{"id":3417,"date":"2025-03-24T08:46:15","date_gmt":"2025-03-23T23:46:15","guid":{"rendered":"https:\/\/dexall.co.jp\/articles\/?p=3417"},"modified":"2025-03-24T08:46:44","modified_gmt":"2025-03-23T23:46:44","slug":"%e3%80%90%e5%ae%8c%e5%85%a8%e3%82%ac%e3%82%a4%e3%83%89%e3%80%91php-json_encode%e3%81%ae%e4%bd%bf%e3%81%84%e6%96%b9%e3%81%a87%e3%81%a4%e3%81%ae%e5%ae%9f%e8%b7%b5%e3%83%86%e3%82%af%e3%83%8b%e3%83%83","status":"publish","type":"post","link":"https:\/\/dexall.co.jp\/articles\/?p=3417","title":{"rendered":"\u3010\u5b8c\u5168\u30ac\u30a4\u30c9\u3011PHP json_encode\u306e\u4f7f\u3044\u65b9\u30687\u3064\u306e\u5b9f\u8df5\u30c6\u30af\u30cb\u30c3\u30af"},"content":{"rendered":"\n<div class=\"toc\"><br \/>\n<b>Warning<\/b>:  Undefined array key \"is_admin\" in <b>\/home\/xs392991\/dexall.co.jp\/public_html\/articles\/wp-content\/themes\/sango-theme\/library\/gutenberg\/dist\/classes\/Toc.php<\/b> on line <b>116<\/b><br \/>\n<br \/>\n<b>Warning<\/b>:  Undefined array key \"is_category_top\" in <b>\/home\/xs392991\/dexall.co.jp\/public_html\/articles\/wp-content\/themes\/sango-theme\/library\/gutenberg\/dist\/classes\/Toc.php<\/b> on line <b>121<\/b><br \/>\n<br \/>\n<b>Warning<\/b>:  Undefined array key \"is_top\" in <b>\/home\/xs392991\/dexall.co.jp\/public_html\/articles\/wp-content\/themes\/sango-theme\/library\/gutenberg\/dist\/classes\/Toc.php<\/b> on line <b>128<\/b><br \/>\n    <div id=\"toc_container\" class=\"sgb-toc--bullets js-smooth-scroll\" data-dialog-title=\"\u76ee\u6b21\">\n      <p class=\"toc_title\">\u76ee\u6b21 <\/p>\n      <ul class=\"toc_list\">  <li class=\"first\">    <a href=\"#i-0\">PHP json_encode\u3068\u306f\uff1f\u57fa\u672c\u304b\u3089\u7406\u89e3\u3059\u308b<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-1\">JSON\u5f62\u5f0f\u306e\u7279\u5fb4\u3068Web\u958b\u767a\u3067\u306e\u91cd\u8981\u6027<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-2\">json_encode\u306e\u5f79\u5272\u3068PHP\u306b\u304a\u3051\u308b\u4f4d\u7f6e\u3065\u3051<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-3\">json_encode\u306e\u57fa\u672c\u69cb\u6587\u3068\u4f7f\u3044\u65b9<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-4\">\u57fa\u672c\u7684\u306a\u66f8\u5f0f\u3068PHP\u30c7\u30fc\u30bf\u578b\u306e\u5909\u63db\u898f\u5247<\/a>      <\/li>      <li>        <a href=\"#i-5\">\u5358\u7d14\u306a\u914d\u5217\u3068\u9023\u60f3\u914d\u5217\u306e\u5909\u63db\u4f8b<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-6\">\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092JSON\u306b\u5909\u63db\u3059\u308b\u65b9\u6cd5<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-7\">json_encode\u306e\u30aa\u30d7\u30b7\u30e7\u30f3\u5f15\u6570\u3092\u5fb9\u5e95\u89e3\u8aac<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-8\">JSON_PRETTY_PRINT\u3067\u8aad\u307f\u3084\u3059\u3044\u51fa\u529b\u3092\u5b9f\u73fe\u3059\u308b<\/a>      <\/li>      <li>        <a href=\"#i-9\">\u65e5\u672c\u8a9e\u6587\u5b57\u5316\u3051\u3092\u9632\u3050JSON_UNESCAPED_UNICODE\u306e\u4f7f\u3044\u65b9<\/a>      <\/li>      <li>        <a href=\"#i-10\">JSON_FORCE_OBJECT\u3067\u914d\u5217\u3092\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u5f62\u5f0f\u306b\u5f37\u5236\u5909\u63db<\/a>      <\/li>      <li>        <a href=\"#i-11\">\u305d\u306e\u4ed6\u306e\u4fbf\u5229\u306a\u30d5\u30e9\u30b0\u30aa\u30d7\u30b7\u30e7\u30f3<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-18\">PHP\u30d0\u30fc\u30b8\u30e7\u30f3\u306b\u3088\u308b\u30d5\u30e9\u30b0\u306e\u9055\u3044<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-19\">json_encode\u3067\u767a\u751f\u3057\u304c\u3061\u306a\u30a8\u30e9\u30fc\u3068\u5bfe\u51e6\u6cd5<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-20\">null\u304c\u8fd4\u3063\u3066\u304f\u308b\u539f\u56e0\u3068\u78ba\u8a8d\u65b9\u6cd5<\/a>      <\/li>      <li>        <a href=\"#i-21\">\u5faa\u74b0\u53c2\u7167\u554f\u984c\u306e\u5bfe\u7b56\u3068\u30c7\u30d0\u30c3\u30b0\u624b\u6cd5<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-22\">\u5927\u304d\u306a\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u3067\u306e\u30e1\u30e2\u30ea\u5236\u9650\u3078\u306e\u5bfe\u5fdc<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-23\">json_encode\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-24\">\u5927\u91cf\u30c7\u30fc\u30bf\u51e6\u7406\u6642\u306e\u52b9\u7387\u7684\u306a\u5b9f\u88c5\u65b9\u6cd5<\/a>      <\/li>      <li>        <a href=\"#i-28\">\u751f\u6210\u3055\u308c\u308bJSON\u30b5\u30a4\u30ba\u306e\u6700\u5c0f\u5316\u30c6\u30af\u30cb\u30c3\u30af<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-32\">\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u6d3b\u7528\u3057\u305f\u51e6\u7406\u901f\u5ea6\u306e\u6539\u5584<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-37\">json_encode\u3092\u4f7f\u3063\u305f7\u3064\u306e\u5b9f\u8df5\u30d1\u30bf\u30fc\u30f3<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-38\">RESTful API\u30ec\u30b9\u30dd\u30f3\u30b9\u306e\u4f5c\u6210<\/a>      <\/li>      <li>        <a href=\"#i-39\">\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3078\u306eJSON\u5f62\u5f0f\u3067\u306e\u4fdd\u5b58<\/a>      <\/li>      <li>        <a href=\"#i-40\">\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u306e\u52d5\u7684\u751f\u6210<\/a>      <\/li>      <li>        <a href=\"#i-41\">\u591a\u8a00\u8a9e\u5bfe\u5fdc\u30b5\u30a4\u30c8\u3067\u306e\u30c7\u30fc\u30bf\u7ba1\u7406<\/a>      <\/li>      <li>        <a href=\"#i-42\">\u30b0\u30e9\u30d5\u63cf\u753b\u30e9\u30a4\u30d6\u30e9\u30ea\u3078\u306e\u30c7\u30fc\u30bf\u63d0\u4f9b<\/a>      <\/li>      <li>        <a href=\"#i-43\">WebSocket\u3092\u4f7f\u3063\u305f\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u30c7\u30fc\u30bf\u9001\u4fe1<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-44\">Ajax\u30ea\u30af\u30a8\u30b9\u30c8\u3078\u306e\u30c7\u30fc\u30bf\u53d7\u3051\u6e21\u3057<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-45\">\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u89b3\u70b9\u304b\u3089\u898b\u305fjson_encode<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-46\">XSS\u653b\u6483\u3092\u9632\u3050\u305f\u3081\u306e\u30c7\u30fc\u30bf\u30b5\u30cb\u30bf\u30a4\u30ba<\/a>      <\/li>      <li>        <a href=\"#i-51\">\u6a5f\u5bc6\u60c5\u5831\u306e\u6271\u3044\u3068\u51fa\u529b\u5236\u5fa1\u306e\u65b9\u6cd5<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-55\">\u5b89\u5168\u306aAPI\u8a2d\u8a08\u306b\u304a\u3051\u308bjson_encode\u306e\u5f79\u5272<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-60\">json_encode\u3068\u4ed6\u306ePHP\u95a2\u6570\u306e\u9023\u643a\u6d3b\u7528\u6cd5<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-61\">json_decode\u3068\u306e\u7d44\u307f\u5408\u308f\u305b\u306b\u3088\u308b\u53cc\u65b9\u5411\u5909\u63db<\/a>      <\/li>      <li>        <a href=\"#i-66\">serialize\/unserialize\u3068\u306e\u9055\u3044\u3068\u4f7f\u3044\u5206\u3051<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-71\">file_put_contents\u3068\u7d44\u307f\u5408\u308f\u305b\u305fJSON\u30d5\u30a1\u30a4\u30eb\u64cd\u4f5c<\/a>      <\/li>    <\/ul>  <\/li>  <li class=\"last\">    <a href=\"#i-75\">\u307e\u3068\u3081\uff1aPHP json_encode\u3092\u6700\u5927\u9650\u306b\u6d3b\u7528\u3059\u308b\u305f\u3081\u306b<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-76\">\u672c\u8a18\u4e8b\u3067\u89e3\u8aac\u3057\u305f\u91cd\u8981\u30dd\u30a4\u30f3\u30c8\u306e\u632f\u308a\u8fd4\u308a<\/a>      <\/li>      <li>        <a href=\"#i-85\">\u5b9f\u52d9\u3067\u5f79\u7acb\u3064json_encode\u6d3b\u7528\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-96\">\u6700\u5f8c\u306b<\/a>      <\/li>    <\/ul>  <\/li><\/ul>\n      <a href=\"#\" class=\"sgb-toc-button js-toc-button\" rel=\"nofollow\" data-open-dialog=\"true\"><i class=\"fa fa-list\"><\/i><span class=\"sgb-toc-button__text\">\u76ee\u6b21\u3078<\/span><\/a>\n    <\/div><\/div><h2 class=\"wp-block-heading\" id=\"i-0\">PHP json_encode\u3068\u306f\uff1f\u57fa\u672c\u304b\u3089\u7406\u89e3\u3059\u308b<\/h2>\n\n\n\n<p>PHP\u3067Web\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u958b\u767a\u3057\u3066\u3044\u308b\u3068\u3001\u3055\u307e\u3056\u307e\u306a\u30c7\u30fc\u30bf\u3092JavaScript\u5074\u306b\u6e21\u3057\u305f\u308a\u3001API\u304b\u3089\u30c7\u30fc\u30bf\u3092\u63d0\u4f9b\u3057\u305f\u308a\u3059\u308b\u5834\u9762\u304c\u591a\u304f\u3042\u308a\u307e\u3059\u3002\u305d\u3093\u306a\u3068\u304d\u3001\u307b\u307c\u9593\u9055\u3044\u306a\u304f\u5229\u7528\u3059\u308b\u3053\u3068\u306b\u306a\u308b\u306e\u304c<code>json_encode()<\/code>\u95a2\u6570\u3067\u3059\u3002\u3053\u306e\u95a2\u6570\u3092\u4f7f\u3044\u3053\u306a\u3059\u3053\u3068\u306f\u3001\u73fe\u4ee3\u306eWeb\u958b\u767a\u306b\u304a\u3044\u3066\u5fc5\u9808\u306e\u30b9\u30ad\u30eb\u3068\u8a00\u3048\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001PHP\u306e<code>json_encode()<\/code>\u95a2\u6570\u306b\u3064\u3044\u3066\u57fa\u672c\u304b\u3089\u5fdc\u7528\u307e\u3067\u5fb9\u5e95\u7684\u306b\u89e3\u8aac\u3057\u307e\u3059\u3002\u521d\u5fc3\u8005\u306e\u65b9\u3067\u3082\u7406\u89e3\u3057\u3084\u3059\u3044\u3088\u3046\u306b\u9806\u3092\u8ffd\u3063\u3066\u8aac\u660e\u3057\u3001\u5b9f\u8df5\u7684\u306a\u4f7f\u7528\u4f8b\u3082\u8c4a\u5bcc\u306b\u7d39\u4ecb\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-1\">JSON\u5f62\u5f0f\u306e\u7279\u5fb4\u3068Web\u958b\u767a\u3067\u306e\u91cd\u8981\u6027<\/h3>\n\n\n\n<p><strong>JSON\u3068\u306f\u4f55\u304b\uff1f<\/strong><\/p>\n\n\n\n<p>JSON\uff08JavaScript Object Notation\uff09\u306f\u3001\u30c7\u30fc\u30bf\u4ea4\u63db\u306e\u305f\u3081\u306e\u30c6\u30ad\u30b9\u30c8\u30d9\u30fc\u30b9\u306e\u8efd\u91cf\u306a\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3067\u3059\u3002Douglas Crockford\u306b\u3088\u3063\u3066\u8a2d\u8a08\u3055\u308c\u30012000\u5e74\u4ee3\u521d\u982d\u304b\u3089\u5e83\u304f\u5229\u7528\u3055\u308c\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p>JSON\u306e\u4e3b\u306a\u7279\u5fb4\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u4eba\u9593\u306b\u3082\u8aad\u307f\u3084\u3059\u304f\u3001\u6a5f\u68b0\u306b\u3082\u89e3\u6790\u3057\u3084\u3059\u3044<\/strong><\/li>\n\n\n\n<li><strong>\u8a00\u8a9e\u306b\u4f9d\u5b58\u3057\u306a\u3044<\/strong>\uff08\u591a\u304f\u306e\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\u3067\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u3066\u3044\u308b\uff09<\/li>\n\n\n\n<li><strong>\u8efd\u91cf\u3067\u9ad8\u901f<\/strong>\uff08XML\u3068\u6bd4\u8f03\u3057\u3066\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u304c\u5c11\u306a\u3044\uff09<\/li>\n\n\n\n<li><strong>\u968e\u5c64\u69cb\u9020\u3092\u8868\u73fe\u3067\u304d\u308b<\/strong>\uff08\u30cd\u30b9\u30c8\u3057\u305f\u914d\u5217\u3084\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u8868\u73fe\u53ef\u80fd\uff09<\/li>\n<\/ul>\n\n\n\n<p>JSON\u30c7\u30fc\u30bf\u306f\u3001\u6b21\u306e\u3088\u3046\u306a\u5f62\u5f0f\u3067\u8868\u73fe\u3055\u308c\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">{\n  \"name\": \"\u5c71\u7530\u592a\u90ce\",\n  \"age\": 30,\n  \"isActive\": true,\n  \"skills\": [\"PHP\", \"JavaScript\", \"SQL\"],\n  \"address\": {\n    \"city\": \"\u6771\u4eac\",\n    \"zipcode\": \"100-0001\"\n  }\n}\n<\/pre>\n\n\n\n<p><strong>Web\u958b\u767a\u306b\u304a\u3051\u308bJSON\u306e\u91cd\u8981\u6027<\/strong><\/p>\n\n\n\n<p>\u73fe\u4ee3\u306eWeb\u958b\u767a\u306b\u304a\u3044\u3066JSON\u304c\u5e83\u304f\u63a1\u7528\u3055\u308c\u3066\u3044\u308b\u7406\u7531\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>API\u901a\u4fe1\u306e\u6a19\u6e96\u5f62\u5f0f<\/strong>\n<ul class=\"wp-block-list\">\n<li>RESTful API\u3084GraphQL API\u306a\u3069\u3001\u307b\u3068\u3093\u3069\u306eWeb API\u3067\u30c7\u30fc\u30bf\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3068\u3057\u3066\u63a1\u7528<\/li>\n\n\n\n<li>\u30af\u30e9\u30a4\u30a2\u30f3\u30c8-\u30b5\u30fc\u30d0\u30fc\u9593\u306e\u52b9\u7387\u7684\u306a\u30c7\u30fc\u30bf\u4ea4\u63db\u3092\u5b9f\u73fe<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>JavaScript\u9023\u643a\u306e\u5bb9\u6613\u3055<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u30d6\u30e9\u30a6\u30b6\u306eJavaScript\u304b\u3089\u306e\u6271\u3044\u304c\u975e\u5e38\u306b\u7c21\u5358\uff08<code>JSON.parse()<\/code>\u3067\u7c21\u5358\u306b\u5909\u63db\u53ef\u80fd\uff09<\/li>\n\n\n\n<li>Ajax\u30ea\u30af\u30a8\u30b9\u30c8\u306e\u5fdc\u7b54\u5f62\u5f0f\u3068\u3057\u3066\u6700\u9069<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>NoSQL\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3068\u306e\u89aa\u548c\u6027<\/strong>\n<ul class=\"wp-block-list\">\n<li>MongoDB\u3001CouchDB\u306a\u3069\u306e\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u6307\u5411\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3067\u6a19\u6e96\u7684\u306b\u5229\u7528<\/li>\n\n\n\n<li>PostgreSQL\u3001MySQL\u306a\u3069\u306e\u30ea\u30ec\u30fc\u30b7\u30e7\u30ca\u30eb\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3067\u3082JSON\u578b\u304c\u30b5\u30dd\u30fc\u30c8<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u3068\u3057\u3066\u306e\u5229\u7528<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u591a\u304f\u306e\u30c4\u30fc\u30eb\u3084\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u304c\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u3068\u3057\u3066JSON\u3092\u63a1\u7528<\/li>\n\n\n\n<li>\u4eba\u9593\u306b\u3088\u308b\u7de8\u96c6\u3082\u5bb9\u6613\u306a\u305f\u3081\u3001\u958b\u767a\u4f53\u9a13\u304c\u5411\u4e0a<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-2\">json_encode\u306e\u5f79\u5272\u3068PHP\u306b\u304a\u3051\u308b\u4f4d\u7f6e\u3065\u3051<\/h3>\n\n\n\n<p><strong>json_encode\u306e\u57fa\u672c\u7684\u306a\u5f79\u5272<\/strong><\/p>\n\n\n\n<p><code>json_encode()<\/code>\u95a2\u6570\u306f\u3001PHP\u914d\u5217\u3084\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092JSON\u5f62\u5f0f\u306e\u6587\u5b57\u5217\u306b\u5909\u63db\u3059\u308b\u5f79\u5272\u3092\u62c5\u3063\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001PHP\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u6271\u3046\u30c7\u30fc\u30bf\u3092\u5bb9\u6613\u306bJavaScript\u3084\u4ed6\u306e\u30b7\u30b9\u30c6\u30e0\u306b\u6e21\u3059\u3053\u3068\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u57fa\u672c\u7684\u306a\u69cb\u6587\u306f\u6b21\u306e\u901a\u308a\u3067\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">string json_encode(mixed $value, int $flags = 0, int $depth = 512)\n<\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>$value<\/code>\uff1aJSON\u5f62\u5f0f\u306b\u5909\u63db\u3057\u305f\u3044PHP\u306e\u5024\uff08\u914d\u5217\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306a\u3069\uff09<\/li>\n\n\n\n<li><code>$flags<\/code>\uff1a\u30a8\u30f3\u30b3\u30fc\u30c9\u65b9\u6cd5\u3092\u5236\u5fa1\u3059\u308b\u30aa\u30d7\u30b7\u30e7\u30f3\u30d5\u30e9\u30b0<\/li>\n\n\n\n<li><code>$depth<\/code>\uff1aJSON\u30a8\u30f3\u30b3\u30fc\u30c9\u3059\u308b\u6700\u5927\u306e\u518d\u5e30\u6df1\u5ea6\uff08\u30c7\u30d5\u30a9\u30eb\u30c8\uff1a512\uff09<\/li>\n<\/ul>\n\n\n\n<p><strong>PHP\u30a8\u30b3\u30b7\u30b9\u30c6\u30e0\u306b\u304a\u3051\u308b\u4f4d\u7f6e\u3065\u3051<\/strong><\/p>\n\n\n\n<p><code>json_encode()<\/code>\u306f\u3001PHP 5.2.0\u4ee5\u964d\u306b\u6a19\u6e96\u3067\u7d44\u307f\u8fbc\u307e\u308c\u305f\u95a2\u6570\u3067\u3059\u3002PHP\u6a19\u6e96\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u4e00\u90e8\u3068\u3057\u3066\u63d0\u4f9b\u3055\u308c\u3066\u3044\u308b\u305f\u3081\u3001\u8ffd\u52a0\u306e\u30a8\u30af\u30b9\u30c6\u30f3\u30b7\u30e7\u30f3\u3084\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3059\u308b\u3053\u3068\u306a\u304f\u5229\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>PHP\u3067\u30c7\u30fc\u30bf\u3092\u30b7\u30ea\u30a2\u30e9\u30a4\u30ba\u3059\u308b\u65b9\u6cd5\u3068\u3057\u3066\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u9078\u629e\u80a2\u304c\u3042\u308a\u307e\u3059\uff1a<\/p>\n\n\n<div id=\"id-a0f421ce-99ca-4ff3-8435-e9ed20dcd72b\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u65b9\u6cd5<\/th><th>\u7528\u9014<\/th><th>\u7279\u5fb4<\/th><\/tr><\/thead><tbody><tr><td><code>json_encode()<\/code><\/td><td>\u6c4e\u7528\u7684\u306a\u30c7\u30fc\u30bf\u4ea4\u63db<\/td><td>\u4ed6\u8a00\u8a9e\u30fb\u30b7\u30b9\u30c6\u30e0\u3068\u306e\u4e92\u63db\u6027\u304c\u9ad8\u3044<\/td><\/tr><tr><td><code>serialize()<\/code><\/td><td>PHP\u9593\u3067\u306e\u30c7\u30fc\u30bf\u4fdd\u5b58<\/td><td>PHP\u306e\u5185\u90e8\u8868\u73fe\u3092\u4fdd\u6301\u3067\u304d\u308b\u304c\u4ed6\u8a00\u8a9e\u3068\u306e\u4e92\u63db\u6027\u306f\u4f4e\u3044<\/td><\/tr><tr><td><code>var_export()<\/code><\/td><td>\u30c7\u30d0\u30c3\u30b0\u3084PHP\u30b3\u30fc\u30c9\u751f\u6210<\/td><td>\u51fa\u529b\u7d50\u679c\u304c\u5b9f\u884c\u53ef\u80fd\u306aPHP\u30b3\u30fc\u30c9<\/td><\/tr><tr><td><code>print_r()<\/code>\/<code>var_dump()<\/code><\/td><td>\u30c7\u30d0\u30c3\u30b0\u30fb\u958b\u767a\u7528<\/td><td>\u4eba\u9593\u304c\u8aad\u307f\u3084\u3059\u3044\u5f62\u5f0f\u3060\u304c\u6a5f\u68b0\u7684\u306a\u89e3\u6790\u306b\u306f\u4e0d\u5411\u304d<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<p>\u591a\u304f\u306ePHP\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\uff08Laravel\u3001Symfony\u3001CakePHP\u306a\u3069\uff09\u3067\u306f\u3001JSON\u5f62\u5f0f\u306eAPI\u30ec\u30b9\u30dd\u30f3\u30b9\u3092\u4f5c\u6210\u3059\u308b\u305f\u3081\u306e\u30d8\u30eb\u30d1\u30fc\u6a5f\u80fd\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u5185\u90e8\u3067<code>json_encode()<\/code>\u3092\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>PHP\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u958b\u767a\u306b\u304a\u3051\u308b\u4e00\u822c\u7684\u306a\u5229\u7528\u30b7\u30fc\u30f3<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>API\u958b\u767a<\/strong>\uff1a\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u30c7\u30fc\u30bf\u3092\u63d0\u4f9b<\/li>\n\n\n\n<li><strong>\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\u9023\u643a<\/strong>\uff1aJavaScript\u306b\u521d\u671f\u30c7\u30fc\u30bf\u3092\u6e21\u3059<\/li>\n\n\n\n<li><strong>AJAX\u51e6\u7406<\/strong>\uff1a\u975e\u540c\u671f\u30ea\u30af\u30a8\u30b9\u30c8\u3078\u306e\u30ec\u30b9\u30dd\u30f3\u30b9<\/li>\n\n\n\n<li><strong>\u30c7\u30fc\u30bf\u4fdd\u5b58<\/strong>\uff1a\u8a2d\u5b9a\u60c5\u5831\u306e\u30d5\u30a1\u30a4\u30eb\u4fdd\u5b58<\/li>\n\n\n\n<li><strong>\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u64cd\u4f5c<\/strong>\uff1aJSON\u578b\u30ab\u30e9\u30e0\u3078\u306e\u30c7\u30fc\u30bf\u683c\u7d0d<\/li>\n<\/ul>\n\n\n\n<p>\u4ee5\u4e0a\u306e\u3088\u3046\u306b\u3001<code>json_encode()<\/code>\u306fPHP\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u958b\u767a\u306b\u304a\u3044\u3066\u5fc5\u9808\u306e\u95a2\u6570\u3067\u3042\u308a\u3001Web\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3084API\u3092\u958b\u767a\u3059\u308b\u969b\u306b\u306f\u983b\u7e41\u306b\u4f7f\u7528\u3059\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u5b9f\u969b\u306e\u4f7f\u7528\u65b9\u6cd5\u3068\u69cb\u6587\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-3\">json_encode\u306e\u57fa\u672c\u69cb\u6587\u3068\u4f7f\u3044\u65b9<\/h2>\n\n\n\n<p>PHP\u3067JSON\u5f62\u5f0f\u306e\u30c7\u30fc\u30bf\u3092\u6271\u3046\u969b\u306b\u6700\u3082\u57fa\u672c\u3068\u306a\u308b\u306e\u304c<code>json_encode()<\/code>\u95a2\u6570\u3067\u3059\u3002\u3053\u306e\u95a2\u6570\u3092\u4f7f\u3044\u3053\u306a\u3059\u3053\u3068\u3067\u3001PHP\u306e\u30c7\u30fc\u30bf\u69cb\u9020\u3092JavaScript\u3084API\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306a\u3069\u3001\u5916\u90e8\u30b7\u30b9\u30c6\u30e0\u3067\u6271\u3044\u3084\u3059\u3044JSON\u5f62\u5f0f\u306b\u5909\u63db\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-4\">\u57fa\u672c\u7684\u306a\u66f8\u5f0f\u3068PHP\u30c7\u30fc\u30bf\u578b\u306e\u5909\u63db\u898f\u5247<\/h3>\n\n\n\n<p><strong>\u57fa\u672c\u69cb\u6587<\/strong><\/p>\n\n\n\n<p><code>json_encode()<\/code>\u95a2\u6570\u306e\u57fa\u672c\u69cb\u6587\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">string json_encode(mixed $value, int $flags = 0, int $depth = 512)\n<\/pre>\n\n\n\n<p>\u3053\u306e\u95a2\u6570\u306f3\u3064\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u53d7\u3051\u53d6\u308a\u307e\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>$value<\/strong>\uff1aJSON\u5f62\u5f0f\u306b\u5909\u63db\u3057\u305f\u3044PHP\u306e\u5024\uff08\u914d\u5217\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3001\u30b9\u30ab\u30e9\u30fc\u5024\u306a\u3069\uff09<\/li>\n\n\n\n<li><strong>$flags<\/strong>\uff1a\u30a8\u30f3\u30b3\u30fc\u30c9\u306e\u52d5\u4f5c\u3092\u5909\u66f4\u3059\u308b\u30aa\u30d7\u30b7\u30e7\u30f3\u30d5\u30e9\u30b0\uff08\u5f8c\u8ff0\uff09<\/li>\n\n\n\n<li><strong>$depth<\/strong>\uff1a\u518d\u5e30\u7684\u306b\u30a8\u30f3\u30b3\u30fc\u30c9\u3059\u308b\u6700\u5927\u306e\u6df1\u3055\uff08\u30c7\u30d5\u30a9\u30eb\u30c8\uff1a512\uff09<\/li>\n<\/ul>\n\n\n\n<p>\u623b\u308a\u5024\u306f\u3001\u6210\u529f\u3057\u305f\u5834\u5408\u306fJSON\u5f62\u5f0f\u306e\u6587\u5b57\u5217\u3001\u5931\u6557\u3057\u305f\u5834\u5408\u306f<code>false<\/code>\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>PHP\u30c7\u30fc\u30bf\u578b\u3068JSON\u306e\u5bfe\u5fdc\u95a2\u4fc2<\/strong><\/p>\n\n\n\n<p>PHP\u306e\u5404\u30c7\u30fc\u30bf\u578b\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306bJSON\u5f62\u5f0f\u306b\u5909\u63db\u3055\u308c\u307e\u3059\uff1a<\/p>\n\n\n<div id=\"id-da5b8743-edf5-4e39-bc09-0806feb244a9\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>PHP\u30c7\u30fc\u30bf\u578b<\/th><th>JSON\u5f62\u5f0f<\/th><th>\u4f8b<\/th><\/tr><\/thead><tbody><tr><td>NULL<\/td><td>null<\/td><td><code>json_encode(null); \/\/ \"null\"<\/code><\/td><\/tr><tr><td>boolean<\/td><td>boolean<\/td><td><code>json_encode(true); \/\/ \"true\"<\/code><\/td><\/tr><tr><td>integer<\/td><td>number<\/td><td><code>json_encode(42); \/\/ \"42\"<\/code><\/td><\/tr><tr><td>float\/double<\/td><td>number<\/td><td><code>json_encode(3.14); \/\/ \"3.14\"<\/code><\/td><\/tr><tr><td>string<\/td><td>string<\/td><td><code>json_encode(\"Hello\"); \/\/ \"\\\"Hello\\\"\"<\/code><\/td><\/tr><tr><td>\u7d22\u5f15\u914d\u5217<\/td><td>array<\/td><td><code>json_encode([1, 2, 3]); \/\/ \"[1,2,3]\"<\/code><\/td><\/tr><tr><td>\u9023\u60f3\u914d\u5217<\/td><td>object<\/td><td><code>json_encode([\"name\" =&gt; \"Taro\"]); \/\/ \"{\"name\":\"Taro\"}\"<\/code><\/td><\/tr><tr><td>object<\/td><td>object<\/td><td><code>json_encode(new stdClass()); \/\/ \"{}\"<\/code><\/td><\/tr><tr><td>resource<\/td><td>null<\/td><td><code>json_encode(fopen(\"file.txt\", \"r\")); \/\/ \"null\"<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<p>\u7279\u306b\u6ce8\u610f\u3059\u3079\u304d\u70b9\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>PHP\u306e<strong>\u30ea\u30bd\u30fc\u30b9\u578b<\/strong>\u306fJSON\u306b\u30a8\u30f3\u30b3\u30fc\u30c9\u3067\u304d\u305a\u3001<code>null<\/code>\u306b\u5909\u63db\u3055\u308c\u307e\u3059<\/li>\n\n\n\n<li>\u5024\u304c<strong>INF<\/strong>\u307e\u305f\u306f<strong>NAN<\/strong>\u306e\u5834\u5408\u3001JSON\u4ed5\u69d8\u3067\u306f\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u3066\u3044\u306a\u3044\u305f\u3081\u3001<code>0<\/code>\u306b\u5909\u63db\u3055\u308c\u307e\u3059<\/li>\n\n\n\n<li>UTF-8\u306b\u5909\u63db\u3067\u304d\u306a\u3044\u6587\u5b57\u306f\u3001\u30c7\u30d5\u30a9\u30eb\u30c8\u3067Unicode\u30a8\u30b9\u30b1\u30fc\u30d7\u30b7\u30fc\u30b1\u30f3\u30b9\u306b\u5909\u63db\u3055\u308c\u307e\u3059<\/li>\n<\/ul>\n\n\n\n<p>\u4ee5\u4e0b\u306f\u5b9f\u969b\u306e\u5909\u63db\u4f8b\u3067\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30b9\u30ab\u30e9\u30fc\u5024\u306e\u5909\u63db\necho json_encode(null) . \"\\n\";     \/\/ null\necho json_encode(true) . \"\\n\";     \/\/ true\necho json_encode(false) . \"\\n\";    \/\/ false\necho json_encode(123) . \"\\n\";      \/\/ 123\necho json_encode(3.14) . \"\\n\";     \/\/ 3.14\necho json_encode(\"\u3053\u3093\u306b\u3061\u306f\") . \"\\n\"; \/\/ \"\\u3053\\u3093\\u306b\\u3061\\u306f\"\n\n\/\/ INF\u3084NAN\u306e\u6271\u3044\necho json_encode(INF) . \"\\n\";      \/\/ 0\uff08JSON\u4ed5\u69d8\u3067\u306f\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u3066\u3044\u306a\u3044\uff09\necho json_encode(NAN) . \"\\n\";      \/\/ 0\uff08JSON\u4ed5\u69d8\u3067\u306f\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u3066\u3044\u306a\u3044\uff09\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-5\">\u5358\u7d14\u306a\u914d\u5217\u3068\u9023\u60f3\u914d\u5217\u306e\u5909\u63db\u4f8b<\/h3>\n\n\n\n<p>PHP\u306e\u914d\u5217\u306f\u3001\u305d\u306e\u69cb\u9020\u306b\u5fdc\u3058\u3066JSON\u306e\u914d\u5217\u307e\u305f\u306f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u5909\u63db\u3055\u308c\u307e\u3059\u3002\u30ad\u30fc\u306e\u7a2e\u985e\u306b\u3088\u3063\u3066\u5909\u63db\u7d50\u679c\u304c\u7570\u306a\u308b\u305f\u3081\u3001\u7406\u89e3\u3057\u3066\u304a\u304f\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<p><strong>\u7d22\u5f15\u914d\u5217\uff08\u9023\u7d9a\u3057\u305f\u6574\u6570\u30ad\u30fc\uff09<\/strong><\/p>\n\n\n\n<p>\u9023\u7d9a\u3057\u305f\u6574\u6570\u30ad\u30fc\u3092\u6301\u3064\u914d\u5217\u306f\u3001JSON\u306e\u914d\u5217\uff08<code>[]<\/code>\uff09\u306b\u5909\u63db\u3055\u308c\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u5358\u7d14\u306a\u7d22\u5f15\u914d\u5217\n$colors = ['red', 'green', 'blue'];\necho json_encode($colors);\n\/\/ \u51fa\u529b: [\"red\",\"green\",\"blue\"]\n\n\/\/ 0\u304b\u3089\u59cb\u307e\u308b\u9023\u7d9a\u3057\u305f\u6574\u6570\u30ad\u30fc\u306e\u914d\u5217\n$numbers = [0 =&gt; 'zero', 1 =&gt; 'one', 2 =&gt; 'two'];\necho json_encode($numbers);\n\/\/ \u51fa\u529b: [\"zero\",\"one\",\"two\"]\n<\/pre>\n\n\n\n<p><strong>\u9023\u60f3\u914d\u5217\uff08\u6587\u5b57\u5217\u30ad\u30fc\uff09<\/strong><\/p>\n\n\n\n<p>\u6587\u5b57\u5217\u30ad\u30fc\u3092\u6301\u3064\u9023\u60f3\u914d\u5217\u306f\u3001JSON\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\uff08<code>{}<\/code>\uff09\u306b\u5909\u63db\u3055\u308c\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u57fa\u672c\u7684\u306a\u9023\u60f3\u914d\u5217\n$person = [\n    'name' =&gt; '\u5c71\u7530\u592a\u90ce',\n    'age' =&gt; 30,\n    'isStudent' =&gt; false\n];\necho json_encode($person);\n\/\/ \u51fa\u529b: {\"name\":\"\\u5c71\\u7530\\u592a\\u90ce\",\"age\":30,\"isStudent\":false}\n\n\/\/ \u30aa\u30d7\u30b7\u30e7\u30f3\u30d5\u30e9\u30b0\u3092\u4f7f\u7528\u3057\u3066\u65e5\u672c\u8a9e\u3092\u305d\u306e\u307e\u307e\u51fa\u529b\necho json_encode($person, JSON_UNESCAPED_UNICODE);\n\/\/ \u51fa\u529b: {\"name\":\"\u5c71\u7530\u592a\u90ce\",\"age\":30,\"isStudent\":false}\n<\/pre>\n\n\n\n<p><strong>\u8907\u5408\u30c7\u30fc\u30bf\u69cb\u9020<\/strong><\/p>\n\n\n\n<p>\u3088\u308a\u8907\u96d1\u306a\u30cd\u30b9\u30c8\u3057\u305f\u914d\u5217\u3082JSON\u5f62\u5f0f\u306b\u5909\u63db\u3067\u304d\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u591a\u6b21\u5143\u914d\u5217\n$data = [\n    'users' =&gt; [\n        ['id' =&gt; 1, 'name' =&gt; '\u4f50\u85e4'],\n        ['id' =&gt; 2, 'name' =&gt; '\u9234\u6728']\n    ],\n    'count' =&gt; 2,\n    'status' =&gt; 'active'\n];\n\n\/\/ \u8aad\u307f\u3084\u3059\u3044JSON\u5f62\u5f0f\u3067\u51fa\u529b\necho json_encode($data, JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE);\n\/* \u51fa\u529b:\n{\n    \"users\": [\n        {\n            \"id\": 1,\n            \"name\": \"\u4f50\u85e4\"\n        },\n        {\n            \"id\": 2,\n            \"name\": \"\u9234\u6728\"\n        }\n    ],\n    \"count\": 2,\n    \"status\": \"active\"\n}\n*\/\n<\/pre>\n\n\n\n<p><strong>\u7279\u6b8a\u306a\u30b1\u30fc\u30b9\uff1a\u4e0d\u9023\u7d9a\u30ad\u30fc\u3068\u6df7\u5408\u30ad\u30fc<\/strong><\/p>\n\n\n\n<p>\u4e0d\u9023\u7d9a\u306a\u30ad\u30fc\u3092\u6301\u3064\u914d\u5217\u3084\u3001\u6570\u5024\u3068\u6587\u5b57\u5217\u304c\u6df7\u5728\u3057\u305f\u30ad\u30fc\u3092\u6301\u3064\u914d\u5217\u3067\u306f\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u4e0d\u9023\u7d9a\u30ad\u30fc\u306e\u914d\u5217\n$discontinuous = [];\n$discontinuous[0] = 'apple';\n$discontinuous[2] = 'orange';\necho json_encode($discontinuous);\n\/\/ \u51fa\u529b: [\"apple\",null,\"orange\"] (\u6b20\u3051\u3066\u3044\u308b\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306fnull\u3067\u57cb\u3081\u3089\u308c\u308b)\n\n\/\/ \u6570\u5024\u3068\u6587\u5b57\u5217\u304c\u6df7\u5728\u3057\u305f\u30ad\u30fc\n$mixed = [\n    0 =&gt; 'zero',\n    '1' =&gt; 'one', \n    'two' =&gt; 2\n];\necho json_encode($mixed);\n\/\/ \u51fa\u529b: {\"0\":\"zero\",\"1\":\"one\",\"two\":2} (\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u5909\u63db\u3055\u308c\u308b)\n<\/pre>\n\n\n\n<p>\u30ad\u30fc\u304c\u9023\u7d9a\u3057\u305f\u6574\u6570\u3067\u306a\u3044\u5834\u5408\u306f\u3001\u30a8\u30f3\u30b3\u30fc\u30c9\u7d50\u679c\u304c\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u306a\u308b\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-6\">\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092JSON\u306b\u5909\u63db\u3059\u308b\u65b9\u6cd5<\/h3>\n\n\n\n<p>PHP\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3082JSON\u5f62\u5f0f\u306b\u5909\u63db\u3067\u304d\u307e\u3059\u304c\u3001\u3044\u304f\u3064\u304b\u306e\u7279\u5225\u306a\u52d5\u4f5c\u898f\u5247\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>\u6a19\u6e96\u30af\u30e9\u30b9\uff08stdClass\uff09<\/strong><\/p>\n\n\n\n<p>\u6700\u3082\u30b7\u30f3\u30d7\u30eb\u306a\u306e\u306f<code>stdClass<\/code>\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u3001\u305d\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u306f\u76f4\u63a5JSON\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u306b\u306a\u308a\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ stdClass\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u5909\u63db\n$obj = new stdClass();\n$obj-&gt;name = '\u9234\u6728\u4e00\u90ce';\n$obj-&gt;age = 25;\necho json_encode($obj, JSON_UNESCAPED_UNICODE);\n\/\/ \u51fa\u529b: {\"name\":\"\u9234\u6728\u4e00\u90ce\",\"age\":25}\n<\/pre>\n\n\n\n<p><strong>\u30ab\u30b9\u30bf\u30e0\u30af\u30e9\u30b9<\/strong><\/p>\n\n\n\n<p>\u30ab\u30b9\u30bf\u30e0\u30af\u30e9\u30b9\u3092JSON\u5909\u63db\u3059\u308b\u5834\u5408\u3001<strong>\u30d1\u30d6\u30ea\u30c3\u30af\u30d7\u30ed\u30d1\u30c6\u30a3\u306e\u307f<\/strong>\u304c\u30a8\u30f3\u30b3\u30fc\u30c9\u3055\u308c\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30ab\u30b9\u30bf\u30e0\u30af\u30e9\u30b9\uff08\u30d1\u30d6\u30ea\u30c3\u30af\u30d7\u30ed\u30d1\u30c6\u30a3\uff09\nclass Person {\n    public $name;\n    public $age;\n    private $secret;\n    \n    public function __construct($name, $age, $secret) {\n        $this-&gt;name = $name;\n        $this-&gt;age = $age;\n        $this-&gt;secret = $secret;\n    }\n}\n\n$person = new Person('\u4f50\u85e4\u82b1\u5b50', 28, '\u30d1\u30b9\u30ef\u30fc\u30c9');\necho json_encode($person, JSON_UNESCAPED_UNICODE);\n\/\/ \u51fa\u529b: {\"name\":\"\u4f50\u85e4\u82b1\u5b50\",\"age\":28} (\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u30d7\u30ed\u30d1\u30c6\u30a3\u306f\u542b\u307e\u308c\u306a\u3044)\n<\/pre>\n\n\n\n<p><strong>JsonSerializable\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u5b9f\u88c5<\/strong><\/p>\n\n\n\n<p>\u3088\u308a\u9ad8\u5ea6\u306a\u5236\u5fa1\u304c\u5fc5\u8981\u306a\u5834\u5408\u306f\u3001<code>JsonSerializable<\/code>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u5b9f\u88c5\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ JsonSerializable\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u5b9f\u88c5\nclass Product implements JsonSerializable {\n    private $id;\n    private $name;\n    private $price;\n    \n    public function __construct($id, $name, $price) {\n        $this-&gt;id = $id;\n        $this-&gt;name = $name;\n        $this-&gt;price = $price;\n    }\n    \n    public function jsonSerialize() {\n        return [\n            'product_id' =&gt; $this-&gt;id,\n            'product_name' =&gt; $this-&gt;name,\n            'price_jpy' =&gt; $this-&gt;price,\n            'created_at' =&gt; date('Y-m-d H:i:s')\n        ];\n    }\n}\n\n$product = new Product(101, '\u30ce\u30fc\u30c8PC', 89800);\necho json_encode($product, JSON_UNESCAPED_UNICODE);\n\/\/ \u51fa\u529b: {\"product_id\":101,\"product_name\":\"\u30ce\u30fc\u30c8PC\",\"price_jpy\":89800,\"created_at\":\"2023-01-01 12:34:56\"}\n<\/pre>\n\n\n\n<p><code>JsonSerializable<\/code>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u5b9f\u88c5\u3059\u308b\u3053\u3068\u3067\u3001\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u542b\u3081\u305f\u308a\u3001\u30d7\u30ed\u30d1\u30c6\u30a3\u540d\u3092\u5909\u66f4\u3057\u305f\u308a\u3001\u52d5\u7684\u306b\u5024\u3092\u8ffd\u52a0\u3057\u305f\u308a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>__toString\u30e1\u30bd\u30c3\u30c9\u306e\u5f71\u97ff<\/strong><\/p>\n\n\n\n<p>\u30af\u30e9\u30b9\u304c<code>__toString()<\/code>\u30e1\u30bd\u30c3\u30c9\u3092\u5b9f\u88c5\u3057\u3066\u3044\u308b\u5834\u5408\u3001\u305d\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306f\u6587\u5b57\u5217\u3068\u3057\u3066\u30a8\u30f3\u30b3\u30fc\u30c9\u3055\u308c\u308b\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ __toString\u30e1\u30bd\u30c3\u30c9\u306e\u5b9f\u88c5\nclass Message {\n    private $content;\n    \n    public function __construct($content) {\n        $this-&gt;content = $content;\n    }\n    \n    public function __toString() {\n        return $this-&gt;content;\n    }\n}\n\n$msg = new Message('Hello World');\necho json_encode($msg);\n\/\/ \u51fa\u529b: \"Hello World\" (\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u306f\u306a\u304f\u6587\u5b57\u5217\u306b\u306a\u308b)\n<\/pre>\n\n\n\n<p>json_encode\u95a2\u6570\u306f\u69d8\u3005\u306a\u7528\u9014\u306b\u4f7f\u3048\u308b\u975e\u5e38\u306b\u4fbf\u5229\u306a\u95a2\u6570\u3067\u3059\u3002PHP\u958b\u767a\u306b\u304a\u3044\u3066JSON\u30c7\u30fc\u30bf\u3092\u6271\u3046\u969b\u306f\u3001\u3053\u3053\u3067\u7d39\u4ecb\u3057\u305f\u57fa\u672c\u7684\u306a\u5909\u63db\u30eb\u30fc\u30eb\u3092\u3057\u3063\u304b\u308a\u7406\u89e3\u3057\u3066\u304a\u304f\u3053\u3068\u3067\u3001\u52b9\u7387\u7684\u306a\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u3053\u3068\u304c\u3067\u304d\u308b\u3067\u3057\u3087\u3046\u3002\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u3055\u3089\u306b\u9ad8\u5ea6\u306a\u4f7f\u3044\u65b9\u3068\u3057\u3066\u3001json_encode\u306e\u30aa\u30d7\u30b7\u30e7\u30f3\u5f15\u6570\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u898b\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-7\">json_encode\u306e\u30aa\u30d7\u30b7\u30e7\u30f3\u5f15\u6570\u3092\u5fb9\u5e95\u89e3\u8aac<\/h2>\n\n\n\n<p><code>json_encode()<\/code>\u95a2\u6570\u306e\u771f\u4fa1\u306f\u3001\u305d\u306e\u67d4\u8edf\u6027\u306b\u3042\u308a\u307e\u3059\u3002\u7b2c2\u5f15\u6570\u3068\u3057\u3066\u6e21\u3059\u30aa\u30d7\u30b7\u30e7\u30f3\u30d5\u30e9\u30b0\u3092\u4f7f\u3046\u3053\u3068\u3067\u3001\u51fa\u529b\u3055\u308c\u308bJSON\u306e\u5f62\u5f0f\u3084\u52d5\u4f5c\u3092\u7d30\u304b\u304f\u5236\u5fa1\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u7406\u89e3\u3057\u3001\u9069\u5207\u306b\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u52b9\u7387\u7684\u304b\u3064\u76ee\u7684\u306b\u5408\u3063\u305fJSON\u51e6\u7406\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-8\">JSON_PRETTY_PRINT\u3067\u8aad\u307f\u3084\u3059\u3044\u51fa\u529b\u3092\u5b9f\u73fe\u3059\u308b<\/h3>\n\n\n\n<p><strong>JSON_PRETTY_PRINT\u3068\u306f<\/strong><\/p>\n\n\n\n<p><code>JSON_PRETTY_PRINT<\/code>\u306f\u3001\u751f\u6210\u3055\u308c\u308bJSON\u6587\u5b57\u5217\u306b\u9069\u5207\u306a\u7a7a\u767d\u3068\u6539\u884c\u3092\u8ffd\u52a0\u3057\u3066\u3001\u4eba\u9593\u304c\u8aad\u307f\u3084\u3059\u3044\u5f62\u5f0f\u306b\u3059\u308b\u30d5\u30e9\u30b0\u3067\u3059\u3002\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u306f\u3001<code>json_encode()<\/code>\u306f\u4f59\u5206\u306a\u7a7a\u767d\u3092\u542b\u307e\u306a\u3044\u30b3\u30f3\u30d1\u30af\u30c8\u306aJSON\u3092\u751f\u6210\u3057\u307e\u3059\u304c\u3001\u3053\u306e\u30d5\u30e9\u30b0\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u968e\u5c64\u69cb\u9020\u3092\u8996\u899a\u7684\u306b\u7406\u89e3\u3057\u3084\u3059\u3044\u5f62\u5f0f\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>\u4f7f\u7528\u4f8b<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u591a\u968e\u5c64\u306e\u914d\u5217\n$data = [\n    'name' =&gt; '\u5c71\u7530\u592a\u90ce',\n    'age' =&gt; 30,\n    'hobbies' =&gt; ['\u8aad\u66f8', '\u6620\u753b\u9451\u8cde', '\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0'],\n    'address' =&gt; [\n        'postal' =&gt; '123-4567',\n        'prefecture' =&gt; '\u6771\u4eac\u90fd'\n    ]\n];\n\n\/\/ \u901a\u5e38\u306e\u51fa\u529b\uff08\u30b3\u30f3\u30d1\u30af\u30c8\uff09\necho \"\u3010\u901a\u5e38\u306e\u51fa\u529b\u3011\\n\";\necho json_encode($data, JSON_UNESCAPED_UNICODE);\n\n\/\/ JSON_PRETTY_PRINT\u3092\u4f7f\u7528\u3057\u305f\u51fa\u529b\necho \"\\n\\n\u3010JSON_PRETTY_PRINT\u3092\u4f7f\u7528\u3057\u305f\u51fa\u529b\u3011\\n\";\necho json_encode($data, JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE);\n<\/pre>\n\n\n\n<p><strong>\u51fa\u529b\u7d50\u679c<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\u3010\u901a\u5e38\u306e\u51fa\u529b\u3011\n{\"name\":\"\u5c71\u7530\u592a\u90ce\",\"age\":30,\"hobbies\":[\"\u8aad\u66f8\",\"\u6620\u753b\u9451\u8cde\",\"\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\"],\"address\":{\"postal\":\"123-4567\",\"prefecture\":\"\u6771\u4eac\u90fd\"}}\n\n\u3010JSON_PRETTY_PRINT\u3092\u4f7f\u7528\u3057\u305f\u51fa\u529b\u3011\n{\n    \"name\": \"\u5c71\u7530\u592a\u90ce\",\n    \"age\": 30,\n    \"hobbies\": [\n        \"\u8aad\u66f8\",\n        \"\u6620\u753b\u9451\u8cde\",\n        \"\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\"\n    ],\n    \"address\": {\n        \"postal\": \"123-4567\",\n        \"prefecture\": \"\u6771\u4eac\u90fd\"\n    }\n}\n<\/pre>\n\n\n\n<p><strong>\u6d3b\u7528\u30b7\u30fc\u30f3<\/strong><\/p>\n\n\n\n<p><code>JSON_PRETTY_PRINT<\/code>\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30b7\u30fc\u30f3\u3067\u7279\u306b\u4fbf\u5229\u3067\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30c7\u30fc\u30bf\u69cb\u9020\u306e\u30c7\u30d0\u30c3\u30b0\u4e2d\u306b\u5185\u5bb9\u3092\u78ba\u8a8d\u3059\u308b\u5834\u5408<\/li>\n\n\n\n<li>\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u306a\u3069\u3001\u4eba\u9593\u304c\u76f4\u63a5\u7de8\u96c6\u3059\u308b\u53ef\u80fd\u6027\u306e\u3042\u308bJSON\u3092\u4f5c\u6210\u3059\u308b\u5834\u5408<\/li>\n\n\n\n<li>\u30ed\u30b0\u30d5\u30a1\u30a4\u30eb\u306bJSON\u30c7\u30fc\u30bf\u3092\u4fdd\u5b58\u3059\u308b\u5834\u5408<\/li>\n\n\n\n<li>API\u958b\u767a\u4e2d\u306e\u30ec\u30b9\u30dd\u30f3\u30b9\u5185\u5bb9\u78ba\u8a8d\u6642<\/li>\n<\/ul>\n\n\n\n<p>\u305f\u3060\u3057\u3001<code>JSON_PRETTY_PRINT<\/code>\u3092\u4f7f\u7528\u3059\u308b\u3068\u51fa\u529b\u30b5\u30a4\u30ba\u304c\u5927\u304d\u304f\u306a\u308b\u305f\u3081\u3001\u5b9f\u969b\u306e\u30d7\u30ed\u30c0\u30af\u30b7\u30e7\u30f3\u74b0\u5883\u3067\u306f\u30c7\u30d0\u30c3\u30b0\u76ee\u7684\u4ee5\u5916\u3067\u306f\u4f7f\u7528\u3057\u306a\u3044\u3053\u3068\u3092\u304a\u52e7\u3081\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-9\">\u65e5\u672c\u8a9e\u6587\u5b57\u5316\u3051\u3092\u9632\u3050JSON_UNESCAPED_UNICODE\u306e\u4f7f\u3044\u65b9<\/h3>\n\n\n\n<p><strong>JSON_UNESCAPED_UNICODE\u3068\u306f<\/strong><\/p>\n\n\n\n<p>\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u306f\u3001<code>json_encode()<\/code>\u306f\u975eASCII\u6587\u5b57\uff08\u65e5\u672c\u8a9e\u306a\u3069\uff09\u3092Unicode\u30a8\u30b9\u30b1\u30fc\u30d7\u30b7\u30fc\u30b1\u30f3\u30b9\uff08<code>\\uXXXX<\/code>\u5f62\u5f0f\uff09\u306b\u5909\u63db\u3057\u307e\u3059\u3002<code>JSON_UNESCAPED_UNICODE<\/code>\u30d5\u30e9\u30b0\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u3053\u308c\u3089\u306e\u6587\u5b57\u3092\u30a8\u30b9\u30b1\u30fc\u30d7\u305b\u305a\u306b\u305d\u306e\u307e\u307e\u51fa\u529b\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>\u4f7f\u7528\u4f8b<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">$data = [\n    'title' =&gt; '\u3053\u3093\u306b\u3061\u306f\u4e16\u754c\uff01',\n    'description' =&gt; '\u65e5\u672c\u8a9e\u3092\u542b\u3080JSON\u30c7\u30fc\u30bf'\n];\n\n\/\/ \u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u51fa\u529b\uff08Unicode\u30a8\u30b9\u30b1\u30fc\u30d7\u3042\u308a\uff09\necho \"\u3010\u30c7\u30d5\u30a9\u30eb\u30c8\u3011\\n\";\necho json_encode($data);\necho \"\\n\\n\";\n\n\/\/ JSON_UNESCAPED_UNICODE\u3092\u4f7f\u7528\u3057\u305f\u51fa\u529b\necho \"\u3010JSON_UNESCAPED_UNICODE\u4f7f\u7528\u3011\\n\";\necho json_encode($data, JSON_UNESCAPED_UNICODE);\n<\/pre>\n\n\n\n<p><strong>\u51fa\u529b\u7d50\u679c<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\u3010\u30c7\u30d5\u30a9\u30eb\u30c8\u3011\n{\"title\":\"\\u3053\\u3093\\u306b\\u3061\\u306f\\u4e16\\u754c\\uff01\",\"description\":\"\\u65e5\\u672c\\u8a9e\\u3092\\u542b\\u3080JSON\\u30c7\\u30fc\\u30bf\"}\n\n\u3010JSON_UNESCAPED_UNICODE\u4f7f\u7528\u3011\n{\"title\":\"\u3053\u3093\u306b\u3061\u306f\u4e16\u754c\uff01\",\"description\":\"\u65e5\u672c\u8a9e\u3092\u542b\u3080JSON\u30c7\u30fc\u30bf\"}\n<\/pre>\n\n\n\n<p><strong>\u30e1\u30ea\u30c3\u30c8\u3068\u6ce8\u610f\u70b9<\/strong><\/p>\n\n\n\n<p><code>JSON_UNESCAPED_UNICODE<\/code>\u306e\u4e3b\u306a\u30e1\u30ea\u30c3\u30c8\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4eba\u9593\u304c\u8aad\u307f\u3084\u3059\u304f\u306a\u308b<\/li>\n\n\n\n<li>\u30c7\u30d0\u30c3\u30b0\u304c\u5bb9\u6613\u306b\u306a\u308b<\/li>\n\n\n\n<li>JSON\u6587\u5b57\u5217\u306e\u30b5\u30a4\u30ba\u304c\u5c0f\u3055\u304f\u306a\u308b\u5834\u5408\u304c\u3042\u308b\uff08\u30a8\u30b9\u30b1\u30fc\u30d7\u30b7\u30fc\u30b1\u30f3\u30b9\u3088\u308a\u3082\u5143\u306e\u6587\u5b57\u306e\u65b9\u304c\u77ed\u3044\u5834\u5408\uff09<\/li>\n<\/ul>\n\n\n\n<p>\u305f\u3060\u3057\u3001\u3044\u304f\u3064\u304b\u306e\u6ce8\u610f\u70b9\u3082\u3042\u308a\u307e\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u51fa\u529b\u5148\u306e\u30b7\u30b9\u30c6\u30e0\u304c\u9069\u5207\u306a\u6587\u5b57\u30b3\u30fc\u30c9\uff08UTF-8\uff09\u3067JSON\u3092\u51e6\u7406\u3067\u304d\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b<\/li>\n\n\n\n<li>API\u5fdc\u7b54\u306a\u3069\u3001\u69d8\u3005\u306a\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3067\u5229\u7528\u3055\u308c\u308b\u5834\u5408\u306f\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5074\u306e\u6587\u5b57\u30b3\u30fc\u30c9\u51e6\u7406\u80fd\u529b\u3092\u8003\u616e\u3059\u308b<\/li>\n<\/ul>\n\n\n\n<p>\u5b9f\u52d9\u3067\u306f\u3001\u7279\u306b\u793e\u5185\u30b7\u30b9\u30c6\u30e0\u3084\u6587\u5b57\u30b3\u30fc\u30c9\u51e6\u7406\u304c\u78ba\u5b9f\u306a\u30b7\u30b9\u30c6\u30e0\u9593\u3067\u306f\u3001\u65e5\u672c\u8a9e\u3092\u591a\u304f\u6271\u3046\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3067<code>JSON_UNESCAPED_UNICODE<\/code>\u30d5\u30e9\u30b0\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u4e00\u822c\u7684\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-10\">JSON_FORCE_OBJECT\u3067\u914d\u5217\u3092\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u5f62\u5f0f\u306b\u5f37\u5236\u5909\u63db<\/h3>\n\n\n\n<p><strong>JSON_FORCE_OBJECT\u3068\u306f<\/strong><\/p>\n\n\n\n<p>\u3053\u306e\u30d5\u30e9\u30b0\u306f\u3001PHP\u306e\u914d\u5217\u3092\u5e38\u306bJSON\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u5f62\u5f0f\uff08<code>{}<\/code>\u3067\u56f2\u307e\u308c\u305f\u5f62\u5f0f\uff09\u306b\u5909\u63db\u3057\u307e\u3059\u3002\u901a\u5e38\u3001PHP\u306e\u6570\u5024\u30ad\u30fc\u3092\u6301\u3064\u9023\u7d9a\u3057\u305f\u914d\u5217\u306f<code>[]<\/code>\u5f62\u5f0f\u306eJSON\u914d\u5217\u306b\u5909\u63db\u3055\u308c\u307e\u3059\u304c\u3001\u3053\u306e\u30d5\u30e9\u30b0\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u5f37\u5236\u7684\u306b<code>{}<\/code>\u5f62\u5f0f\u306b\u5909\u63db\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>\u4f7f\u7528\u4f8b<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u7a7a\u306e\u914d\u5217\n$empty = [];\necho \"\u7a7a\u306e\u914d\u5217\uff08\u30c7\u30d5\u30a9\u30eb\u30c8\uff09: \" . json_encode($empty) . \"\\n\";\necho \"\u7a7a\u306e\u914d\u5217\uff08JSON_FORCE_OBJECT\uff09: \" . json_encode($empty, JSON_FORCE_OBJECT) . \"\\n\\n\";\n\n\/\/ \u6570\u5024\u30ad\u30fc\u306e\u9023\u7d9a\u3057\u305f\u914d\u5217\n$fruits = ['apple', 'orange', 'banana'];\necho \"\u9023\u7d9a\u914d\u5217\uff08\u30c7\u30d5\u30a9\u30eb\u30c8\uff09: \" . json_encode($fruits) . \"\\n\";\necho \"\u9023\u7d9a\u914d\u5217\uff08JSON_FORCE_OBJECT\uff09: \" . json_encode($fruits, JSON_FORCE_OBJECT) . \"\\n\";\n<\/pre>\n\n\n\n<p><strong>\u51fa\u529b\u7d50\u679c<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\u7a7a\u306e\u914d\u5217\uff08\u30c7\u30d5\u30a9\u30eb\u30c8\uff09: []\n\u7a7a\u306e\u914d\u5217\uff08JSON_FORCE_OBJECT\uff09: {}\n\n\u9023\u7d9a\u914d\u5217\uff08\u30c7\u30d5\u30a9\u30eb\u30c8\uff09: [\"apple\",\"orange\",\"banana\"]\n\u9023\u7d9a\u914d\u5217\uff08JSON_FORCE_OBJECT\uff09: {\"0\":\"apple\",\"1\":\"orange\",\"2\":\"banana\"}\n<\/pre>\n\n\n\n<p><strong>\u6d3b\u7528\u30b7\u30fc\u30f3<\/strong><\/p>\n\n\n\n<p>\u3053\u306e\u30d5\u30e9\u30b0\u304c\u7279\u306b\u6709\u7528\u306a\u30b1\u30fc\u30b9\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u4e00\u8cab\u3057\u305f\u5f62\u5f0f\u304c\u5fc5\u8981\u306a\u5834\u5408<\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li>JSON\u51e6\u7406\u30e9\u30a4\u30d6\u30e9\u30ea\u306b\u3088\u3063\u3066\u306f\u3001\u5e38\u306b\u540c\u3058\u5f62\u5f0f\uff08\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u5f62\u5f0f\uff09\u306eJSON\u304c\u6271\u3044\u3084\u3059\u3044\u5834\u5408\u304c\u3042\u308b<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u7a7a\u306e\u914d\u5217\u304c\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3068\u3057\u3066\u6271\u308f\u308c\u308b\u3079\u304d\u5834\u5408<\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li>\u7a7a\u306e\u914d\u5217<code>[]<\/code>\u304c\u7279\u5b9a\u306e\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u3067\u8aa4\u89e3\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u5834\u5408\u3001<code>{}<\/code>\u3068\u3057\u3066\u51fa\u529b\u3067\u304d\u308b<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u660e\u793a\u7684\u306b\u4fdd\u6301\u3057\u305f\u3044\u5834\u5408<\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li>\u914d\u5217\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\uff08\u30ad\u30fc\uff09\u304c\u610f\u5473\u3092\u6301\u3064\u5834\u5408\u306b\u6709\u7528<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-11\">\u305d\u306e\u4ed6\u306e\u4fbf\u5229\u306a\u30d5\u30e9\u30b0\u30aa\u30d7\u30b7\u30e7\u30f3<\/h3>\n\n\n\n<p><code>json_encode()<\/code>\u306b\u306f\u3001\u4e0a\u8a18\u4ee5\u5916\u306b\u3082\u591a\u6570\u306e\u4fbf\u5229\u306a\u30d5\u30e9\u30b0\u30aa\u30d7\u30b7\u30e7\u30f3\u304c\u3042\u308a\u307e\u3059\u3002\u3088\u304f\u4f7f\u308f\u308c\u308b\u3082\u306e\u3092\u3054\u7d39\u4ecb\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-12\">\u6570\u5024\u5909\u63db\uff1aJSON_NUMERIC_CHECK<\/h4>\n\n\n\n<p>\u6587\u5b57\u5217\u3068\u3057\u3066\u683c\u7d0d\u3055\u308c\u3066\u3044\u308b\u6570\u5024\u3092\u3001\u81ea\u52d5\u7684\u306b\u6570\u5024\u578b\u306b\u5909\u63db\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">$data = ['id' =&gt; '123', 'price' =&gt; '99.99', 'code' =&gt; '01'];\necho json_encode($data) . \"\\n\";\necho json_encode($data, JSON_NUMERIC_CHECK);\n<\/pre>\n\n\n\n<p><strong>\u51fa\u529b\u7d50\u679c<\/strong>\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">{\"id\":\"123\",\"price\":\"99.99\",\"code\":\"01\"}\n{\"id\":123,\"price\":99.99,\"code\":1}\n<\/pre>\n\n\n\n<p>\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u304b\u3089\u53d6\u5f97\u3057\u305f\u5024\u304c\u6587\u5b57\u5217\u3068\u3057\u3066\u683c\u7d0d\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u306b\u7279\u306b\u4fbf\u5229\u3067\u3059\u3002\u305f\u3060\u3057\u3001\u5148\u982d\u304c0\u306e\u6570\u5024\u6587\u5b57\u5217\uff08\u4f8b\uff1a\u90f5\u4fbf\u756a\u53f7\u306a\u3069\uff09\u3082\u6570\u5024\u306b\u5909\u63db\u3055\u308c\u308b\u305f\u3081\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-13\">\u30b9\u30e9\u30c3\u30b7\u30e5\u306e\u30a8\u30b9\u30b1\u30fc\u30d7\u5236\u5fa1\uff1aJSON_UNESCAPED_SLASHES<\/h4>\n\n\n\n<p>\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u306f\u3001\u30b9\u30e9\u30c3\u30b7\u30e5\uff08\/\uff09\u306f\u30a8\u30b9\u30b1\u30fc\u30d7\u3055\u308c\u307e\u3059\uff08<code>\\\/<\/code>\uff09\u3002\u3053\u306e\u30d5\u30e9\u30b0\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u30b9\u30e9\u30c3\u30b7\u30e5\u304c\u30a8\u30b9\u30b1\u30fc\u30d7\u3055\u308c\u306a\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">$data = ['url' =&gt; 'https:\/\/example.com\/path\/to\/resource'];\necho json_encode($data) . \"\\n\";\necho json_encode($data, JSON_UNESCAPED_SLASHES);\n<\/pre>\n\n\n\n<p><strong>\u51fa\u529b\u7d50\u679c<\/strong>\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">{\"url\":\"https:\\\/\\\/example.com\\\/path\\\/to\\\/resource\"}\n{\"url\":\"https:\/\/example.com\/path\/to\/resource\"}\n<\/pre>\n\n\n\n<p>URL\u3084\u30d5\u30a1\u30a4\u30eb\u30d1\u30b9\u3092\u542b\u3080JSON\u3067\u306f\u3001\u3053\u306e\u30d5\u30e9\u30b0\u3092\u4f7f\u7528\u3059\u308b\u3068\u53ef\u8aad\u6027\u304c\u5411\u4e0a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-14\">HTML\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u5909\u63db\uff1aJSON_HEX_TAG, JSON_HEX_AMP, JSON_HEX_APOS, JSON_HEX_QUOT<\/h4>\n\n\n\n<p>HTML\u7279\u6b8a\u6587\u5b57\uff08<code>&lt;&gt;<\/code>\u3001<code>&amp;<\/code>\u3001<code>'<\/code>\u3001<code>\"<\/code>\uff09\u309216\u9032\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u306b\u5909\u63db\u3057\u307e\u3059\u3002JSON\u3092HTML\u306b\u76f4\u63a5\u57cb\u3081\u8fbc\u3080\u5834\u5408\u306eXSS\u5bfe\u7b56\u306b\u6709\u7528\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">$data = ['html' =&gt; '&lt;p&gt;\u30c6\u30ad\u30b9\u30c8 &amp; \"\u5f15\u7528\" &amp; \\'\u30a2\u30dd\u30b9\u30c8\u30ed\u30d5\u30a3\\'&lt;\/p&gt;'];\n\n\/\/ \u30c7\u30d5\u30a9\u30eb\u30c8\necho json_encode($data, JSON_UNESCAPED_UNICODE) . \"\\n\";\n\n\/\/ HTML\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u306b\u5909\u63db\necho json_encode(\n    $data,\n    JSON_HEX_TAG | JSON_HEX_AMP | JSON_HEX_APOS | JSON_HEX_QUOT | JSON_UNESCAPED_UNICODE\n);\n<\/pre>\n\n\n\n<p><strong>\u51fa\u529b\u7d50\u679c<\/strong>\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">{\"html\":\"&lt;p&gt;\u30c6\u30ad\u30b9\u30c8 &amp; \\\"\u5f15\u7528\\\" &amp; '\u30a2\u30dd\u30b9\u30c8\u30ed\u30d5\u30a3'&lt;\/p&gt;\"}\n{\"html\":\"\\u003Cp\\u003E\u30c6\u30ad\u30b9\u30c8 \\u0026 \\u0022\u5f15\u7528\\u0022 \\u0026 \\u0027\u30a2\u30dd\u30b9\u30c8\u30ed\u30d5\u30a3\\u0027\\u003C\/p\\u003E\"}\n<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-15\">\u30a8\u30e9\u30fc\u6642\u306e\u90e8\u5206\u51fa\u529b\uff1aJSON_PARTIAL_OUTPUT_ON_ERROR<\/h4>\n\n\n\n<p>\u30a8\u30f3\u30b3\u30fc\u30c9\u3067\u304d\u306a\u3044\u5024\u304c\u3042\u308b\u5834\u5408\u3067\u3082\u3001\u53ef\u80fd\u306a\u9650\u308a\u51fa\u529b\u3057\u307e\u3059\u3002\u901a\u5e38\u3001\u30a8\u30f3\u30b3\u30fc\u30c9\u3067\u304d\u306a\u3044\u5024\u304c\u3042\u308b\u3068false\u304c\u8fd4\u308a\u307e\u3059\u304c\u3001\u3053\u306e\u30d5\u30e9\u30b0\u3092\u4f7f\u7528\u3059\u308b\u3068\u90e8\u5206\u7684\u306b\u51fa\u529b\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ UTF-8\u3068\u3057\u3066\u7121\u52b9\u306a\u30d0\u30a4\u30c8\u30b7\u30fc\u30b1\u30f3\u30b9\u3092\u542b\u3080\u914d\u5217\n$data = [\"valid\" =&gt; \"\u6b63\u5e38\u306a\u30c7\u30fc\u30bf\", \"invalid\" =&gt; \"\\xB1\\x31\"];\n\n\/\/ \u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u52d5\u4f5c\nvar_dump(json_encode($data, JSON_UNESCAPED_UNICODE));\n\n\/\/ JSON_PARTIAL_OUTPUT_ON_ERROR\u4f7f\u7528\nvar_dump(json_encode($data, JSON_PARTIAL_OUTPUT_ON_ERROR | JSON_UNESCAPED_UNICODE));\n<\/pre>\n\n\n\n<p><strong>\u51fa\u529b\u7d50\u679c<\/strong>\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">bool(false)\nstring(24) \"{\"valid\":\"\u6b63\u5e38\u306a\u30c7\u30fc\u30bf\"}\"\n<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-16\">\u5c0f\u6570\u70b9\u306e\u4fdd\u6301\uff1aJSON_PRESERVE_ZERO_FRACTION<\/h4>\n\n\n\n<p>\u6574\u6570\u5024\u3067\u3082\u5c0f\u6570\u70b9\u8868\u8a18\u3092\u7dad\u6301\u3057\u307e\u3059\uff08\u4f8b\uff1a<code>1.0<\/code>\u3092<code>1.0<\/code>\u306e\u307e\u307e\u306b\u3059\u308b\uff09\u3002JavaScript\u5074\u3067\u6570\u5024\u306e\u578b\uff08\u6574\u6570\u304b\u6d6e\u52d5\u5c0f\u6570\u70b9\u304b\uff09\u3092\u533a\u5225\u3057\u305f\u3044\u5834\u5408\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">$data = ['integer' =&gt; 1, 'float' =&gt; 1.0];\necho json_encode($data) . \"\\n\";\necho json_encode($data, JSON_PRESERVE_ZERO_FRACTION);\n<\/pre>\n\n\n\n<p><strong>\u51fa\u529b\u7d50\u679c<\/strong>\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">{\"integer\":1,\"float\":1}\n{\"integer\":1,\"float\":1.0}\n<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-17\">\u8907\u6570\u30d5\u30e9\u30b0\u306e\u7d44\u307f\u5408\u308f\u305b<\/h4>\n\n\n\n<p>\u5b9f\u969b\u306e\u958b\u767a\u3067\u306f\u3001\u8907\u6570\u306e\u30d5\u30e9\u30b0\u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u4e00\u822c\u7684\u3067\u3059\u3002\u30d5\u30e9\u30b0\u306f\u30d3\u30c3\u30c8\u6f14\u7b97\u5b50<code>|<\/code>\uff08\u30d1\u30a4\u30d7\uff09\u3067\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">$data = [\n    'name' =&gt; '\u7530\u4e2d\u82b1\u5b50',\n    'url' =&gt; 'https:\/\/example.com\/users\/profile',\n    'points' =&gt; '100',\n    'data' =&gt; [\n        ['id' =&gt; 1, 'value' =&gt; 10.0],\n        ['id' =&gt; 2, 'value' =&gt; 20.0]\n    ]\n];\n\n\/\/ \u8907\u6570\u306e\u30d5\u30e9\u30b0\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\necho json_encode(\n    $data,\n    JSON_PRETTY_PRINT |\n    JSON_UNESCAPED_UNICODE |\n    JSON_UNESCAPED_SLASHES |\n    JSON_NUMERIC_CHECK |\n    JSON_PRESERVE_ZERO_FRACTION\n);\n<\/pre>\n\n\n\n<p><strong>\u51fa\u529b\u7d50\u679c<\/strong>\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">{\n    \"name\": \"\u7530\u4e2d\u82b1\u5b50\",\n    \"url\": \"https:\/\/example.com\/users\/profile\",\n    \"points\": 100,\n    \"data\": [\n        {\n            \"id\": 1,\n            \"value\": 10.0\n        },\n        {\n            \"id\": 2,\n            \"value\": 20.0\n        }\n    ]\n}\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-18\">PHP\u30d0\u30fc\u30b8\u30e7\u30f3\u306b\u3088\u308b\u30d5\u30e9\u30b0\u306e\u9055\u3044<\/h3>\n\n\n\n<p><code>json_encode()<\/code>\u306e\u30d5\u30e9\u30b0\u30aa\u30d7\u30b7\u30e7\u30f3\u306fPHP\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u306b\u3088\u3063\u3066\u8ffd\u52a0\u3055\u308c\u3066\u304d\u307e\u3057\u305f\u3002\u4e3b\u8981\u306a\u30d5\u30e9\u30b0\u3068\u5c0e\u5165\u3055\u308c\u305f\u30d0\u30fc\u30b8\u30e7\u30f3\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\uff1a<\/p>\n\n\n<div id=\"id-0eb5fdc8-6f33-4b95-b10d-928ffb3e99f0\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>PHP \u30d0\u30fc\u30b8\u30e7\u30f3<\/th><th>\u5c0e\u5165\u3055\u308c\u305f\u30d5\u30e9\u30b0<\/th><\/tr><\/thead><tbody><tr><td>PHP 5.3.0<\/td><td>JSON_HEX_TAG, JSON_HEX_AMP, JSON_HEX_APOS, JSON_HEX_QUOT, JSON_FORCE_OBJECT<\/td><\/tr><tr><td>PHP 5.4.0<\/td><td>JSON_NUMERIC_CHECK, JSON_PRETTY_PRINT, JSON_UNESCAPED_SLASHES, JSON_UNESCAPED_UNICODE<\/td><\/tr><tr><td>PHP 5.5.0<\/td><td>JSON_PARTIAL_OUTPUT_ON_ERROR<\/td><\/tr><tr><td>PHP 7.0.0<\/td><td>JSON_PRESERVE_ZERO_FRACTION<\/td><\/tr><tr><td>PHP 7.1.0<\/td><td>JSON_UNESCAPED_LINE_TERMINATORS<\/td><\/tr><tr><td>PHP 7.2.0<\/td><td>JSON_INVALID_UTF8_SUBSTITUTE, JSON_INVALID_UTF8_IGNORE<\/td><\/tr><tr><td>PHP 7.3.0<\/td><td>JSON_THROW_ON_ERROR<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<p>\u4f7f\u7528\u3057\u3066\u3044\u308bPHP\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u306b\u3088\u3063\u3066\u5229\u7528\u53ef\u80fd\u306a\u30d5\u30e9\u30b0\u304c\u7570\u306a\u308b\u305f\u3081\u3001\u7279\u306b\u8907\u6570\u306e\u74b0\u5883\u3067\u52d5\u4f5c\u3059\u308b\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u5834\u5408\u306f\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u9069\u5207\u306a\u30d5\u30e9\u30b0\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001<code>json_encode()<\/code>\u306e\u51fa\u529b\u3092\u76ee\u7684\u306b\u5408\u308f\u305b\u3066\u6700\u9069\u5316\u3067\u304d\u307e\u3059\u3002\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001<code>json_encode()<\/code>\u4f7f\u7528\u6642\u306b\u3088\u304f\u3042\u308b\u30a8\u30e9\u30fc\u3068\u5bfe\u51e6\u6cd5\u306b\u3064\u3044\u3066\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-19\">json_encode\u3067\u767a\u751f\u3057\u304c\u3061\u306a\u30a8\u30e9\u30fc\u3068\u5bfe\u51e6\u6cd5<\/h2>\n\n\n\n<p>PHP\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u958b\u767a\u306b\u304a\u3044\u3066\u3001<code>json_encode()<\/code>\u95a2\u6570\u306f\u983b\u7e41\u306b\u4f7f\u7528\u3055\u308c\u308b\u4fbf\u5229\u306a\u95a2\u6570\u3067\u3059\u304c\u3001\u69d8\u3005\u306a\u72b6\u6cc1\u3067\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u4e00\u822c\u7684\u306b\u767a\u751f\u3059\u308b\u30a8\u30e9\u30fc\u3068\u305d\u306e\u5bfe\u51e6\u6cd5\u3092\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-20\">null\u304c\u8fd4\u3063\u3066\u304f\u308b\u539f\u56e0\u3068\u78ba\u8a8d\u65b9\u6cd5<\/h3>\n\n\n\n<p><strong>\u30a8\u30e9\u30fc\u306e\u57fa\u672c<\/strong><\/p>\n\n\n\n<p><code>json_encode()<\/code>\u304cfalse\u3092\u8fd4\u3059\u5834\u5408\u3001\u4f55\u3089\u304b\u306e\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u3066\u3044\u307e\u3059\u3002PHP 5.5.0\u4ee5\u964d\u3067\u306f\u3001\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3059\u308b\u3068\u660e\u793a\u7684\u306bfalse\u3092\u8fd4\u3057\u307e\u3059\u304c\u3001\u305d\u308c\u4ee5\u524d\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u3067\u306fnull\u3092\u8fd4\u3059\u5834\u5408\u3082\u3042\u308a\u307e\u3057\u305f\u3002\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u305f\u969b\u306b\u4f55\u304c\u554f\u984c\u306a\u306e\u304b\u3092\u6b63\u78ba\u306b\u628a\u63e1\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<p><strong>\u4e3b\u306a\u539f\u56e0\u3068\u5bfe\u51e6\u6cd5<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u7121\u52b9\u306aUTF-8\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0<\/strong><\/li>\n<\/ol>\n\n\n\n<p>JSON\u306fUTF-8\u3067\u30a8\u30f3\u30b3\u30fc\u30c9\u3055\u308c\u305f\u6587\u5b57\u306e\u307f\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u307e\u3059\u3002\u7570\u306a\u308b\u6587\u5b57\u30b3\u30fc\u30c9\uff08ShiftJIS\u3001EUC-JP\u306a\u3069\uff09\u3084\u4e0d\u6b63\u306a\u30d0\u30a4\u30c8\u5217\u304c\u542b\u307e\u308c\u3066\u3044\u308b\u3068\u3001\u30a8\u30f3\u30b3\u30fc\u30c9\u306b\u5931\u6557\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u4e0d\u6b63\u306aUTF-8\u30b7\u30fc\u30b1\u30f3\u30b9\u3092\u542b\u3080\u30c7\u30fc\u30bf\n$text = \"\u3053\u3093\u306b\u3061\u306f\" . \"\\xB1\\x31\"; \/\/ \u4e0d\u6b63\u306a\u30d0\u30a4\u30c8\u5217\u3092\u542b\u3080\n$json = json_encode($text);\n\nif ($json === false) {\n    echo \"\u30a8\u30e9\u30fc: \" . json_last_error_msg(); \n    \/\/ \u51fa\u529b: \u30a8\u30e9\u30fc: Malformed UTF-8 characters, possibly incorrectly encoded\n}\n\n\/\/ \u89e3\u6c7a\u7b56: UTF-8\u306b\u6b63\u3057\u304f\u5909\u63db\u3059\u308b\n$fixed_text = mb_convert_encoding($text, 'UTF-8', 'auto');\n$json = json_encode($fixed_text);\n<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>NAN\u3001INF\u3001-INF\u306e\u5024<\/strong><\/li>\n<\/ol>\n\n\n\n<p>JSON\u306e\u4ed5\u69d8\u4e0a\u3001<code>NAN<\/code>\uff08\u975e\u6570\uff09\u3084<code>INF<\/code>\uff08\u7121\u9650\u5927\uff09\u306e\u5024\u306f\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u3066\u3044\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">$data = [\n    \"valid\" =&gt; 123,\n    \"invalid_nan\" =&gt; NAN,\n    \"invalid_inf\" =&gt; INF\n];\n\n$json = json_encode($data);\n\/\/ PHP 5.5.0\u672a\u6e80: $json === false\n\/\/ PHP 5.5.0\u4ee5\u964d: $json \u306f {\"valid\":123,\"invalid_nan\":null,\"invalid_inf\":null}\n\n\/\/ \u89e3\u6c7a\u7b56: \u7279\u6b8a\u306a\u6d6e\u52d5\u5c0f\u6570\u70b9\u5024\u3092\u691c\u51fa\u3057\u3066\u7f6e\u304d\u63db\u3048\u308b\nfunction fix_float_values($data) {\n    if (is_array($data) || is_object($data)) {\n        foreach ($data as &amp;$value) {\n            $value = fix_float_values($value);\n        }\n        return $data;\n    }\n    \n    if (is_float($data)) {\n        if (is_nan($data)) return 0; \/\/ \u307e\u305f\u306f null\n        if (is_infinite($data)) return ($data &gt; 0) ? PHP_INT_MAX : -PHP_INT_MAX;\n    }\n    \n    return $data;\n}\n\n$fixed_data = fix_float_values($data);\n$json = json_encode($fixed_data);\n<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>\u518d\u5e30\u7684\u306a\u6df1\u3055\u5236\u9650<\/strong><\/li>\n<\/ol>\n\n\n\n<p>\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u306f\u3001<code>json_encode()<\/code>\u306f\u6700\u5927512\u30ec\u30d9\u30eb\u307e\u3067\u306e\u6df1\u3055\u3057\u304b\u51e6\u7406\u3067\u304d\u307e\u305b\u3093\u3002\u305d\u308c\u3092\u8d85\u3048\u308b\u6df1\u3055\u306e\u69cb\u9020\u306f\u30a8\u30e9\u30fc\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u975e\u5e38\u306b\u6df1\u3044\u30cd\u30b9\u30c8\u3055\u308c\u305f\u914d\u5217\u3092\u4f5c\u6210\nfunction create_deep_array($depth) {\n    if ($depth &lt;= 0) {\n        return \"bottom\";\n    }\n    return [\"deeper\" =&gt; create_deep_array($depth - 1)];\n}\n\n$deep_array = create_deep_array(1000); \/\/ 512\u3092\u8d85\u3048\u308b\u6df1\u3055\n$json = json_encode($deep_array);\n\nif ($json === false) {\n    echo \"\u30a8\u30e9\u30fc: \" . json_last_error_msg();\n    \/\/ \u51fa\u529b: \u30a8\u30e9\u30fc: Maximum stack depth exceeded\n}\n\n\/\/ \u89e3\u6c7a\u7b561: \u6df1\u3055\u5236\u9650\u3092\u5897\u3084\u3059\uff08\u7b2c3\u5f15\u6570\uff09\n$json = json_encode($deep_array, 0, 1024);\n\n\/\/ \u89e3\u6c7a\u7b562: \u30c7\u30fc\u30bf\u69cb\u9020\u3092\u5358\u7d14\u5316\u3059\u308b\nfunction simplify_structure($data, $max_depth = 10, $current_depth = 0) {\n    if ($current_depth &gt;= $max_depth) {\n        return \"[\u6df1\u3059\u304e\u308b\u69cb\u9020]\";\n    }\n    \n    if (is_array($data) || is_object($data)) {\n        $result = [];\n        foreach ($data as $key =&gt; $value) {\n            $result[$key] = simplify_structure($value, $max_depth, $current_depth + 1);\n        }\n        return $result;\n    }\n    \n    return $data;\n}\n\n$simplified = simplify_structure($deep_array);\n$json = json_encode($simplified); \/\/ \u6210\u529f\n<\/pre>\n\n\n\n<p><strong>\u30a8\u30e9\u30fc\u306e\u691c\u51fa\u3068\u8a3a\u65ad<\/strong><\/p>\n\n\n\n<p><code>json_encode()<\/code>\u304cfalse\u3092\u8fd4\u3057\u305f\u5834\u5408\u306f\u3001\u4ee5\u4e0b\u306e\u95a2\u6570\u3092\u4f7f\u7528\u3057\u3066\u30a8\u30e9\u30fc\u60c5\u5831\u3092\u53d6\u5f97\u3067\u304d\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ JSON\u30a8\u30f3\u30b3\u30fc\u30c9\u3092\u8a66\u307f\u308b\n$json = json_encode($data);\n\n\/\/ \u30a8\u30e9\u30fc\u30c1\u30a7\u30c3\u30af\nif ($json === false) {\n    $error_code = json_last_error();\n    $error_msg = json_last_error_msg();\n    \n    echo \"JSON\u30a8\u30f3\u30b3\u30fc\u30c9\u30a8\u30e9\u30fc ({$error_code}): {$error_msg}\\n\";\n    \n    \/\/ \u30a8\u30e9\u30fc\u30b3\u30fc\u30c9\u306b\u57fa\u3065\u3044\u305f\u5bfe\u51e6\n    switch ($error_code) {\n        case JSON_ERROR_UTF8:\n            echo \"UTF-8\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u306e\u554f\u984c\u3067\u3059\u3002\u30c7\u30fc\u30bf\u3092\u4fee\u6b63\u3057\u3066\u304f\u3060\u3055\u3044\u3002\";\n            break;\n        case JSON_ERROR_RECURSION:\n            echo \"\u5faa\u74b0\u53c2\u7167\u304c\u691c\u51fa\u3055\u308c\u307e\u3057\u305f\u3002\";\n            break;\n        case JSON_ERROR_DEPTH:\n            echo \"\u6700\u5927\u6df1\u3055\u3092\u8d85\u3048\u307e\u3057\u305f\u3002\";\n            break;\n        \/\/ \u305d\u306e\u4ed6\u306e\u30a8\u30e9\u30fc\u30b1\u30fc\u30b9\n    }\n}\n<\/pre>\n\n\n\n<p>PHP 7.3.0\u4ee5\u964d\u3067\u306f\u3001\u4f8b\u5916\u3092\u30b9\u30ed\u30fc\u3059\u308b\u30aa\u30d7\u30b7\u30e7\u30f3\u3082\u5229\u7528\u3067\u304d\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">try {\n    $json = json_encode($data, JSON_THROW_ON_ERROR);\n    \/\/ \u6210\u529f\u6642\u306e\u51e6\u7406\n} catch (JsonException $e) {\n    echo \"JSON\u30a8\u30f3\u30b3\u30fc\u30c9\u30a8\u30e9\u30fc: \" . $e-&gt;getMessage();\n}\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-21\">\u5faa\u74b0\u53c2\u7167\u554f\u984c\u306e\u5bfe\u7b56\u3068\u30c7\u30d0\u30c3\u30b0\u624b\u6cd5<\/h3>\n\n\n\n<p><strong>\u5faa\u74b0\u53c2\u7167\u3068\u306f<\/strong><\/p>\n\n\n\n<p>\u5faa\u74b0\u53c2\u7167\u3068\u306f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3084\u914d\u5217\u304c\u76f4\u63a5\u7684\u307e\u305f\u306f\u9593\u63a5\u7684\u306b\u81ea\u5206\u81ea\u8eab\u3092\u53c2\u7167\u3057\u3066\u3044\u308b\u72b6\u614b\u3067\u3059\u3002<code>json_encode()<\/code>\u306f\u5faa\u74b0\u53c2\u7167\u3092\u691c\u51fa\u3059\u308b\u3068\u30a8\u30e9\u30fc\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>\u5faa\u74b0\u53c2\u7167\u306e\u4f8b<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u76f4\u63a5\u7684\u306a\u5faa\u74b0\u53c2\u7167<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u81ea\u5206\u81ea\u8eab\u3092\u53c2\u7167\u3059\u308b\u914d\u5217\n$data = [];\n$data['self'] = &amp;$data; \/\/ \u81ea\u5206\u81ea\u8eab\u3078\u306e\u53c2\u7167\n\n$json = json_encode($data);\n\/\/ \u30a8\u30e9\u30fc: JSON_ERROR_RECURSION\n<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u9593\u63a5\u7684\u306a\u5faa\u74b0\u53c2\u7167<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u76f8\u4e92\u306b\u53c2\u7167\u3059\u308b\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\nclass Person {\n    public $name;\n    public $friend;\n    \n    public function __construct($name) {\n        $this-&gt;name = $name;\n    }\n    \n    public function makeFriend(Person $person) {\n        $this-&gt;friend = $person;\n    }\n}\n\n$alice = new Person(\"Alice\");\n$bob = new Person(\"Bob\");\n\n$alice-&gt;makeFriend($bob);\n$bob-&gt;makeFriend($alice); \/\/ \u5faa\u74b0\u53c2\u7167\u304c\u767a\u751f\n\n$json = json_encode($alice);\n\/\/ \u30a8\u30e9\u30fc: JSON_ERROR_RECURSION\n<\/pre>\n\n\n\n<p><strong>\u5faa\u74b0\u53c2\u7167\u306e\u5bfe\u7b56<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u53c2\u7167\u306e\u4ee3\u308f\u308a\u306bID\u3092\u4f7f\u7528\u3059\u308b<\/strong><\/li>\n<\/ol>\n\n\n\n<p>\u5faa\u74b0\u53c2\u7167\u306e\u6700\u3082\u4e00\u822c\u7684\u306a\u89e3\u6c7a\u7b56\u306f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u305d\u306e\u3082\u306e\u3067\u306f\u306a\u304f\u3001\u305d\u306eID\u3084\u8b58\u5225\u5b50\u3092\u4fdd\u5b58\u3059\u308b\u3053\u3068\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class Person {\n    public $id;\n    public $name;\n    public $friend_ids = []; \/\/ ID\u306e\u914d\u5217\n    \n    public function __construct($id, $name) {\n        $this-&gt;id = $id;\n        $this-&gt;name = $name;\n    }\n    \n    public function makeFriend(Person $person) {\n        $this-&gt;friend_ids[] = $person-&gt;id; \/\/ ID\u3060\u3051\u3092\u4fdd\u5b58\n    }\n}\n\n$alice = new Person(1, \"Alice\");\n$bob = new Person(2, \"Bob\");\n\n$alice-&gt;makeFriend($bob);\n$bob-&gt;makeFriend($alice);\n\n$json = json_encode([$alice, $bob]); \/\/ \u6210\u529f\n\/\/ \u51fa\u529b: [{\"id\":1,\"name\":\"Alice\",\"friend_ids\":[2]},{\"id\":2,\"name\":\"Bob\",\"friend_ids\":[1]}]\n<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>JsonSerializable\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u5b9f\u88c5<\/strong><\/li>\n<\/ol>\n\n\n\n<p>\u3088\u308a\u67d4\u8edf\u306a\u65b9\u6cd5\u3068\u3057\u3066\u3001<code>JsonSerializable<\/code>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u5b9f\u88c5\u3057\u3066\u3001JSON\u5909\u63db\u6642\u306e\u632f\u308b\u821e\u3044\u3092\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class Person implements JsonSerializable {\n    public $id;\n    public $name;\n    public $friends = [];\n    \n    public function __construct($id, $name) {\n        $this-&gt;id = $id;\n        $this-&gt;name = $name;\n    }\n    \n    public function makeFriend(Person $person) {\n        $this-&gt;friends[] = $person;\n    }\n    \n    public function jsonSerialize() {\n        return [\n            'id' =&gt; $this-&gt;id,\n            'name' =&gt; $this-&gt;name,\n            'friend_ids' =&gt; array_map(function($friend) {\n                return $friend-&gt;id; \/\/ ID\u306e\u307f\u3092\u8fd4\u3059\n            }, $this-&gt;friends)\n        ];\n    }\n}\n\n$alice = new Person(1, \"Alice\");\n$bob = new Person(2, \"Bob\");\n\n$alice-&gt;makeFriend($bob);\n$bob-&gt;makeFriend($alice);\n\n$json = json_encode($alice); \/\/ \u6210\u529f\n<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>\u5faa\u74b0\u53c2\u7167\u3092\u691c\u51fa\u3057\u3066\u51e6\u7406\u3059\u308b\u95a2\u6570<\/strong><\/li>\n<\/ol>\n\n\n\n<p>\u6c4e\u7528\u7684\u306a\u89e3\u6c7a\u7b56\u3068\u3057\u3066\u3001\u5faa\u74b0\u53c2\u7167\u3092\u691c\u51fa\u3057\u3066\u5b89\u5168\u306b\u51e6\u7406\u3059\u308b\u95a2\u6570\u3092\u5b9f\u88c5\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">function remove_circular_references($data, &amp;$processed = []) {\n    \/\/ \u30b9\u30ab\u30e9\u30fc\u5024\u306f\u305d\u306e\u307e\u307e\u8fd4\u3059\n    if (is_scalar($data) || is_null($data)) {\n        return $data;\n    }\n    \n    \/\/ \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306eID\u3092\u53d6\u5f97\n    $id = is_object($data) ? spl_object_hash($data) : serialize($data);\n    \n    \/\/ \u65e2\u306b\u51e6\u7406\u6e08\u307f\u306a\u3089\u30d7\u30ec\u30fc\u30b9\u30db\u30eb\u30c0\u30fc\u3092\u8fd4\u3059\n    if (isset($processed[$id])) {\n        return \"[\u5faa\u74b0\u53c2\u7167]\"; \/\/ \u307e\u305f\u306f null \u3084\u4ed6\u306e\u9069\u5207\u306a\u5024\n    }\n    \n    \/\/ \u51e6\u7406\u6e08\u307f\u3068\u3057\u3066\u30de\u30fc\u30af\n    $processed[$id] = true;\n    \n    \/\/ \u914d\u5217\u3092\u518d\u5e30\u7684\u306b\u51e6\u7406\n    if (is_array($data)) {\n        $result = [];\n        foreach ($data as $key =&gt; $value) {\n            $result[$key] = remove_circular_references($value, $processed);\n        }\n        return $result;\n    }\n    \n    \/\/ \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u518d\u5e30\u7684\u306b\u51e6\u7406\n    if (is_object($data)) {\n        $result = new stdClass();\n        foreach (get_object_vars($data) as $key =&gt; $value) {\n            $result-&gt;$key = remove_circular_references($value, $processed);\n        }\n        return $result;\n    }\n    \n    return $data;\n}\n\n\/\/ \u4f7f\u7528\u4f8b\n$circular_data = [];\n$circular_data['self'] = &amp;$circular_data;\n\n$safe_data = remove_circular_references($circular_data);\n$json = json_encode($safe_data); \/\/ \u6210\u529f\n\/\/ \u51fa\u529b: {\"self\":\"[\u5faa\u74b0\u53c2\u7167]\"}\n<\/pre>\n\n\n\n<p><strong>\u5faa\u74b0\u53c2\u7167\u306e\u30c7\u30d0\u30c3\u30b0<\/strong><\/p>\n\n\n\n<p>\u5faa\u74b0\u53c2\u7167\u3092\u691c\u51fa\u3059\u308b\u305f\u3081\u306e\u4fbf\u5229\u306a\u30c6\u30af\u30cb\u30c3\u30af\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>var_export()\u3092\u4f7f\u7528\u3059\u308b<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ var_export()\u306f\u5faa\u74b0\u53c2\u7167\u3092*RECURSION*\u3068\u3057\u3066\u8868\u793a\n$data = [];\n$data['self'] = &amp;$data;\nvar_export($data);\n\/\/ \u51fa\u529b: array ( 'self' =&gt; *RECURSION* )\n<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>json_encode()\u306e\u30a8\u30e9\u30fc\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">$data = [];\n$data['self'] = &amp;$data;\n$json = json_encode($data);\n\nif ($json === false &amp;&amp; json_last_error() === JSON_ERROR_RECURSION) {\n    echo \"\u5faa\u74b0\u53c2\u7167\u304c\u691c\u51fa\u3055\u308c\u307e\u3057\u305f\u3002\";\n}\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-22\">\u5927\u304d\u306a\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u3067\u306e\u30e1\u30e2\u30ea\u5236\u9650\u3078\u306e\u5bfe\u5fdc<\/h3>\n\n\n\n<p>\u5927\u91cf\u306e\u30c7\u30fc\u30bf\u3092\u51e6\u7406\u3059\u308b\u5834\u5408\u3001PHP\u5b9f\u884c\u74b0\u5883\u306e\u30e1\u30e2\u30ea\u5236\u9650\u306b\u9054\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u554f\u984c\u306b\u5bfe\u3059\u308b\u6226\u7565\u3092\u3044\u304f\u3064\u304b\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>\u30e1\u30e2\u30ea\u5236\u9650\u306e\u5f15\u304d\u4e0a\u3052<\/strong><\/p>\n\n\n\n<p>\u3082\u3063\u3068\u3082\u5358\u7d14\u306a\u89e3\u6c7a\u7b56\u306f\u3001PHP\u306e\u30e1\u30e2\u30ea\u5236\u9650\u3092\u5f15\u304d\u4e0a\u3052\u308b\u3053\u3068\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30b9\u30af\u30ea\u30d7\u30c8\u5185\u3067\u30e1\u30e2\u30ea\u5236\u9650\u3092\u5f15\u304d\u4e0a\u3052\u308b\nini_set('memory_limit', '512M');\n\n\/\/ \u307e\u305f\u306f\u3001php.ini\u3067\u8a2d\u5b9a\n\/\/ memory_limit = 512M\n<\/pre>\n\n\n\n<p>\u305f\u3060\u3057\u3001\u30b5\u30fc\u30d0\u30fc\u74b0\u5883\u306b\u3088\u3063\u3066\u306f\u5236\u9650\u304c\u3042\u308a\u3001\u5e38\u306b\u5f15\u304d\u4e0a\u3052\u3089\u308c\u308b\u3068\u306f\u9650\u308a\u307e\u305b\u3093\u3002\u307e\u305f\u3001\u6839\u672c\u7684\u306a\u89e3\u6c7a\u306b\u306f\u306a\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p><strong>\u30c1\u30e3\u30f3\u30af\u5358\u4f4d\u3067\u306e\u30c7\u30fc\u30bf\u51e6\u7406<\/strong><\/p>\n\n\n\n<p>\u5927\u91cf\u306e\u30c7\u30fc\u30bf\u3092\u6271\u3046\u5834\u5408\u306f\u3001\u4e00\u5ea6\u306b\u5168\u3066\u3092\u51e6\u7406\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u5c0f\u3055\u306a\u30c1\u30e3\u30f3\u30af\u306b\u5206\u5272\u3057\u3066\u51e6\u7406\u3059\u308b\u65b9\u6cd5\u304c\u52b9\u679c\u7684\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/**\n * \u5927\u304d\u306a\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u3092\u30c1\u30e3\u30f3\u30af\u5358\u4f4d\u3067JSON\u30a8\u30f3\u30b3\u30fc\u30c9\u3059\u308b\n *\n * @param array $data \u5927\u304d\u306a\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\n * @param int $chunk_size \u30c1\u30e3\u30f3\u30af\u30b5\u30a4\u30ba\n * @param string $output_file \u51fa\u529b\u30d5\u30a1\u30a4\u30eb\uff08\u7701\u7565\u53ef\uff09\n * @return bool \u51e6\u7406\u6210\u529f\u3057\u305f\u304b\u3069\u3046\u304b\n *\/\nfunction json_encode_large_dataset($data, $chunk_size = 1000, $output_file = null) {\n    $total = count($data);\n    $chunks = ceil($total \/ $chunk_size);\n    \n    if ($output_file) {\n        \/\/ \u30d5\u30a1\u30a4\u30eb\u306b\u66f8\u304d\u8fbc\u3080\u5834\u5408\u306f\u914d\u5217\u958b\u59cb\n        file_put_contents($output_file, \"[\", LOCK_EX);\n    } else {\n        \/\/ \u51fa\u529b\u306e\u5834\u5408\u306f\u914d\u5217\u958b\u59cb\n        echo \"[\";\n    }\n    \n    $first_chunk = true;\n    \n    for ($chunk_index = 0; $chunk_index &lt; $chunks; $chunk_index++) {\n        \/\/ \u30c1\u30e3\u30f3\u30af\u3092\u53d6\u5f97\n        $start = $chunk_index * $chunk_size;\n        $chunk = array_slice($data, $start, $chunk_size);\n        \n        \/\/ JSON\u5f62\u5f0f\u306b\u30a8\u30f3\u30b3\u30fc\u30c9\n        $json_chunk = json_encode($chunk, JSON_UNESCAPED_UNICODE);\n        \n        \/\/ \u914d\u5217\u8868\u8a18\u3092\u53d6\u308a\u9664\u304f\uff08\u6700\u521d\u3068\u6700\u5f8c\u306e[]\u3092\u524a\u9664\uff09\n        $json_chunk = substr($json_chunk, 1, -1);\n        \n        \/\/ \u7a7a\u3067\u306a\u3044\u30c1\u30e3\u30f3\u30af\u306e\u5834\u5408\n        if (!empty($json_chunk)) {\n            \/\/ \u6700\u521d\u306e\u30c1\u30e3\u30f3\u30af\u4ee5\u5916\u306f\u30ab\u30f3\u30de\u3092\u524d\u306b\u4ed8\u3051\u308b\n            $prefix = $first_chunk ? \"\" : \",\";\n            $first_chunk = false;\n            \n            if ($output_file) {\n                \/\/ \u30d5\u30a1\u30a4\u30eb\u306b\u8ffd\u8a18\n                file_put_contents($output_file, $prefix . $json_chunk, FILE_APPEND | LOCK_EX);\n            } else {\n                \/\/ \u51fa\u529b\n                echo $prefix . $json_chunk;\n                flush(); \/\/ \u51fa\u529b\u30d0\u30c3\u30d5\u30a1\u3092\u30d5\u30e9\u30c3\u30b7\u30e5\n            }\n        }\n        \n        \/\/ \u30e1\u30e2\u30ea\u89e3\u653e\n        unset($chunk);\n        unset($json_chunk);\n    }\n    \n    if ($output_file) {\n        \/\/ \u30d5\u30a1\u30a4\u30eb\u306b\u914d\u5217\u7d42\u4e86\u3092\u8ffd\u8a18\n        file_put_contents($output_file, \"]\", FILE_APPEND | LOCK_EX);\n        return true;\n    } else {\n        \/\/ \u51fa\u529b\u306e\u914d\u5217\u7d42\u4e86\n        echo \"]\";\n        return true;\n    }\n}\n\n\/\/ \u4f7f\u7528\u4f8b\n$large_data = [\/* \u5927\u91cf\u306e\u30c7\u30fc\u30bf *\/];\n\n\/\/ \u51fa\u529b\u3059\u308b\u5834\u5408\njson_encode_large_dataset($large_data);\n\n\/\/ \u30d5\u30a1\u30a4\u30eb\u306b\u4fdd\u5b58\u3059\u308b\u5834\u5408\njson_encode_large_dataset($large_data, 1000, 'output.json');\n<\/pre>\n\n\n\n<p><strong>\u30b9\u30c8\u30ea\u30fc\u30df\u30f3\u30b0\u51fa\u529b<\/strong><\/p>\n\n\n\n<p>\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306b\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u3067\u7d50\u679c\u3092\u63d0\u4f9b\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u5834\u5408\u3001JSON\u3092\u30b9\u30c8\u30ea\u30fc\u30df\u30f3\u30b0\u51fa\u529b\u3059\u308b\u65b9\u6cd5\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">function stream_json_response($data_generator) {\n    \/\/ \u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u7121\u52b9\u5316\n    header('Cache-Control: no-cache, must-revalidate');\n    header('Content-Type: application\/json');\n    \n    \/\/ \u914d\u5217\u958b\u59cb\n    echo '[';\n    \n    $first = true;\n    foreach ($data_generator as $item) {\n        \/\/ \u6700\u521d\u306e\u9805\u76ee\u4ee5\u5916\u306f\u30ab\u30f3\u30de\u3092\u4ed8\u3051\u308b\n        echo ($first ? '' : ',') . json_encode($item);\n        $first = false;\n        \n        \/\/ \u30d0\u30c3\u30d5\u30a1\u3092\u30d5\u30e9\u30c3\u30b7\u30e5\u3057\u3066\u5373\u6642\u9001\u4fe1\n        flush();\n        ob_flush();\n    }\n    \n    \/\/ \u914d\u5217\u7d42\u4e86\n    echo ']';\n}\n\n\/\/ \u30c7\u30fc\u30bf\u3092\u751f\u6210\u3059\u308b\u30b8\u30a7\u30cd\u30ec\u30fc\u30bf\nfunction get_data_generator() {\n    \/\/ \u4f8b\uff1a\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u304b\u3089\u5927\u91cf\u306e\u30ec\u30b3\u30fc\u30c9\u3092\u53d6\u5f97\n    $db = new PDO('mysql:host=localhost;dbname=testdb', 'user', 'password');\n    $stmt = $db-&gt;query('SELECT * FROM large_table');\n    \n    while ($row = $stmt-&gt;fetch(PDO::FETCH_ASSOC)) {\n        yield $row; \/\/ 1\u884c\u305a\u3064\u8fd4\u3059\n    }\n}\n\n\/\/ \u4f7f\u7528\u4f8b\nstream_json_response(get_data_generator());\n<\/pre>\n\n\n\n<p><strong>\u5b9f\u884c\u6642\u9593\u306e\u5236\u9650\u5bfe\u7b56<\/strong><\/p>\n\n\n\n<p>\u5927\u304d\u306a\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u3092\u51e6\u7406\u3059\u308b\u5834\u5408\u3001PHP\u306e\u5b9f\u884c\u6642\u9593\u5236\u9650\u306b\u3082\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u5b9f\u884c\u6642\u9593\u5236\u9650\u3092\u7de9\u548c\u307e\u305f\u306f\u89e3\u9664\nset_time_limit(300); \/\/ 5\u5206\n\/\/ \u307e\u305f\u306f\nset_time_limit(0); \/\/ \u7121\u5236\u9650\uff08\u305f\u3060\u3057\u3001\u30b5\u30fc\u30d0\u30fc\u8a2d\u5b9a\u306b\u3088\u3063\u3066\u306f\u8a31\u53ef\u3055\u308c\u306a\u3044\uff09\n<\/pre>\n\n\n\n<p><strong>\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30ec\u30d9\u30eb\u3067\u306eJSON\u751f\u6210<\/strong><\/p>\n\n\n\n<p>\u591a\u304f\u306e\u5834\u5408\u3001\u5927\u91cf\u30c7\u30fc\u30bf\u306f\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u304b\u3089\u53d6\u5f97\u3057\u307e\u3059\u3002\u6700\u8fd1\u306e\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\uff08MySQL 5.7+\u3001PostgreSQL 9.2+\u306a\u3069\uff09\u306fJSON\u751f\u6210\u95a2\u6570\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u308b\u305f\u3081\u3001PHP\u3067\u306e\u51e6\u7406\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ MySQL\u306e\u4f8b\n$db = new PDO('mysql:host=localhost;dbname=testdb', 'user', 'password');\n$stmt = $db-&gt;query('SELECT JSON_OBJECT(\"id\", id, \"name\", name, \"created_at\", created_at) FROM users');\n\n\/\/ \u307e\u305f\u306f\u8907\u6570\u884c\u3092JSON\u306e\u914d\u5217\u3068\u3057\u3066\n$stmt = $db-&gt;query('SELECT JSON_ARRAYAGG(JSON_OBJECT(\"id\", id, \"name\", name)) FROM users');\n\n$result = $stmt-&gt;fetchColumn();\n\/\/ $result\u306f\u3059\u3067\u306bJSON\u5f62\u5f0f\n<\/pre>\n\n\n\n<p>\u9069\u5207\u306a\u6226\u7565\u3092\u9078\u629e\u3059\u308b\u3053\u3068\u3067\u3001\u30e1\u30e2\u30ea\u5236\u9650\u3084\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u554f\u984c\u3092\u56de\u907f\u3057\u306a\u304c\u3089\u3001\u5927\u304d\u306a\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u3082\u52b9\u7387\u7684\u306b\u51e6\u7406\u3067\u304d\u307e\u3059\u3002\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001json_encode\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-23\">json_encode\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316<\/h2>\n\n\n\n<p>API\u958b\u767a\u3084\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\u3068\u306e\u30c7\u30fc\u30bf\u9023\u643a\u306a\u3069\u3001\u5927\u91cf\u306e\u30c7\u30fc\u30bf\u3092JSON\u5f62\u5f0f\u3067\u6271\u3046\u5834\u9762\u3067\u306f\u3001<code>json_encode()<\/code>\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u91cd\u8981\u306a\u8981\u7d20\u3068\u306a\u308a\u307e\u3059\u3002\u9069\u5207\u306a\u6700\u9069\u5316\u30c6\u30af\u30cb\u30c3\u30af\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u5927\u5e45\u306a\u51e6\u7406\u901f\u5ea6\u306e\u5411\u4e0a\u3084\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u306e\u524a\u6e1b\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-24\">\u5927\u91cf\u30c7\u30fc\u30bf\u51e6\u7406\u6642\u306e\u52b9\u7387\u7684\u306a\u5b9f\u88c5\u65b9\u6cd5<\/h3>\n\n\n\n<p>\u5927\u91cf\u306e\u30c7\u30fc\u30bf\u3092JSON\u5f62\u5f0f\u306b\u30a8\u30f3\u30b3\u30fc\u30c9\u3059\u308b\u969b\u3001\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u3068\u51e6\u7406\u901f\u5ea6\u3092\u6700\u9069\u5316\u3059\u308b\u305f\u3081\u306e\u3044\u304f\u3064\u304b\u306e\u624b\u6cd5\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-25\">1. \u30b9\u30c8\u30ea\u30fc\u30df\u30f3\u30b0\u51e6\u7406\u306b\u3088\u308b\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u306e\u524a\u6e1b<\/h4>\n\n\n\n<p>\u5927\u91cf\u306e\u30c7\u30fc\u30bf\u3092\u4e00\u5ea6\u306b\u30e1\u30e2\u30ea\u306b\u8aad\u307f\u8fbc\u3080\u306e\u3067\u306f\u306a\u304f\u3001\u5c0f\u3055\u306a\u584a\uff08\u30c1\u30e3\u30f3\u30af\uff09\u306b\u5206\u3051\u3066\u51e6\u7406\u3059\u308b\u3053\u3068\u3067\u3001\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u3092\u5927\u5e45\u306b\u524a\u6e1b\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/**\n * \u5927\u91cf\u306e\u30c7\u30fc\u30bf\u3092\u542b\u3080\u914d\u5217\u3092\u30b9\u30c8\u30ea\u30fc\u30df\u30f3\u30b0\u65b9\u5f0f\u3067JSON\u30a8\u30f3\u30b3\u30fc\u30c9\u3057\u3066\u30d5\u30a1\u30a4\u30eb\u306b\u66f8\u304d\u8fbc\u3080\n * \n * @param array $largeArray \u5927\u91cf\u30c7\u30fc\u30bf\u3092\u542b\u3080\u914d\u5217\n * @param string $filePath \u51fa\u529b\u30d5\u30a1\u30a4\u30eb\u30d1\u30b9\n * @param int $chunkSize \u4e00\u5ea6\u306b\u51e6\u7406\u3059\u308b\u30a2\u30a4\u30c6\u30e0\u6570\n * @return bool \u51e6\u7406\u6210\u529f\u3057\u305f\u304b\u3069\u3046\u304b\n *\/\nfunction streamJsonEncode($largeArray, $filePath, $chunkSize = 1000) {\n    \/\/ \u30d5\u30a1\u30a4\u30eb\u30dd\u30a4\u30f3\u30bf\u3092\u958b\u304f\n    $fp = fopen($filePath, 'w');\n    if (!$fp) {\n        return false;\n    }\n    \n    \/\/ \u914d\u5217\u306e\u958b\u59cb\u3092\u66f8\u304d\u8fbc\u3080\n    fwrite($fp, '[');\n    \n    $totalItems = count($largeArray);\n    $processedItems = 0;\n    $isFirstChunk = true;\n    \n    \/\/ \u30c1\u30e3\u30f3\u30af\u5358\u4f4d\u3067\u51e6\u7406\n    for ($i = 0; $i &lt; $totalItems; $i += $chunkSize) {\n        \/\/ \u73fe\u5728\u306e\u30c1\u30e3\u30f3\u30af\u3092\u53d6\u5f97\n        $chunk = array_slice($largeArray, $i, $chunkSize);\n        \n        \/\/ \u30c1\u30e3\u30f3\u30af\u3092JSON\u30a8\u30f3\u30b3\u30fc\u30c9\n        $jsonChunk = json_encode($chunk);\n        \n        \/\/ []\u3092\u53d6\u308a\u9664\u304f (\u6700\u521d\u3068\u6700\u5f8c\u306e\u6587\u5b57)\n        $jsonChunk = substr($jsonChunk, 1, -1);\n        \n        \/\/ \u6700\u521d\u306e\u30c1\u30e3\u30f3\u30af\u4ee5\u5916\u306e\u5834\u5408\u306f\u30ab\u30f3\u30de\u3092\u8ffd\u52a0\n        if (!$isFirstChunk &amp;&amp; !empty($jsonChunk)) {\n            fwrite($fp, ',');\n        } elseif ($isFirstChunk) {\n            $isFirstChunk = false;\n        }\n        \n        \/\/ \u30c1\u30e3\u30f3\u30af\u3092\u66f8\u304d\u8fbc\u3080\n        fwrite($fp, $jsonChunk);\n        \n        \/\/ \u51e6\u7406\u6e08\u307f\u30a2\u30a4\u30c6\u30e0\u6570\u3092\u66f4\u65b0\n        $processedItems += count($chunk);\n        \n        \/\/ \u30e1\u30e2\u30ea\u3092\u89e3\u653e\n        unset($chunk);\n        unset($jsonChunk);\n    }\n    \n    \/\/ \u914d\u5217\u306e\u7d42\u4e86\u3092\u66f8\u304d\u8fbc\u3080\n    fwrite($fp, ']');\n    fclose($fp);\n    \n    return true;\n}\n\n\/\/ \u4f7f\u7528\u4f8b\n$largeArray = \/* \u5927\u91cf\u306e\u30c7\u30fc\u30bf\u3092\u542b\u3080\u914d\u5217 *\/;\nstreamJsonEncode($largeArray, 'output.json');\n<\/pre>\n\n\n\n<p>\u3053\u306e\u624b\u6cd5\u306e\u30e1\u30ea\u30c3\u30c8\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u3092\u5927\u5e45\u306b\u524a\u6e1b\u3067\u304d\u308b<\/li>\n\n\n\n<li>\u975e\u5e38\u306b\u5927\u304d\u306a\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\uff08\u6570\u767e\u4e07\u4ef6\u306a\u3069\uff09\u3067\u3082\u51e6\u7406\u53ef\u80fd<\/li>\n\n\n\n<li>\u30b9\u30af\u30ea\u30d7\u30c8\u306e\u5b9f\u884c\u6642\u9593\u304c\u9577\u304f\u306a\u3063\u3066\u3082\u90e8\u5206\u7684\u306b\u30c7\u30fc\u30bf\u304c\u4fdd\u5b58\u3055\u308c\u308b<\/li>\n<\/ul>\n\n\n\n<p>\u305f\u3060\u3057\u3001\u4e00\u5ea6\u306b\u5168\u4f53\u3092\u51e6\u7406\u3059\u308b\u5834\u5408\u3068\u6bd4\u3079\u3066\u82e5\u5e72\u306e\u901f\u5ea6\u4f4e\u4e0b\u304c\u751f\u3058\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-26\">2. \u30b8\u30a7\u30cd\u30ec\u30fc\u30bf\u3092\u6d3b\u7528\u3057\u305f\u30e1\u30e2\u30ea\u52b9\u7387\u306e\u826f\u3044\u30c7\u30fc\u30bf\u51e6\u7406<\/h4>\n\n\n\n<p>PHP 5.5.0\u4ee5\u964d\u3067\u306f\u3001\u30b8\u30a7\u30cd\u30ec\u30fc\u30bf\u3092\u4f7f\u7528\u3057\u3066\u30e1\u30e2\u30ea\u52b9\u7387\u306e\u826f\u3044\u30c7\u30fc\u30bf\u51e6\u7406\u304c\u53ef\u80fd\u3067\u3059\u3002\u7279\u306b\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3084\u30d5\u30a1\u30a4\u30eb\u304b\u3089\u30c7\u30fc\u30bf\u3092\u8aad\u307f\u8fbc\u3080\u5834\u5408\u306b\u52b9\u679c\u7684\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/**\n * \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u304b\u3089\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\u3059\u308b\u30b8\u30a7\u30cd\u30ec\u30fc\u30bf\n * \n * @param PDO $pdo PDO\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\n * @param string $query \u30af\u30a8\u30ea\n * @param array $params \u30af\u30a8\u30ea\u30d1\u30e9\u30e1\u30fc\u30bf\n * @return Generator \u30c7\u30fc\u30bf\u306e\u884c\u3092\u9806\u6b21\u751f\u6210\n *\/\nfunction getDataGenerator(PDO $pdo, $query, $params = []) {\n    $stmt = $pdo-&gt;prepare($query);\n    $stmt-&gt;execute($params);\n    \n    while ($row = $stmt-&gt;fetch(PDO::FETCH_ASSOC)) {\n        yield $row;\n    }\n}\n\n\/**\n * \u30b8\u30a7\u30cd\u30ec\u30fc\u30bf\u304b\u3089\u306e\u30c7\u30fc\u30bf\u3092JSON\u5f62\u5f0f\u3067\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306b\u51fa\u529b\n *\n * @param Generator $generator \u30c7\u30fc\u30bf\u30b8\u30a7\u30cd\u30ec\u30fc\u30bf\n * @param int $bufferSize \u30d0\u30c3\u30d5\u30a1\u30b5\u30a4\u30ba\n *\/\nfunction outputJsonStream($generator, $bufferSize = 100) {\n    header('Content-Type: application\/json');\n    \n    echo '[';\n    \n    $isFirst = true;\n    $buffer = [];\n    $count = 0;\n    \n    foreach ($generator as $item) {\n        $buffer[] = $item;\n        $count++;\n        \n        \/\/ \u30d0\u30c3\u30d5\u30a1\u304c\u4e00\u5b9a\u30b5\u30a4\u30ba\u306b\u306a\u3063\u305f\u3089\u51fa\u529b\n        if ($count &gt;= $bufferSize) {\n            $json = json_encode($buffer);\n            \/\/ []\u3092\u53d6\u308a\u9664\u304f\n            $json = substr($json, 1, -1);\n            \n            if (!$isFirst) {\n                echo ',';\n            }\n            \n            echo $json;\n            \n            \/\/ \u30d0\u30c3\u30d5\u30a1\u3092\u30af\u30ea\u30a2\n            $buffer = [];\n            $count = 0;\n            \n            if ($isFirst) {\n                $isFirst = false;\n            }\n            \n            \/\/ \u51fa\u529b\u3092\u30d5\u30e9\u30c3\u30b7\u30e5\n            flush();\n            ob_flush();\n        }\n    }\n    \n    \/\/ \u6b8b\u308a\u306e\u30d0\u30c3\u30d5\u30a1\u3092\u51fa\u529b\n    if (!empty($buffer)) {\n        $json = json_encode($buffer);\n        $json = substr($json, 1, -1);\n        \n        if (!$isFirst) {\n            echo ',';\n        }\n        \n        echo $json;\n    }\n    \n    echo ']';\n}\n\n\/\/ \u4f7f\u7528\u4f8b\n$pdo = new PDO('mysql:host=localhost;dbname=testdb', 'username', 'password');\n$generator = getDataGenerator($pdo, 'SELECT * FROM large_table');\noutputJsonStream($generator);\n<\/pre>\n\n\n\n<p>\u3053\u306e\u624b\u6cd5\u306e\u30e1\u30ea\u30c3\u30c8\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u304c\u975e\u5e38\u306b\u5c11\u306a\u3044<\/li>\n\n\n\n<li>\u51e6\u7406\u4e2d\u306b\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3078\u306e\u5fdc\u7b54\u304c\u59cb\u307e\u308b\u305f\u3081\u3001\u4f53\u611f\u901f\u5ea6\u304c\u5411\u4e0a<\/li>\n\n\n\n<li>\u30b3\u30fc\u30c9\u306e\u53ef\u8aad\u6027\u304c\u9ad8\u304f\u3001\u4fdd\u5b88\u6027\u306b\u512a\u308c\u308b<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-27\">3. \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u30cd\u30a4\u30c6\u30a3\u30d6JSON\u6a5f\u80fd\u306e\u6d3b\u7528<\/h4>\n\n\n\n<p>\u6700\u8fd1\u306e\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\uff08MySQL 5.7+\u3001PostgreSQL 9.4+\u3001SQLServer 2016+\u306a\u3069\uff09\u306f\u3001\u30cd\u30a4\u30c6\u30a3\u30d6\u306eJSON\u751f\u6210\u6a5f\u80fd\u3092\u5099\u3048\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u3089\u3092\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001PHP\u3067\u306e\u51e6\u7406\u8ca0\u8377\u3092\u8efd\u6e1b\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/**\n * \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u30cd\u30a4\u30c6\u30a3\u30d6JSON\u6a5f\u80fd\u3092\u4f7f\u7528\u3057\u3066\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\n *\n * @param PDO $pdo PDO\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\n * @return string JSON\u6587\u5b57\u5217\n *\/\nfunction getJsonFromDatabase(PDO $pdo) {\n    \/\/ MySQL\u306e\u4f8b (5.7+)\n    $stmt = $pdo-&gt;query(\n        'SELECT JSON_ARRAYAGG(\n            JSON_OBJECT(\n                \"id\", id, \n                \"name\", name, \n                \"email\", email, \n                \"created_at\", DATE_FORMAT(created_at, \"%Y-%m-%d\")\n            )\n        ) AS data\n        FROM users'\n    );\n    \n    $result = $stmt-&gt;fetchColumn();\n    return $result ?: '[]';\n    \n    \/* PostgreSQL\u306e\u4f8b (9.4+)\n    $stmt = $pdo-&gt;query(\n        'SELECT array_to_json(array_agg(row_to_json(t)))\n         FROM (SELECT id, name, email, created_at::text FROM users) t'\n    );\n    *\/\n}\n\n\/\/ \u4f7f\u7528\u4f8b\n$pdo = new PDO('mysql:host=localhost;dbname=testdb', 'username', 'password');\n$json = getJsonFromDatabase($pdo);\necho $json;\n<\/pre>\n\n\n\n<p>\u3053\u306e\u624b\u6cd5\u306e\u30e1\u30ea\u30c3\u30c8\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u30cd\u30a4\u30c6\u30a3\u30d6\u6a5f\u80fd\u3092\u4f7f\u3063\u305f\u9ad8\u901f\u306a\u51e6\u7406<\/li>\n\n\n\n<li>PHP\u306e\u30e1\u30e2\u30ea\u6d88\u8cbb\u304c\u6700\u5c0f\u9650<\/li>\n\n\n\n<li>\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u5074\u3067\u5fc5\u8981\u306a\u30c7\u30fc\u30bf\u306e\u307f\u3092\u9078\u629e\u3067\u304d\u308b<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-28\">\u751f\u6210\u3055\u308c\u308bJSON\u30b5\u30a4\u30ba\u306e\u6700\u5c0f\u5316\u30c6\u30af\u30cb\u30c3\u30af<\/h3>\n\n\n\n<p>JSON\u30c7\u30fc\u30bf\u306e\u30b5\u30a4\u30ba\u3092\u6700\u5c0f\u5316\u3059\u308b\u3053\u3068\u3067\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u8ee2\u9001\u6642\u9593\u3092\u524a\u6e1b\u3057\u3001\u5168\u4f53\u7684\u306a\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u5411\u4e0a\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-29\">1. \u4e0d\u8981\u306a\u30c7\u30fc\u30bf\u306e\u9664\u5916<\/h4>\n\n\n\n<p>\u30c7\u30fc\u30bf\u30b5\u30a4\u30ba\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u308b\u3082\u3063\u3068\u3082\u52b9\u679c\u7684\u306a\u65b9\u6cd5\u306f\u3001\u4e0d\u8981\u306a\u30c7\u30fc\u30bf\u3092\u9664\u5916\u3059\u308b\u3053\u3068\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/**\n * \u5fc5\u8981\u306a\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u307f\u3092\u542b\u3080\u30c7\u30fc\u30bf\u3092\u751f\u6210\n *\n * @param array $users \u5168\u30e6\u30fc\u30b6\u30fc\u30c7\u30fc\u30bf\n * @param array $fields \u5fc5\u8981\u306a\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u914d\u5217\n * @return array \u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3055\u308c\u305f\u30c7\u30fc\u30bf\n *\/\nfunction filterFields($users, $fields) {\n    $result = [];\n    \n    foreach ($users as $user) {\n        $filteredUser = [];\n        \n        foreach ($fields as $field) {\n            if (isset($user[$field])) {\n                $filteredUser[$field] = $user[$field];\n            }\n        }\n        \n        $result[] = $filteredUser;\n    }\n    \n    return $result;\n}\n\n\/\/ \u4f7f\u7528\u4f8b\n$allUsers = \/* \u5168\u30e6\u30fc\u30b6\u30fc\u30c7\u30fc\u30bf *\/;\n$requiredFields = ['id', 'name', 'email']; \/\/ \u5fc5\u8981\u306a\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u307f\n$filteredUsers = filterFields($allUsers, $requiredFields);\n$json = json_encode($filteredUsers);\n<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-30\">2. \u30aa\u30d7\u30b7\u30e7\u30f3\u30d5\u30e9\u30b0\u306e\u6700\u9069\u5316<\/h4>\n\n\n\n<p><code>json_encode()<\/code>\u306e\u30aa\u30d7\u30b7\u30e7\u30f3\u30d5\u30e9\u30b0\u3092\u9069\u5207\u306b\u9078\u629e\u3059\u308b\u3053\u3068\u3067\u3001JSON\u30b5\u30a4\u30ba\u3092\u524a\u6e1b\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30c7\u30d5\u30a9\u30eb\u30c8\uff08\u6574\u5f62\u306a\u3057\u3001Unicode\u30a8\u30b9\u30b1\u30fc\u30d7\u3042\u308a\uff09\n$json1 = json_encode($data);\n\n\/\/ \u672c\u756a\u74b0\u5883\u5411\u3051\uff08\u6700\u5c0f\u30b5\u30a4\u30ba\uff09\n$json2 = json_encode($data, JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE);\n\n\/\/ \u958b\u767a\u74b0\u5883\u5411\u3051\uff08\u8aad\u307f\u3084\u3059\u3055\u91cd\u8996\uff09\n$json3 = json_encode($data, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE);\n\n\/\/ \u30b5\u30a4\u30ba\u6bd4\u8f03\necho \"\u30c7\u30d5\u30a9\u30eb\u30c8: \" . strlen($json1) . \" bytes\\n\";\necho \"\u6700\u5c0f\u5316: \" . strlen($json2) . \" bytes\\n\";\necho \"\u6574\u5f62\u6e08\u307f: \" . strlen($json3) . \" bytes\\n\";\n<\/pre>\n\n\n\n<p><code>JSON_UNESCAPED_SLASHES<\/code>\u3068<code>JSON_UNESCAPED_UNICODE<\/code>\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u7279\u306bURL\u3084\u65e5\u672c\u8a9e\u3092\u542b\u3080\u30c7\u30fc\u30bf\u306e\u30b5\u30a4\u30ba\u3092\u5927\u5e45\u306b\u524a\u6e1b\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-31\">3. \u5727\u7e2e\u306e\u6d3b\u7528<\/h4>\n\n\n\n<p>\u5927\u304d\u306aJSON\u30c7\u30fc\u30bf\u306e\u5834\u5408\u3001HTTP\u30ec\u30d9\u30eb\u3067\u306e\u5727\u7e2e\u304c\u975e\u5e38\u306b\u52b9\u679c\u7684\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/**\n * \u5727\u7e2e\u3057\u305fJSON\u30ec\u30b9\u30dd\u30f3\u30b9\u3092\u9001\u4fe1\n *\n * @param mixed $data JSON\u30a8\u30f3\u30b3\u30fc\u30c9\u3059\u308b\u30c7\u30fc\u30bf\n * @param int $options json_encode\u306e\u30aa\u30d7\u30b7\u30e7\u30f3\n *\/\nfunction sendCompressedJson($data, $options = 0) {\n    $json = json_encode($data, $options);\n    \n    \/\/ \u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304c\u5727\u7e2e\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u308b\u304b\u78ba\u8a8d\n    $acceptEncoding = isset($_SERVER['HTTP_ACCEPT_ENCODING']) ? \n                      $_SERVER['HTTP_ACCEPT_ENCODING'] : '';\n    \n    \/\/ \u5727\u7e2e\u65b9\u5f0f\u3092\u9078\u629e\n    if (strpos($acceptEncoding, 'gzip') !== false) {\n        header('Content-Encoding: gzip');\n        $compressed = gzencode($json, 9); \/\/ \u6700\u9ad8\u5727\u7e2e\u30ec\u30d9\u30eb\n        header('Content-Length: ' . strlen($compressed));\n        echo $compressed;\n    } elseif (strpos($acceptEncoding, 'deflate') !== false) {\n        header('Content-Encoding: deflate');\n        $compressed = gzdeflate($json, 9);\n        header('Content-Length: ' . strlen($compressed));\n        echo $compressed;\n    } else {\n        \/\/ \u5727\u7e2e\u306a\u3057\n        header('Content-Length: ' . strlen($json));\n        echo $json;\n    }\n}\n\n\/\/ \u4f7f\u7528\u4f8b\nheader('Content-Type: application\/json');\n$data = \/* \u5927\u91cf\u306e\u30c7\u30fc\u30bf *\/;\nsendCompressedJson($data, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);\n<\/pre>\n\n\n\n<p>\u5727\u7e2e\u306b\u3088\u3063\u3066\u3001\u30c7\u30fc\u30bf\u30b5\u30a4\u30ba\u304c70\u301c90%\u524a\u6e1b\u3055\u308c\u308b\u3053\u3068\u3082\u73cd\u3057\u304f\u3042\u308a\u307e\u305b\u3093\u3002\u7279\u306b\u30c6\u30ad\u30b9\u30c8\u30c7\u30fc\u30bf\u304c\u591a\u3044\u5834\u5408\u306b\u52b9\u679c\u7684\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-32\">\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u6d3b\u7528\u3057\u305f\u51e6\u7406\u901f\u5ea6\u306e\u6539\u5584<\/h3>\n\n\n\n<p>\u7e70\u308a\u8fd4\u3057\u30a2\u30af\u30bb\u30b9\u3055\u308c\u308bJSON\u30c7\u30fc\u30bf\u3092\u30ad\u30e3\u30c3\u30b7\u30e5\u3059\u308b\u3053\u3068\u3067\u3001\u51e6\u7406\u6642\u9593\u3092\u5927\u5e45\u306b\u77ed\u7e2e\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-33\">1. \u30b5\u30fc\u30d0\u30fc\u30b5\u30a4\u30c9\u30ad\u30e3\u30c3\u30b7\u30e5<\/h4>\n\n\n\n<p>\u983b\u7e41\u306b\u5909\u66f4\u3055\u308c\u306a\u3044\u30c7\u30fc\u30bf\u306e\u5834\u5408\u3001\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u6bce\u56de\u306e\u30a8\u30f3\u30b3\u30fc\u30c9\u51e6\u7406\u3092\u56de\u907f\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/**\n * JSON\u30c7\u30fc\u30bf\u3092\u30ad\u30e3\u30c3\u30b7\u30e5\u3059\u308b\u30b7\u30f3\u30d7\u30eb\u306a\u95a2\u6570\n *\n * @param string $cacheKey \u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u30ad\u30fc\n * @param callable $dataCallback \u30c7\u30fc\u30bf\u3092\u751f\u6210\u3059\u308b\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\n * @param int $ttl \u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u6709\u52b9\u671f\u9593\uff08\u79d2\uff09\n * @return string JSON\u30c7\u30fc\u30bf\n *\/\nfunction getCachedJson($cacheKey, $dataCallback, $ttl = 3600) {\n    $cacheFile = sys_get_temp_dir() . '\/json_cache_' . md5($cacheKey) . '.json';\n    \n    \/\/ \u30ad\u30e3\u30c3\u30b7\u30e5\u304c\u6709\u52b9\u304b\u30c1\u30a7\u30c3\u30af\n    if (file_exists($cacheFile) &amp;&amp; (time() - filemtime($cacheFile) &lt; $ttl)) {\n        \/\/ \u30ad\u30e3\u30c3\u30b7\u30e5\u304b\u3089\u8aad\u307f\u8fbc\u307f\n        return file_get_contents($cacheFile);\n    }\n    \n    \/\/ \u30c7\u30fc\u30bf\u3092\u751f\u6210\n    $data = $dataCallback();\n    $json = json_encode($data, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);\n    \n    \/\/ \u30ad\u30e3\u30c3\u30b7\u30e5\u306b\u4fdd\u5b58\n    file_put_contents($cacheFile, $json, LOCK_EX);\n    \n    return $json;\n}\n\n\/\/ \u4f7f\u7528\u4f8b\n$userId = 123;\n$json = getCachedJson(\n    \"user_data_{$userId}\",\n    function() use ($userId) {\n        \/\/ \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u304b\u3089\u30e6\u30fc\u30b6\u30fc\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\u3059\u308b\u51e6\u7406\n        $pdo = new PDO('mysql:host=localhost;dbname=testdb', 'username', 'password');\n        $stmt = $pdo-&gt;prepare('SELECT * FROM users WHERE id = ?');\n        $stmt-&gt;execute([$userId]);\n        return $stmt-&gt;fetch(PDO::FETCH_ASSOC);\n    },\n    1800 \/\/ 30\u5206\u9593\u30ad\u30e3\u30c3\u30b7\u30e5\n);\n\nheader('Content-Type: application\/json');\necho $json;\n<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-34\">2. APCu\u3001Memcached\u3001Redis\u306a\u3069\u306e\u9ad8\u901f\u30ad\u30e3\u30c3\u30b7\u30e5\u30b7\u30b9\u30c6\u30e0\u306e\u6d3b\u7528<\/h4>\n\n\n\n<p>\u30d5\u30a1\u30a4\u30eb\u30d9\u30fc\u30b9\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u3088\u308a\u3082\u9ad8\u901f\u306a\u30e1\u30e2\u30ea\u30d9\u30fc\u30b9\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u30b7\u30b9\u30c6\u30e0\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u3055\u3089\u306a\u308b\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u5411\u4e0a\u304c\u898b\u8fbc\u3081\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/**\n * APCu\u3092\u4f7f\u7528\u3057\u305fJSON\u30c7\u30fc\u30bf\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\n *\n * @param string $key \u30ad\u30e3\u30c3\u30b7\u30e5\u30ad\u30fc\n * @param callable $callback \u30c7\u30fc\u30bf\u3092\u751f\u6210\u3059\u308b\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\n * @param int $ttl \u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u6709\u52b9\u671f\u9593\uff08\u79d2\uff09\n * @return string JSON\u30c7\u30fc\u30bf\n *\/\nfunction getApuCachedJson($key, $callback, $ttl = 3600) {\n    $cacheKey = 'json_' . md5($key);\n    \n    \/\/ \u30ad\u30e3\u30c3\u30b7\u30e5\u304b\u3089\u53d6\u5f97\u3092\u8a66\u307f\u308b\n    $success = false;\n    $cached = apcu_fetch($cacheKey, $success);\n    \n    if ($success) {\n        return $cached;\n    }\n    \n    \/\/ \u30ad\u30e3\u30c3\u30b7\u30e5\u304c\u306a\u3044\u5834\u5408\u3001\u30c7\u30fc\u30bf\u3092\u751f\u6210\n    $data = $callback();\n    $json = json_encode($data, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);\n    \n    \/\/ \u30ad\u30e3\u30c3\u30b7\u30e5\u306b\u4fdd\u5b58\n    apcu_store($cacheKey, $json, $ttl);\n    \n    return $json;\n}\n\n\/\/ \u4f7f\u7528\u4f8b\uff08Redis\u306e\u5834\u5408\uff09\nfunction getRedisCachedJson($redis, $key, $callback, $ttl = 3600) {\n    $cacheKey = 'json_' . md5($key);\n    \n    \/\/ Redis\u304b\u3089\u53d6\u5f97\u3092\u8a66\u307f\u308b\n    $cached = $redis-&gt;get($cacheKey);\n    \n    if ($cached) {\n        return $cached;\n    }\n    \n    \/\/ \u30ad\u30e3\u30c3\u30b7\u30e5\u304c\u306a\u3044\u5834\u5408\u3001\u30c7\u30fc\u30bf\u3092\u751f\u6210\n    $data = $callback();\n    $json = json_encode($data, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);\n    \n    \/\/ Redis\u306b\u4fdd\u5b58\n    $redis-&gt;setex($cacheKey, $ttl, $json);\n    \n    return $json;\n}\n<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-35\">3. HTTP\u5c64\u3067\u306e\u30ad\u30e3\u30c3\u30b7\u30e5<\/h4>\n\n\n\n<p>\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5074\u3084CDN\u3067\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u5229\u7528\u3059\u308b\u305f\u3081\u306b\u3001\u9069\u5207\u306aHTTP\u30d8\u30c3\u30c0\u30fc\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/**\n * HTTP\u30ad\u30e3\u30c3\u30b7\u30e5\u30d8\u30c3\u30c0\u30fc\u3092\u8a2d\u5b9a\u3057\u3066JSON\u3092\u51fa\u529b\n *\n * @param mixed $data JSON\u30a8\u30f3\u30b3\u30fc\u30c9\u3059\u308b\u30c7\u30fc\u30bf\n * @param int $maxAge \u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u6700\u5927\u6709\u52b9\u671f\u9593\uff08\u79d2\uff09\n *\/\nfunction outputCacheableJson($data, $maxAge = 3600) {\n    $json = json_encode($data, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);\n    \n    \/\/ ETL\u30bf\u30b0\u3092\u751f\u6210\uff08\u30b3\u30f3\u30c6\u30f3\u30c4\u306e\u30cf\u30c3\u30b7\u30e5\uff09\n    $etag = '\"' . md5($json) . '\"';\n    \n    \/\/ \u30ad\u30e3\u30c3\u30b7\u30e5\u30d8\u30c3\u30c0\u30fc\u3092\u8a2d\u5b9a\n    header('Content-Type: application\/json');\n    header('Cache-Control: public, max-age=' . $maxAge);\n    header('ETag: ' . $etag);\n    \n    \/\/ \u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304c\u9001\u4fe1\u3057\u305fETL\u30bf\u30b0\u3092\u30c1\u30a7\u30c3\u30af\n    if (isset($_SERVER['HTTP_IF_NONE_MATCH']) &amp;&amp; $_SERVER['HTTP_IF_NONE_MATCH'] === $etag) {\n        \/\/ \u30b3\u30f3\u30c6\u30f3\u30c4\u306f\u5909\u66f4\u3055\u308c\u3066\u3044\u306a\u3044\n        header('HTTP\/1.1 304 Not Modified');\n        exit;\n    }\n    \n    echo $json;\n}\n<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-36\">4. \u6761\u4ef6\u4ed8\u304d\u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u66f4\u65b0<\/h4>\n\n\n\n<p>\u30c7\u30fc\u30bf\u304c\u5909\u66f4\u3055\u308c\u305f\u5834\u5408\u306b\u306e\u307f\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u66f4\u65b0\u3059\u308b\u3053\u3068\u3067\u3001\u4e0d\u8981\u306a\u51e6\u7406\u3092\u524a\u6e1b\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/**\n * \u6761\u4ef6\u4ed8\u304d\u30ad\u30e3\u30c3\u30b7\u30e5\u66f4\u65b0\n *\n * @param string $cacheKey \u30ad\u30e3\u30c3\u30b7\u30e5\u30ad\u30fc\n * @param callable $dataCallback \u30c7\u30fc\u30bf\u3092\u751f\u6210\u3059\u308b\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\n * @param callable $modifiedCallback \u30c7\u30fc\u30bf\u304c\u66f4\u65b0\u3055\u308c\u305f\u304b\u30c1\u30a7\u30c3\u30af\u3059\u308b\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\n * @return string \u30ad\u30e3\u30c3\u30b7\u30e5\u3055\u308c\u305fJSON\u307e\u305f\u306f\u65b0\u3057\u3044JSON\n *\/\nfunction getConditionalCachedJson($cacheKey, $dataCallback, $modifiedCallback) {\n    $cacheFile = sys_get_temp_dir() . '\/json_cache_' . md5($cacheKey) . '.json';\n    $metaFile = $cacheFile . '.meta';\n    \n    $lastModified = null;\n    if (file_exists($metaFile)) {\n        $lastModified = file_get_contents($metaFile);\n    }\n    \n    \/\/ \u30c7\u30fc\u30bf\u304c\u66f4\u65b0\u3055\u308c\u305f\u304b\u30c1\u30a7\u30c3\u30af\n    $currentModified = $modifiedCallback($lastModified);\n    \n    if ($lastModified !== null &amp;&amp; $currentModified === $lastModified &amp;&amp; file_exists($cacheFile)) {\n        \/\/ \u30c7\u30fc\u30bf\u306b\u5909\u66f4\u304c\u306a\u3044\u5834\u5408\u306f\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u4f7f\u7528\n        return file_get_contents($cacheFile);\n    }\n    \n    \/\/ \u65b0\u3057\u3044\u30c7\u30fc\u30bf\u3092\u751f\u6210\n    $data = $dataCallback();\n    $json = json_encode($data, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);\n    \n    \/\/ \u30ad\u30e3\u30c3\u30b7\u30e5\u3068\u6700\u7d42\u66f4\u65b0\u60c5\u5831\u3092\u4fdd\u5b58\n    file_put_contents($cacheFile, $json, LOCK_EX);\n    file_put_contents($metaFile, $currentModified, LOCK_EX);\n    \n    return $json;\n}\n\n\/\/ \u4f7f\u7528\u4f8b\n$json = getConditionalCachedJson(\n    'products_list',\n    function() {\n        \/\/ \u5168\u5546\u54c1\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\n        $pdo = new PDO('mysql:host=localhost;dbname=testdb', 'username', 'password');\n        $stmt = $pdo-&gt;query('SELECT * FROM products');\n        return $stmt-&gt;fetchAll(PDO::FETCH_ASSOC);\n    },\n    function($lastModified) {\n        \/\/ \u6700\u7d42\u66f4\u65b0\u65e5\u6642\u3092\u53d6\u5f97\n        $pdo = new PDO('mysql:host=localhost;dbname=testdb', 'username', 'password');\n        $stmt = $pdo-&gt;query('SELECT MAX(updated_at) FROM products');\n        $currentModified = $stmt-&gt;fetchColumn();\n        return $currentModified;\n    }\n);\n<\/pre>\n\n\n\n<p>\u9069\u5207\u306a\u30ad\u30e3\u30c3\u30b7\u30e5\u6226\u7565\u3092\u9078\u629e\u3059\u308b\u3053\u3068\u3067\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u5927\u5e45\u306b\u5411\u4e0a\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u7279\u306b\u9ad8\u8ca0\u8377\u306aWeb\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u306f\u3001\u3053\u308c\u3089\u306e\u6700\u9069\u5316\u6280\u8853\u304c\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u4ee5\u4e0a\u306e\u6700\u9069\u5316\u624b\u6cd5\u3092\u9069\u7528\u3059\u308b\u3053\u3068\u3067\u3001<code>json_encode()<\/code>\u3092\u4f7f\u7528\u3059\u308b\u969b\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u5927\u5e45\u306b\u5411\u4e0a\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u958b\u767a\u3059\u308b\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u7279\u6027\u3084\u8981\u4ef6\u306b\u5408\u308f\u305b\u3066\u3001\u6700\u9069\u306a\u65b9\u6cd5\u3092\u9078\u629e\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-37\">json_encode\u3092\u4f7f\u3063\u305f7\u3064\u306e\u5b9f\u8df5\u30d1\u30bf\u30fc\u30f3<\/h2>\n\n\n\n<p>\u3053\u308c\u307e\u3067\u306f<code>json_encode()<\/code>\u95a2\u6570\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\u304b\u3089\u5fdc\u7528\u30c6\u30af\u30cb\u30c3\u30af\u307e\u3067\u89e3\u8aac\u3057\u3066\u304d\u307e\u3057\u305f\u3002\u3053\u3053\u304b\u3089\u306f\u3001\u5b9f\u969b\u306e\u958b\u767a\u73fe\u5834\u3067\u3088\u304f\u4f7f\u308f\u308c\u308b\u5177\u4f53\u7684\u306a\u5b9f\u88c5\u30d1\u30bf\u30fc\u30f3\u30927\u3064\u7d39\u4ecb\u3057\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u30d1\u30bf\u30fc\u30f3\u3092\u5b66\u3076\u3053\u3068\u3067\u3001\u3055\u307e\u3056\u307e\u306a\u30b7\u30fc\u30f3\u3067<code>json_encode()<\/code>\u3092\u6d3b\u7528\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-38\">RESTful API\u30ec\u30b9\u30dd\u30f3\u30b9\u306e\u4f5c\u6210<\/h3>\n\n\n\n<p>\u73fe\u4ee3\u306eWeb\u958b\u767a\u3067\u306f\u3001RESTful API\u306e\u4f5c\u6210\u306f\u6b20\u304b\u305b\u306a\u3044\u8981\u7d20\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002PHP\u3067\u5b9f\u88c5\u3059\u308bAPI\u30a8\u30f3\u30c9\u30dd\u30a4\u30f3\u30c8\u306f\u3001JSON\u5f62\u5f0f\u3067\u30ec\u30b9\u30dd\u30f3\u30b9\u3092\u8fd4\u3059\u3053\u3068\u304c\u307b\u3068\u3093\u3069\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/**\n * Ajax\u30ea\u30af\u30a8\u30b9\u30c8\u7528\u306e\u30ec\u30b9\u30dd\u30f3\u30b9\u751f\u6210\u95a2\u6570\n *\n * @param mixed $data \u30ec\u30b9\u30dd\u30f3\u30b9\u30c7\u30fc\u30bf\n * @param string $message \u30e1\u30c3\u30bb\u30fc\u30b8\n * @param bool $error \u30a8\u30e9\u30fc\u30d5\u30e9\u30b0\n * @return void\n *\/\nfunction ajaxResponse($data = null, $message = '', $error = false) {\n    \/\/ Ajax\u30ea\u30af\u30a8\u30b9\u30c8\u304b\u3089\u306e\u307f\u30a2\u30af\u30bb\u30b9\u53ef\u80fd\u306b\u3059\u308b\uff08\u30aa\u30d7\u30b7\u30e7\u30f3\uff09\n    if (!empty($_SERVER['HTTP_X_REQUESTED_WITH']) &amp;&amp; \n        strtolower($_SERVER['HTTP_X_REQUESTED_WITH']) != 'xmlhttprequest') {\n        header('HTTP\/1.1 403 Forbidden');\n        die('Direct access not allowed.');\n    }\n    \n    $response = [\n        'error' =&gt; $error,\n        'message' =&gt; $message,\n        'data' =&gt; $data\n    ];\n    \n    header('Content-Type: application\/json; charset=utf-8');\n    echo json_encode($response, JSON_UNESCAPED_UNICODE);\n    exit;\n}\n\n\/\/ \u4f7f\u7528\u4f8b\uff1a\u30d5\u30a9\u30fc\u30e0\u51e6\u7406\nif ($_SERVER['REQUEST_METHOD'] === 'POST') {\n    \/\/ POST\u30c7\u30fc\u30bf\u306e\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\n    $errors = [];\n    \n    if (empty($_POST['name'])) {\n        $errors[] = '\u540d\u524d\u3092\u5165\u529b\u3057\u3066\u304f\u3060\u3055\u3044\u3002';\n    }\n    \n    if (empty($_POST['email']) || !filter_var($_POST['email'], FILTER_VALIDATE_EMAIL)) {\n        $errors[] = '\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u304c\u7121\u52b9\u3067\u3059\u3002';\n    }\n    \n    if (!empty($errors)) {\n        ajaxResponse($errors, '\u5165\u529b\u30a8\u30e9\u30fc\u304c\u3042\u308a\u307e\u3059\u3002', true);\n    }\n    \n    \/\/ \u30d5\u30a9\u30fc\u30e0\u30c7\u30fc\u30bf\u3092\u51e6\u7406\n    try {\n        \/\/ \u30c7\u30fc\u30bf\u306e\u51e6\u7406\uff08\u4f8b\uff1a\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u4fdd\u5b58\uff09\n        $userData = [\n            'id' =&gt; 123,\n            'name' =&gt; $_POST['name'],\n            'email' =&gt; $_POST['email'],\n            'created_at' =&gt; date('Y-m-d H:i:s')\n        ];\n        \n        ajaxResponse($userData, '\u767b\u9332\u304c\u5b8c\u4e86\u3057\u307e\u3057\u305f\u3002');\n    } catch (Exception $e) {\n        ajaxResponse(null, '\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u307e\u3057\u305f\uff1a' . $e-&gt;getMessage(), true);\n    }\n}\n<\/pre>\n\n\n\n<p>\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5074\uff08JavaScript\uff09\u306e\u5b9f\u88c5\u4f8b\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ jQuery\u4f7f\u7528\u4f8b\n$(\"#userForm\").submit(function(e) {\n    e.preventDefault();\n    \n    $.ajax({\n        url: 'process.php',\n        type: 'POST',\n        data: $(this).serialize(),\n        dataType: 'json',\n        success: function(response) {\n            if (response.error) {\n                \/\/ \u30a8\u30e9\u30fc\u51e6\u7406\n                alert(response.message);\n                console.log(response.data); \/\/ \u30a8\u30e9\u30fc\u8a73\u7d30\n            } else {\n                \/\/ \u6210\u529f\u51e6\u7406\n                alert(response.message);\n                console.log(response.data); \/\/ \u51e6\u7406\u7d50\u679c\u30c7\u30fc\u30bf\n            }\n        },\n        error: function() {\n            alert('\u901a\u4fe1\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u307e\u3057\u305f');\n        }\n    });\n});\n\n\/\/ Fetch API\u4f7f\u7528\u4f8b\ndocument.getElementById('userForm').addEventListener('submit', function(e) {\n    e.preventDefault();\n    \n    const formData = new FormData(this);\n    \n    fetch('process.php', {\n        method: 'POST',\n        body: formData\n    })\n    .then(response =&gt; response.json())\n    .then(data =&gt; {\n        if (data.error) {\n            \/\/ \u30a8\u30e9\u30fc\u51e6\u7406\n            alert(data.message);\n        } else {\n            \/\/ \u6210\u529f\u51e6\u7406\n            alert(data.message);\n        }\n    })\n    .catch(error =&gt; {\n        console.error('Error:', error);\n        alert('\u901a\u4fe1\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u307e\u3057\u305f');\n    });\n});\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-39\">\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3078\u306eJSON\u5f62\u5f0f\u3067\u306e\u4fdd\u5b58<\/h3>\n\n\n\n<p>\u6700\u8fd1\u306e\u30ea\u30ec\u30fc\u30b7\u30e7\u30ca\u30eb\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\uff08MySQL 5.7+\u3001PostgreSQL 9.4+\u306a\u3069\uff09\u3067\u306f\u3001JSON\u578b\u306e\u30ab\u30e9\u30e0\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u304a\u308a\u3001\u69cb\u9020\u5316\u30c7\u30fc\u30bf\u3092\u67d4\u8edf\u306b\u4fdd\u5b58\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u306f\u30b9\u30ad\u30fc\u30de\u306e\u5909\u66f4\u304c\u983b\u7e41\u306b\u767a\u751f\u3059\u308b\u30c7\u30fc\u30bf\u3084\u3001\u8907\u96d1\u306a\u968e\u5c64\u69cb\u9020\u3092\u6301\u3064\u30c7\u30fc\u30bf\u3092\u6271\u3046\u5834\u5408\u306b\u7279\u306b\u4fbf\u5229\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/**\n * \u8a2d\u5b9a\u30c7\u30fc\u30bf\u3092JSON\u5f62\u5f0f\u3067\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u4fdd\u5b58\u3059\u308b\n *\n * @param PDO $pdo PDO\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\n * @param int $userId \u30e6\u30fc\u30b6\u30fcID\n * @param array $settings \u8a2d\u5b9a\u30c7\u30fc\u30bf\n * @return bool \u6210\u529f\u3057\u305f\u304b\u3069\u3046\u304b\n *\/\nfunction saveUserSettings(PDO $pdo, $userId, $settings) {\n    \/\/ \u8a2d\u5b9a\u30c7\u30fc\u30bf\u3092JSON\u306b\u30a8\u30f3\u30b3\u30fc\u30c9\n    $jsonSettings = json_encode($settings, JSON_UNESCAPED_UNICODE);\n    \n    \/\/ SQL\u30a4\u30f3\u30b8\u30a7\u30af\u30b7\u30e7\u30f3\u5bfe\u7b56\u3068\u3057\u3066\u30d7\u30ea\u30da\u30a2\u30c9\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3092\u4f7f\u7528\n    $stmt = $pdo-&gt;prepare(\n        'INSERT INTO user_settings (user_id, settings, updated_at) \n         VALUES (?, ?, NOW())\n         ON DUPLICATE KEY UPDATE settings = ?, updated_at = NOW()'\n    );\n    \n    return $stmt-&gt;execute([$userId, $jsonSettings, $jsonSettings]);\n}\n\n\/**\n * JSON\u5f62\u5f0f\u306e\u8a2d\u5b9a\u3092\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u304b\u3089\u53d6\u5f97\u3059\u308b\n *\n * @param PDO $pdo PDO\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\n * @param int $userId \u30e6\u30fc\u30b6\u30fcID\n * @param mixed $default \u30c7\u30d5\u30a9\u30eb\u30c8\u5024\n * @return array \u8a2d\u5b9a\u30c7\u30fc\u30bf\n *\/\nfunction getUserSettings(PDO $pdo, $userId, $default = []) {\n    $stmt = $pdo-&gt;prepare('SELECT settings FROM user_settings WHERE user_id = ?');\n    $stmt-&gt;execute([$userId]);\n    \n    $result = $stmt-&gt;fetch(PDO::FETCH_ASSOC);\n    \n    if ($result &amp;&amp; !empty($result['settings'])) {\n        return json_decode($result['settings'], true);\n    }\n    \n    return $default;\n}\n\n\/\/ \u4f7f\u7528\u4f8b\n$pdo = new PDO('mysql:host=localhost;dbname=testdb', 'user', 'password');\n$pdo-&gt;setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);\n\n\/\/ \u30e6\u30fc\u30b6\u30fc\u8a2d\u5b9a\u3092\u4fdd\u5b58\n$userSettings = [\n    'theme' =&gt; 'dark',\n    'notifications' =&gt; [\n        'email' =&gt; true,\n        'push' =&gt; false,\n        'sms' =&gt; true\n    ],\n    'dashboard' =&gt; [\n        'widgets' =&gt; ['calendar', 'tasks', 'messages'],\n        'layout' =&gt; 'grid'\n    ]\n];\n\nsaveUserSettings($pdo, 123, $userSettings);\n\n\/\/ \u30e6\u30fc\u30b6\u30fc\u8a2d\u5b9a\u3092\u53d6\u5f97\n$settings = getUserSettings($pdo, 123);\necho \"\u73fe\u5728\u306e\u30c6\u30fc\u30de: \" . $settings['theme'] . \"\\n\";\necho \"\u901a\u77e5\u8a2d\u5b9a: \" . ($settings['notifications']['email'] ? '\u30e1\u30fc\u30eb\u901a\u77e5\u30aa\u30f3' : '\u30e1\u30fc\u30eb\u901a\u77e5\u30aa\u30d5');\n<\/pre>\n\n\n\n<p><strong>SQL\u3067\u306eJSON\u64cd\u4f5c<\/strong> \u6700\u65b0\u306e\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3067\u306f\u3001JSON\u30c7\u30fc\u30bf\u3092\u76f4\u63a5\u30af\u30a8\u30ea\u3067\u64cd\u4f5c\u3059\u308b\u3053\u3068\u3082\u53ef\u80fd\u3067\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ MySQL 5.7+\u3067\u306eJSON\u64cd\u4f5c\n$pdo = new PDO('mysql:host=localhost;dbname=testdb', 'user', 'password');\n\n\/\/ JSON\u30c7\u30fc\u30bf\u304b\u3089\u7279\u5b9a\u306e\u5024\u3092\u62bd\u51fa\n$stmt = $pdo-&gt;query(\n    \"SELECT \n        id, \n        JSON_EXTRACT(settings, '$.theme') as theme,\n        JSON_EXTRACT(settings, '$.notifications.email') as email_notifications\n     FROM user_settings\n     WHERE JSON_EXTRACT(settings, '$.notifications.push') = true\"\n);\n\n$results = $stmt-&gt;fetchAll(PDO::FETCH_ASSOC);\n\n\/\/ PostgreSQL 9.4+\u3067\u306e\u4f8b\n\/\/ SELECT id, settings-&gt;&gt;'theme' as theme FROM user_settings WHERE settings-&gt;'notifications'-&gt;&gt;'push' = 'true';\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-40\">\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u306e\u52d5\u7684\u751f\u6210<\/h3>\n\n\n\n<p>\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u3092JSON\u5f62\u5f0f\u3067\u751f\u6210\u30fb\u7ba1\u7406\u3059\u308b\u65b9\u6cd5\u3092\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002\u3053\u306e\u65b9\u6cd5\u306f\u7279\u306bJavaScript\u30d9\u30fc\u30b9\u306e\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3068\u306e\u9023\u643a\u3084\u3001\u8a2d\u5b9a\u306e\u8996\u899a\u5316\u30fb\u7de8\u96c6\u30c4\u30fc\u30eb\u306e\u4f5c\u6210\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/**\n * \u74b0\u5883\u306b\u5fdc\u3058\u305f\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u3092\u751f\u6210\u3059\u308b\n *\n * @param string $env \u74b0\u5883\u540d\uff08production, development, testing\uff09\n * @return bool \u6210\u529f\u3057\u305f\u304b\u3069\u3046\u304b\n *\/\nfunction generateConfigFile($env = 'development') {\n    \/\/ \u57fa\u672c\u8a2d\u5b9a\n    $baseConfig = [\n        'app_name' =&gt; 'MyAwesomeApp',\n        'version' =&gt; '1.0.0',\n        'debug' =&gt; false,\n        'environment' =&gt; $env,\n        'created_at' =&gt; date('Y-m-d H:i:s')\n    ];\n    \n    \/\/ \u74b0\u5883\u56fa\u6709\u306e\u8a2d\u5b9a\u3092\u30de\u30fc\u30b8\n    switch ($env) {\n        case 'production':\n            $envConfig = [\n                'debug' =&gt; false,\n                'api_url' =&gt; 'https:\/\/api.example.com\/v1',\n                'cdn_url' =&gt; 'https:\/\/cdn.example.com',\n                'cache_time' =&gt; 3600\n            ];\n            break;\n            \n        case 'testing':\n            $envConfig = [\n                'debug' =&gt; true,\n                'api_url' =&gt; 'https:\/\/test-api.example.com\/v1',\n                'cdn_url' =&gt; 'https:\/\/test-cdn.example.com',\n                'cache_time' =&gt; 60\n            ];\n            break;\n            \n        case 'development':\n        default:\n            $envConfig = [\n                'debug' =&gt; true,\n                'api_url' =&gt; 'http:\/\/localhost:8000\/api\/v1',\n                'cdn_url' =&gt; '\/assets',\n                'cache_time' =&gt; 0\n            ];\n            break;\n    }\n    \n    \/\/ \u8a2d\u5b9a\u3092\u30de\u30fc\u30b8\n    $config = array_merge($baseConfig, $envConfig);\n    \n    \/\/ JSON\u30d5\u30a1\u30a4\u30eb\u3068\u3057\u3066\u4fdd\u5b58\n    $jsonConfig = json_encode($config, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE);\n    $filePath = __DIR__ . \"\/config.{$env}.json\";\n    \n    return file_put_contents($filePath, $jsonConfig) !== false;\n}\n\n\/**\n * \u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u304b\u3089\u30c7\u30fc\u30bf\u3092\u8aad\u307f\u8fbc\u3080\n *\n * @param string $env \u74b0\u5883\u540d\n * @return array \u8a2d\u5b9a\u30c7\u30fc\u30bf\n *\/\nfunction loadConfig($env = 'development') {\n    $filePath = __DIR__ . \"\/config.{$env}.json\";\n    \n    if (!file_exists($filePath)) {\n        \/\/ \u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u304c\u5b58\u5728\u3057\u306a\u3044\u5834\u5408\u306f\u751f\u6210\n        generateConfigFile($env);\n    }\n    \n    $jsonConfig = file_get_contents($filePath);\n    return json_decode($jsonConfig, true);\n}\n\n\/\/ \u4f7f\u7528\u4f8b\n\/\/ \u5404\u74b0\u5883\u7528\u306e\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u3092\u751f\u6210\ngenerateConfigFile('development');\ngenerateConfigFile('testing');\ngenerateConfigFile('production');\n\n\/\/ \u73fe\u5728\u306e\u74b0\u5883\u306e\u8a2d\u5b9a\u3092\u8aad\u307f\u8fbc\u3080\n$env = getenv('APP_ENV') ?: 'development';\n$config = loadConfig($env);\n\n\/\/ \u8a2d\u5b9a\u5024\u3092\u4f7f\u7528\n$debug = $config['debug'];\n$apiUrl = $config['api_url'];\n<\/pre>\n\n\n\n<p>\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\u5411\u3051\u306b\u8a2d\u5b9a\u3092\u51fa\u529b\u3059\u308b\u4f8b\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/**\n * \u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\u7528\u306b\u516c\u958b\u53ef\u80fd\u306a\u8a2d\u5b9a\u3092JavaScript\u5909\u6570\u3068\u3057\u3066\u51fa\u529b\n *\/\nfunction outputPublicConfig() {\n    $env = getenv('APP_ENV') ?: 'development';\n    $config = loadConfig($env);\n    \n    \/\/ \u516c\u958b\u3057\u3066\u3082\u5b89\u5168\u306a\u8a2d\u5b9a\u306e\u307f\u3092\u542b\u3081\u308b\n    $publicConfig = [\n        'app_name' =&gt; $config['app_name'],\n        'version' =&gt; $config['version'],\n        'api_url' =&gt; $config['api_url'],\n        'cdn_url' =&gt; $config['cdn_url'],\n        'environment' =&gt; $config['environment']\n    ];\n    \n    echo \"&lt;script&gt;\\n\";\n    echo \"\/\/ \u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u8a2d\u5b9a\\n\";\n    echo \"window.AppConfig = \" . json_encode($publicConfig, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE) . \";\\n\";\n    echo \"&lt;\/script&gt;\";\n}\n\n\/\/ HTML\u5185\u3067\u547c\u3073\u51fa\u3057\n\/\/ &lt;head&gt;\n\/\/     &lt;?php outputPublicConfig(); ?&gt;\n\/\/ &lt;\/head&gt;\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-41\">\u591a\u8a00\u8a9e\u5bfe\u5fdc\u30b5\u30a4\u30c8\u3067\u306e\u30c7\u30fc\u30bf\u7ba1\u7406<\/h3>\n\n\n\n<p>\u591a\u8a00\u8a9e\u5bfe\u5fdc\uff08i18n\uff09\u30b5\u30a4\u30c8\u3067\u306f\u3001\u5404\u8a00\u8a9e\u306e\u30c6\u30ad\u30b9\u30c8\u30c7\u30fc\u30bf\u3092JSON\u5f62\u5f0f\u3067\u7ba1\u7406\u3059\u308b\u65b9\u6cd5\u304c\u6709\u52b9\u3067\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u8a00\u8a9e\u30ea\u30bd\u30fc\u30b9\u3092\u67d4\u8edf\u306b\u7ba1\u7406\u30fb\u66f4\u65b0\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/**\n * \u6307\u5b9a\u3055\u308c\u305f\u8a00\u8a9e\u306e\u7ffb\u8a33\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\u3059\u308b\n *\n * @param string $lang \u8a00\u8a9e\u30b3\u30fc\u30c9\uff08\u4f8b: ja, en, fr\uff09\n * @param string $default \u30c7\u30d5\u30a9\u30eb\u30c8\u8a00\u8a9e\n * @return array \u7ffb\u8a33\u30c7\u30fc\u30bf\n *\/\nfunction getTranslations($lang, $default = 'en') {\n    $langFile = __DIR__ . \"\/languages\/{$lang}.json\";\n    \n    if (!file_exists($langFile)) {\n        \/\/ \u6307\u5b9a\u3055\u308c\u305f\u8a00\u8a9e\u30d5\u30a1\u30a4\u30eb\u304c\u306a\u3044\u5834\u5408\u306f\u30c7\u30d5\u30a9\u30eb\u30c8\u8a00\u8a9e\u3092\u4f7f\u7528\n        $langFile = __DIR__ . \"\/languages\/{$default}.json\";\n    }\n    \n    $jsonData = file_get_contents($langFile);\n    return json_decode($jsonData, true);\n}\n\n\/**\n * \u7ffb\u8a33\u95a2\u6570\n *\n * @param string $key \u7ffb\u8a33\u30ad\u30fc\n * @param array $params \u7f6e\u63db\u30d1\u30e9\u30e1\u30fc\u30bf\n * @param string $lang \u8a00\u8a9e\u30b3\u30fc\u30c9\n * @return string \u7ffb\u8a33\u3055\u308c\u305f\u30c6\u30ad\u30b9\u30c8\n *\/\nfunction t($key, $params = [], $lang = null) {\n    static $translations = null;\n    \n    \/\/ \u8a00\u8a9e\u304c\u6307\u5b9a\u3055\u308c\u3066\u3044\u306a\u3044\u5834\u5408\u306f\u30bb\u30c3\u30b7\u30e7\u30f3\u307e\u305f\u306f\u30af\u30c3\u30ad\u30fc\u304b\u3089\u53d6\u5f97\n    if ($lang === null) {\n        $lang = $_SESSION['lang'] ?? $_COOKIE['lang'] ?? 'en';\n    }\n    \n    \/\/ \u7ffb\u8a33\u30c7\u30fc\u30bf\u304c\u8aad\u307f\u8fbc\u307e\u308c\u3066\u3044\u306a\u3044\u5834\u5408\u306f\u8aad\u307f\u8fbc\u3080\n    if ($translations === null || !isset($translations[$lang])) {\n        $translations[$lang] = getTranslations($lang);\n    }\n    \n    \/\/ \u30ad\u30fc\u306b\u5bfe\u5fdc\u3059\u308b\u7ffb\u8a33\u30c6\u30ad\u30b9\u30c8\u3092\u53d6\u5f97\n    $text = $translations[$lang][$key] ?? $key;\n    \n    \/\/ \u30d1\u30e9\u30e1\u30fc\u30bf\u7f6e\u63db\n    foreach ($params as $param =&gt; $value) {\n        $text = str_replace(\":{$param}\", $value, $text);\n    }\n    \n    return $text;\n}\n\n\/\/ \u4f7f\u7528\u4f8b\n\/\/ languages\/en.json\n\/\/ {\n\/\/     \"welcome\": \"Welcome to our website\",\n\/\/     \"hello_name\": \"Hello, :name!\",\n\/\/     \"items_count\": \"You have :count items in your cart\"\n\/\/ }\n\n\/\/ languages\/ja.json\n\/\/ {\n\/\/     \"welcome\": \"\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u3078\u3088\u3046\u3053\u305d\",\n\/\/     \"hello_name\": \"\u3053\u3093\u306b\u3061\u306f\u3001:name\u3055\u3093\uff01\",\n\/\/     \"items_count\": \"\u30ab\u30fc\u30c8\u306b\u306f:count\u500b\u306e\u30a2\u30a4\u30c6\u30e0\u304c\u3042\u308a\u307e\u3059\"\n\/\/ }\n\n\/\/ \u8a00\u8a9e\u3092\u8a2d\u5b9a\n$_SESSION['lang'] = 'ja';\n\n\/\/ \u7ffb\u8a33\u3092\u4f7f\u7528\necho t('welcome'); \/\/ \u51fa\u529b: \u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u3078\u3088\u3046\u3053\u305d\necho t('hello_name', ['name' =&gt; '\u7530\u4e2d']); \/\/ \u51fa\u529b: \u3053\u3093\u306b\u3061\u306f\u3001\u7530\u4e2d\u3055\u3093\uff01\necho t('items_count', ['count' =&gt; 5]); \/\/ \u51fa\u529b: \u30ab\u30fc\u30c8\u306b\u306f5\u500b\u306e\u30a2\u30a4\u30c6\u30e0\u304c\u3042\u308a\u307e\u3059\n<\/pre>\n\n\n\n<p>\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\u5411\u3051\u306b\u7ffb\u8a33\u30c7\u30fc\u30bf\u3092JSON\u5f62\u5f0f\u3067\u63d0\u4f9b\u3059\u308b\u4f8b\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/**\n * \u73fe\u5728\u306e\u8a00\u8a9e\u306e\u7ffb\u8a33\u30c7\u30fc\u30bf\u3092JavaScript\u3067\u4f7f\u3048\u308b\u3088\u3046\u306b\u51fa\u529b\n *\/\nfunction outputTranslations() {\n    $lang = $_SESSION['lang'] ?? $_COOKIE['lang'] ?? 'en';\n    $translations = getTranslations($lang);\n    \n    echo \"&lt;script&gt;\\n\";\n    echo \"\/\/ \u7ffb\u8a33\u30c7\u30fc\u30bf\\n\";\n    echo \"window.Translations = \" . json_encode($translations, JSON_UNESCAPED_UNICODE) . \";\\n\";\n    \n    \/\/ \u7ffb\u8a33\u30d8\u30eb\u30d1\u30fc\u95a2\u6570\n    echo &lt;&lt;&lt;JS\n\/\/ \u7ffb\u8a33\u95a2\u6570\nwindow.t = function(key, params = {}) {\n    let text = window.Translations[key] || key;\n    \n    \/\/ \u30d1\u30e9\u30e1\u30fc\u30bf\u7f6e\u63db\n    for (const [param, value] of Object.entries(params)) {\n        text = text.replace(`:${param}`, value);\n    }\n    \n    return text;\n};\nJS;\n    echo \"&lt;\/script&gt;\";\n}\n\n\/\/ HTML\u5185\u3067\u547c\u3073\u51fa\u3057\n\/\/ &lt;head&gt;\n\/\/     &lt;?php outputTranslations(); ?&gt;\n\/\/ &lt;\/head&gt;\n\/\/ \n\/\/ JavaScript\u5185\u3067\u306e\u4f7f\u7528\n\/\/ alert(t('hello_name', {name: '\u30e6\u30fc\u30b6\u30fc'}));\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-42\">\u30b0\u30e9\u30d5\u63cf\u753b\u30e9\u30a4\u30d6\u30e9\u30ea\u3078\u306e\u30c7\u30fc\u30bf\u63d0\u4f9b<\/h3>\n\n\n\n<p>Chart.js\u3001D3.js\u3001Highcharts\u306a\u3069\u306e\u30b0\u30e9\u30d5\u63cf\u753b\u30e9\u30a4\u30d6\u30e9\u30ea\u306f\u3001JSON\u5f62\u5f0f\u306e\u30c7\u30fc\u30bf\u3092\u5165\u529b\u3068\u3057\u3066\u6271\u3044\u307e\u3059\u3002PHP\u304b\u3089\u3053\u308c\u3089\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u306b\u9069\u5207\u306a\u5f62\u5f0f\u3067\u30c7\u30fc\u30bf\u3092\u63d0\u4f9b\u3059\u308b\u65b9\u6cd5\u3092\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/**\n * \u6708\u5225\u306e\u58f2\u4e0a\u30c7\u30fc\u30bf\u3092Chart.js\u7528\u306b\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\n *\n * @param PDO $pdo PDO\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\n * @param int $year \u5e74\n * @return array Chart.js\u7528\u306e\u30c7\u30fc\u30bf\u69cb\u9020\n *\/\nfunction getMonthlySalesData(PDO $pdo, $year) {\n    \/\/ \u6708\u5225\u58f2\u4e0a\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\n    $stmt = $pdo-&gt;prepare(\n        'SELECT MONTH(date) as month, SUM(amount) as total\n         FROM sales\n         WHERE YEAR(date) = ?\n         GROUP BY MONTH(date)\n         ORDER BY month'\n    );\n    $stmt-&gt;execute([$year]);\n    $results = $stmt-&gt;fetchAll(PDO::FETCH_ASSOC);\n    \n    \/\/ \u6708\u306e\u540d\u524d\uff08\u30e9\u30d9\u30eb\uff09\n    $months = [\n        '', '1\u6708', '2\u6708', '3\u6708', '4\u6708', '5\u6708', '6\u6708',\n        '7\u6708', '8\u6708', '9\u6708', '10\u6708', '11\u6708', '12\u6708'\n    ];\n    \n    \/\/ \u30c7\u30fc\u30bf\u3092\u6574\u5f62\n    $labels = [];\n    $data = [];\n    \n    for ($i = 1; $i &lt;= 12; $i++) {\n        $labels[] = $months[$i];\n        \n        \/\/ \u305d\u306e\u6708\u306e\u30c7\u30fc\u30bf\u304c\u3042\u308c\u3070\u4f7f\u7528\u3001\u306a\u3051\u308c\u30700\n        $monthData = array_filter($results, function($item) use ($i) {\n            return (int)$item['month'] === $i;\n        });\n        \n        $total = 0;\n        if (!empty($monthData)) {\n            $monthData = reset($monthData);\n            $total = (int)$monthData['total'];\n        }\n        \n        $data[] = $total;\n    }\n    \n    \/\/ Chart.js\u7528\u306e\u30c7\u30fc\u30bf\u69cb\u9020\n    return [\n        'labels' =&gt; $labels,\n        'datasets' =&gt; [\n            [\n                'label' =&gt; $year . '\u5e74\u306e\u58f2\u4e0a',\n                'data' =&gt; $data,\n                'backgroundColor' =&gt; 'rgba(54, 162, 235, 0.2)',\n                'borderColor' =&gt; 'rgba(54, 162, 235, 1)',\n                'borderWidth' =&gt; 1\n            ]\n        ]\n    ];\n}\n\n\/\/ \u4f7f\u7528\u4f8b\n$pdo = new PDO('mysql:host=localhost;dbname=testdb', 'user', 'password');\n$chartData = getMonthlySalesData($pdo, 2023);\n\n\/\/ Chart.js\u7528\u306bJSON\u3068\u3057\u3066\u51fa\u529b\nheader('Content-Type: application\/json');\necho json_encode($chartData);\n<\/pre>\n\n\n\n<p>HTML\/JavaScript\u5074\u3067\u306e\u5b9f\u88c5\u4f8b\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;!DOCTYPE html&gt;\n&lt;html&gt;\n&lt;head&gt;\n    &lt;title&gt;\u58f2\u4e0a\u30b0\u30e9\u30d5&lt;\/title&gt;\n    &lt;script src=\"https:\/\/cdn.jsdelivr.net\/npm\/chart.js\"&gt;&lt;\/script&gt;\n&lt;\/head&gt;\n&lt;body&gt;\n    &lt;div style=\"width: 800px; margin: 0 auto;\"&gt;\n        &lt;canvas id=\"salesChart\"&gt;&lt;\/canvas&gt;\n    &lt;\/div&gt;\n    \n    &lt;script&gt;\n    \/\/ \u30c7\u30fc\u30bf\u3092Ajax\u3067\u53d6\u5f97\n    fetch('get_sales_data.php?year=2023')\n        .then(response =&gt; response.json())\n        .then(chartData =&gt; {\n            const ctx = document.getElementById('salesChart').getContext('2d');\n            new Chart(ctx, {\n                type: 'bar',\n                data: chartData,\n                options: {\n                    responsive: true,\n                    plugins: {\n                        title: {\n                            display: true,\n                            text: '\u6708\u5225\u58f2\u4e0a\u30c7\u30fc\u30bf'\n                        }\n                    }\n                }\n            });\n        })\n        .catch(error =&gt; console.error('Error:', error));\n    &lt;\/script&gt;\n&lt;\/body&gt;\n&lt;\/html&gt;\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-43\">WebSocket\u3092\u4f7f\u3063\u305f\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u30c7\u30fc\u30bf\u9001\u4fe1<\/h3>\n\n\n\n<p>WebSocket\u3092\u4f7f\u3063\u305f\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u901a\u4fe1\u3067\u306f\u3001JSON\u5f62\u5f0f\u3067\u30c7\u30fc\u30bf\u3092\u3084\u308a\u53d6\u308a\u3059\u308b\u306e\u304c\u4e00\u822c\u7684\u3067\u3059\u3002PHP\u304b\u3089WebSocket\u30b5\u30fc\u30d0\u30fc\u306b\u30c7\u30fc\u30bf\u3092\u9001\u4fe1\u3059\u308b\u4f8b\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/**\n * WebSocket\u30b5\u30fc\u30d0\u30fc\u306b\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u9001\u4fe1\u3059\u308b\n *\n * @param string $event \u30a4\u30d9\u30f3\u30c8\u540d\n * @param array $data \u9001\u4fe1\u30c7\u30fc\u30bf\n * @param string $channel \u30c1\u30e3\u30f3\u30cd\u30eb\u540d\n * @return bool \u9001\u4fe1\u6210\u529f\u3057\u305f\u304b\u3069\u3046\u304b\n *\/\nfunction sendWebSocketMessage($event, $data, $channel = 'global') {\n    \/\/ WebSocket\u30b5\u30fc\u30d0\u30fc\u306e\u30a8\u30f3\u30c9\u30dd\u30a4\u30f3\u30c8\n    $socketServer = 'http:\/\/localhost:3000\/message';\n    \n    \/\/ \u30e1\u30c3\u30bb\u30fc\u30b8\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\n    $message = [\n        'event' =&gt; $event,\n        'channel' =&gt; $channel,\n        'data' =&gt; $data,\n        'timestamp' =&gt; time()\n    ];\n    \n    \/\/ JSON\u5f62\u5f0f\u306b\u5909\u63db\n    $jsonMessage = json_encode($message);\n    \n    \/\/ cURL\u3092\u4f7f\u7528\u3057\u3066WebSocket\u30b5\u30fc\u30d0\u30fc\u306b\u9001\u4fe1\n    $ch = curl_init($socketServer);\n    curl_setopt($ch, CURLOPT_CUSTOMREQUEST, \"POST\");\n    curl_setopt($ch, CURLOPT_POSTFIELDS, $jsonMessage);\n    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);\n    curl_setopt($ch, CURLOPT_HTTPHEADER, [\n        'Content-Type: application\/json',\n        'Content-Length: ' . strlen($jsonMessage)\n    ]);\n    \n    $result = curl_exec($ch);\n    $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);\n    curl_close($ch);\n    \n    return $httpCode &gt;= 200 &amp;&amp; $httpCode &lt; 300;\n}\n\n\/\/ \u4f7f\u7528\u4f8b\uff1a\u65b0\u3057\u3044\u6ce8\u6587\u304c\u5165\u3063\u305f\u3068\u304d\u306b\u901a\u77e5\nfunction notifyNewOrder($orderId) {\n    $pdo = new PDO('mysql:host=localhost;dbname=testdb', 'user', 'password');\n    \n    \/\/ \u6ce8\u6587\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\n    $stmt = $pdo-&gt;prepare('SELECT * FROM orders WHERE id = ?');\n    $stmt-&gt;execute([$orderId]);\n    $order = $stmt-&gt;fetch(PDO::FETCH_ASSOC);\n    \n    if ($order) {\n        \/\/ \u9867\u5ba2\u60c5\u5831\u3092\u53d6\u5f97\n        $stmt = $pdo-&gt;prepare('SELECT name, email FROM customers WHERE id = ?');\n        $stmt-&gt;execute([$order['customer_id']]);\n        $customer = $stmt-&gt;fetch(PDO::FETCH_ASSOC);\n        \n        \/\/ \u6ce8\u6587\u5546\u54c1\u3092\u53d6\u5f97\n        $stmt = $pdo-&gt;prepare(\n            'SELECT p.name, oi.quantity, oi.price \n             FROM order_items oi\n             JOIN products p ON oi.product_id = p.id\n             WHERE oi.order_id = ?'\n        );\n        $stmt-&gt;execute([$orderId]);\n        $items = $stmt-&gt;fetchAll(PDO::FETCH_ASSOC);\n        \n        \/\/ \u901a\u77e5\u30c7\u30fc\u30bf\u3092\u4f5c\u6210\n        $notificationData = [\n            'order_id' =&gt; $orderId,\n            'customer' =&gt; $customer['name'],\n            'total_amount' =&gt; $order['total_amount'],\n            'items_count' =&gt; count($items),\n            'status' =&gt; '\u65b0\u898f\u6ce8\u6587',\n            'created_at' =&gt; $order['created_at']\n        ];\n        \n        \/\/ WebSocket\u30b5\u30fc\u30d0\u30fc\u306b\u9001\u4fe1\n        sendWebSocketMessage('new_order', $notificationData, 'orders');\n        \n        \/\/ \u7ba1\u7406\u8005\u5b9b\u306e\u8a73\u7d30\u901a\u77e5\n        $detailedData = [\n            'order' =&gt; $order,\n            'customer' =&gt; $customer,\n            'items' =&gt; $items\n        ];\n        \n        sendWebSocketMessage('order_details', $detailedData, 'admin');\n        \n        return true;\n    }\n    \n    return false;\n}\n\n\/\/ \u6ce8\u6587\u51e6\u7406\u5f8c\u306b\u547c\u3073\u51fa\u3057\n$orderId = createOrder($cartItems, $customerData);\nif ($orderId) {\n    notifyNewOrder($orderId);\n}\n<\/pre>\n\n\n\n<p>\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5074\uff08JavaScript\uff09\u3067\u306e\u5b9f\u88c5\u4f8b\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ Socket.IO\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\nconst socket = io('http:\/\/localhost:3000');\n\n\/\/ \u6ce8\u6587\u30c1\u30e3\u30f3\u30cd\u30eb\u3092\u8cfc\u8aad\nsocket.on('connect', () =&gt; {\n    socket.emit('subscribe', 'orders');\n});\n\n\/\/ \u65b0\u898f\u6ce8\u6587\u30a4\u30d9\u30f3\u30c8\u3092\u30ea\u30c3\u30b9\u30f3\nsocket.on('new_order', (data) =&gt; {\n    \/\/ \u65b0\u3057\u3044\u6ce8\u6587\u306e\u901a\u77e5\u3092\u8868\u793a\n    showNotification(`\u65b0\u898f\u6ce8\u6587: ${data.customer}\u69d8 - ${data.total_amount}\u5186`);\n    \n    \/\/ \u6ce8\u6587\u30ea\u30b9\u30c8\u306b\u8ffd\u52a0\n    addOrderToList(data);\n    \n    \/\/ \u901a\u77e5\u97f3\u3092\u518d\u751f\n    playNotificationSound();\n});\n\n\/\/ \u7ba1\u7406\u8005\u5411\u3051\u8a73\u7d30\u30a4\u30d9\u30f3\u30c8\u3092\u30ea\u30c3\u30b9\u30f3\nsocket.on('order_details', (data) =&gt; {\n    \/\/ \u8a73\u7d30\u30c7\u30fc\u30bf\u3092\u66f4\u65b0\n    updateOrderDetails(data);\n});\n\n\/\/ \u901a\u77e5\u3092\u8868\u793a\u3059\u308b\u95a2\u6570\nfunction showNotification(message) {\n    const notification = document.createElement('div');\n    notification.className = 'notification';\n    notification.textContent = message;\n    document.getElementById('notificationArea').appendChild(notification);\n    \n    \/\/ \u6570\u79d2\u5f8c\u306b\u901a\u77e5\u3092\u6d88\u3059\n    setTimeout(() =&gt; {\n        notification.classList.add('fade-out');\n        setTimeout(() =&gt; notification.remove(), 500);\n    }, 5000);\n}\n<\/pre>\n\n\n\n<p>\u4ee5\u4e0a\u306e7\u3064\u306e\u5b9f\u8df5\u30d1\u30bf\u30fc\u30f3\u306f\u3001\u5b9f\u969b\u306e\u958b\u767a\u73fe\u5834\u3067\u3088\u304f\u4f7f\u308f\u308c\u308b<code>json_encode()<\/code>\u306e\u6d3b\u7528\u4f8b\u3067\u3059\u3002\u3053\u308c\u3089\u306e\u30d1\u30bf\u30fc\u30f3\u3092\u5fdc\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u69d8\u3005\u306a\u30b7\u30fc\u30f3\u3067JSON\u5f62\u5f0f\u306e\u30c7\u30fc\u30bf\u3092\u30b9\u30e0\u30fc\u30ba\u306b\u6271\u3048\u308b\u3088\u3046\u306b\u306a\u308b\u3067\u3057\u3087\u3046\u3002\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u89b3\u70b9\u304b\u3089json_encode\u306e\u4f7f\u3044\u65b9\u3092\u89e3\u8aac\u3057\u307e\u3059\u3002 \/**<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6a19\u6e96\u7684\u306aAPI\u30ec\u30b9\u30dd\u30f3\u30b9\u3092\u751f\u6210\u3059\u308b\u95a2\u6570<\/li>\n\n\n\n<li>@param bool $success \u51e6\u7406\u304c\u6210\u529f\u3057\u305f\u304b\u3069\u3046\u304b<\/li>\n\n\n\n<li>@param mixed $data \u30ec\u30b9\u30dd\u30f3\u30b9\u30c7\u30fc\u30bf<\/li>\n\n\n\n<li>@param string $message \u30e1\u30c3\u30bb\u30fc\u30b8<\/li>\n\n\n\n<li>@param int $statusCode HTTP\u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9<\/li>\n\n\n\n<li>@return void *\/ function sendApiResponse($success, $data = null, $message = \u201d, $statusCode = 200) { \/\/ \u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9\u3092\u8a2d\u5b9a http_response_code($statusCode); \/\/ \u30ec\u30b9\u30dd\u30f3\u30b9\u306e\u69cb\u9020 $response = [ \u2018success\u2019 =&gt; $success, \u2018message\u2019 =&gt; $message, \u2018data\u2019 =&gt; $data ]; \/\/ JSON\u30d8\u30c3\u30c0\u30fc\u3092\u8a2d\u5b9a header(\u2018Content-Type: application\/json; charset=utf-8\u2019); \/\/ CORS\u8a2d\u5b9a\uff08\u5fc5\u8981\u306b\u5fdc\u3058\u3066\uff09 header(\u2018Access-Control-Allow-Origin: *\u2019); header(\u2018Access-Control-Allow-Methods: GET, POST, PUT, DELETE, OPTIONS\u2019); header(\u2018Access-Control-Allow-Headers: Content-Type, Authorization\u2019); \/\/ JSON\u3068\u3057\u3066\u30a8\u30f3\u30b3\u30fc\u30c9\u3057\u3066\u51fa\u529b echo json_encode($response, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES); exit; }<\/li>\n<\/ul>\n\n\n\n<p>\/\/ \u4f7f\u7528\u4f8b\uff1a\u6210\u529f\u30ec\u30b9\u30dd\u30f3\u30b9 $users = [ [\u2018id\u2019 =&gt; 1, \u2018name\u2019 =&gt; \u2018\u5c71\u7530\u592a\u90ce\u2019, \u2018email\u2019 =&gt; \u2018yamada@example.com\u2019], [\u2018id\u2019 =&gt; 2, \u2018name\u2019 =&gt; \u2018\u4f50\u85e4\u82b1\u5b50\u2019, \u2018email\u2019 =&gt; \u2018sato@example.com\u2019] ]; sendApiResponse(true, $users, \u2018\u30e6\u30fc\u30b6\u30fc\u4e00\u89a7\u3092\u53d6\u5f97\u3057\u307e\u3057\u305f\u2019, 200);<\/p>\n\n\n\n<p>\/\/ \u4f7f\u7528\u4f8b\uff1a\u30a8\u30e9\u30fc\u30ec\u30b9\u30dd\u30f3\u30b9 if (!isset($_GET[\u2018id\u2019])) { sendApiResponse(false, null, \u2018\u30e6\u30fc\u30b6\u30fcID\u304c\u6307\u5b9a\u3055\u308c\u3066\u3044\u307e\u305b\u3093\u2019, 400); }<\/p>\n\n\n\n<p>\/\/ \u4f7f\u7528\u4f8b\uff1a\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30a8\u30e9\u30fc try { \/\/ \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u51e6\u7406 } catch (PDOException $e) { sendApiResponse(false, null, \u2018\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u307e\u3057\u305f\u2019, 500); }<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\n\u3053\u306e\u30d1\u30bf\u30fc\u30f3\u3067\u306f\u3001\u4e00\u8cab\u3057\u305f\u5f62\u5f0f\u306eAPI\u30ec\u30b9\u30dd\u30f3\u30b9\u3092\u751f\u6210\u3067\u304d\u307e\u3059\u3002\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5074\u306f\u5e38\u306b\u540c\u3058\u69cb\u9020\u306e\u30ec\u30b9\u30dd\u30f3\u30b9\u3092\u671f\u5f85\u3067\u304d\u308b\u305f\u3081\u3001\u51e6\u7406\u304c\u30b7\u30f3\u30d7\u30eb\u306b\u306a\u308a\u307e\u3059\u3002\n\n**\u5fdc\u7528\u4f8b\uff1a\u30da\u30fc\u30b8\u30cd\u30fc\u30b7\u30e7\u30f3\u5bfe\u5fdcAPI**\n\n```php\n\/**\n * \u30da\u30fc\u30b8\u30cd\u30fc\u30b7\u30e7\u30f3\u5bfe\u5fdc\u306eAPI\u30ec\u30b9\u30dd\u30f3\u30b9\u3092\u751f\u6210\n *\n * @param array $items \u30a2\u30a4\u30c6\u30e0\u306e\u914d\u5217\n * @param int $totalItems \u5168\u30a2\u30a4\u30c6\u30e0\u6570\n * @param int $page \u73fe\u5728\u306e\u30da\u30fc\u30b8\n * @param int $perPage 1\u30da\u30fc\u30b8\u3042\u305f\u308a\u306e\u30a2\u30a4\u30c6\u30e0\u6570\n * @return void\n *\/\nfunction sendPaginatedResponse($items, $totalItems, $page, $perPage) {\n    $totalPages = ceil($totalItems \/ $perPage);\n    \n    $response = [\n        'success' =&gt; true,\n        'data' =&gt; $items,\n        'pagination' =&gt; [\n            'total_items' =&gt; $totalItems,\n            'total_pages' =&gt; $totalPages,\n            'current_page' =&gt; $page,\n            'per_page' =&gt; $perPage,\n            'has_next_page' =&gt; $page &lt; $totalPages,\n            'has_prev_page' =&gt; $page &gt; 1\n        ]\n    ];\n    \n    header('Content-Type: application\/json; charset=utf-8');\n    echo json_encode($response, JSON_UNESCAPED_UNICODE);\n    exit;\n}\n\n\/\/ \u4f7f\u7528\u4f8b\n$page = isset($_GET['page']) ? (int)$_GET['page'] : 1;\n$perPage = isset($_GET['per_page']) ? (int)$_GET['per_page'] : 10;\n\n$pdo = new PDO('mysql:host=localhost;dbname=testdb', 'user', 'password');\n\n\/\/ \u5168\u4ef6\u6570\u3092\u53d6\u5f97\n$stmt = $pdo-&gt;query('SELECT COUNT(*) FROM products');\n$totalItems = $stmt-&gt;fetchColumn();\n\n\/\/ \u73fe\u5728\u306e\u30da\u30fc\u30b8\u306e\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\n$offset = ($page - 1) * $perPage;\n$stmt = $pdo-&gt;prepare('SELECT * FROM products LIMIT ? OFFSET ?');\n$stmt-&gt;bindValue(1, $perPage, PDO::PARAM_INT);\n$stmt-&gt;bindValue(2, $offset, PDO::PARAM_INT);\n$stmt-&gt;execute();\n$products = $stmt-&gt;fetchAll(PDO::FETCH_ASSOC);\n\nsendPaginatedResponse($products, $totalItems, $page, $perPage);\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-44\">Ajax\u30ea\u30af\u30a8\u30b9\u30c8\u3078\u306e\u30c7\u30fc\u30bf\u53d7\u3051\u6e21\u3057<\/h3>\n\n\n\n<p>JavaScript\u304b\u3089\u306eAjax\u30ea\u30af\u30a8\u30b9\u30c8\u306b\u5bfe\u3057\u3066\u3001\u9069\u5207\u306aJSON\u30c7\u30fc\u30bf\u3092\u8fd4\u3059\u30d1\u30bf\u30fc\u30f3\u3092\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002\u7279\u306bjQuery\u3084Fetch API\u306a\u3069\u306e\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u30e9\u30a4\u30d6\u30e9\u30ea\u3068\u306e\u9023\u643a\u3092\u8003\u616e\u3057\u305f\u5b9f\u88c5\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\"><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-45\">\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u89b3\u70b9\u304b\u3089\u898b\u305fjson_encode<\/h2>\n\n\n\n<p>Web\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u958b\u767a\u306b\u304a\u3044\u3066\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306f\u5e38\u306b\u6700\u91cd\u8981\u4e8b\u9805\u306e\u4e00\u3064\u3067\u3059\u3002<code>json_encode()<\/code>\u95a2\u6570\u306f\u4e00\u898b\u30b7\u30f3\u30d7\u30eb\u306b\u898b\u3048\u307e\u3059\u304c\u3001\u4f7f\u3044\u65b9\u306b\u3088\u3063\u3066\u306f\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30ea\u30b9\u30af\u3092\u751f\u307f\u51fa\u3059\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001<code>json_encode()<\/code>\u3092\u5b89\u5168\u306b\u4f7f\u7528\u3059\u308b\u305f\u3081\u306e\u65b9\u6cd5\u3068\u3001\u3088\u304f\u3042\u308b\u843d\u3068\u3057\u7a74\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-46\">XSS\u653b\u6483\u3092\u9632\u3050\u305f\u3081\u306e\u30c7\u30fc\u30bf\u30b5\u30cb\u30bf\u30a4\u30ba<\/h3>\n\n\n\n<p>JSON\u5f62\u5f0f\u306e\u30c7\u30fc\u30bf\u3092HTML\u5185\u306b\u76f4\u63a5\u57cb\u3081\u8fbc\u3080\u5834\u5408\u3001XSS\uff08\u30af\u30ed\u30b9\u30b5\u30a4\u30c8\u30b9\u30af\u30ea\u30d7\u30c6\u30a3\u30f3\u30b0\uff09\u653b\u6483\u306e\u30ea\u30b9\u30af\u304c\u3042\u308a\u307e\u3059\u3002\u7279\u306b\u3001JSON\u30c7\u30fc\u30bf\u304cJavaScript\u3067\u8a55\u4fa1\u3055\u308c\u308b\u5834\u5408\u3001\u60aa\u610f\u306e\u3042\u308b\u30b3\u30fc\u30c9\u304c\u5b9f\u884c\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-47\">\u5371\u967a\u306a\u5b9f\u88c5\u4f8b<\/h4>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u5371\u967a\u306a\u5b9f\u88c5\u4f8b - XSS\u8106\u5f31\u6027\u3042\u308a\n$userData = [\n    'name' =&gt; $_POST['name'], \/\/ \u30e6\u30fc\u30b6\u30fc\u5165\u529b\n    'email' =&gt; $_POST['email'], \/\/ \u30e6\u30fc\u30b6\u30fc\u5165\u529b\n    'role' =&gt; 'user'\n];\n\n\/\/ JSON\u30c7\u30fc\u30bf\u3092HTML\u306b\u76f4\u63a5\u57cb\u3081\u8fbc\u3080\necho '&lt;script&gt;';\necho 'const userData = ' . json_encode($userData) . ';';\necho '&lt;\/script&gt;';\n<\/pre>\n\n\n\n<p>\u3053\u306e\u5b9f\u88c5\u3067\u306f\u3001\u30e6\u30fc\u30b6\u30fc\u304c\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u60aa\u610f\u306e\u3042\u308b\u30c7\u30fc\u30bf\u3092\u9001\u4fe1\u3059\u308b\u3053\u3068\u3067\u3001XSS\u653b\u6483\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">name: \"\"}; alert('XSS\u653b\u6483!'); const dummy = {\"\n<\/pre>\n\n\n\n<p>\u3053\u308c\u306b\u3088\u308a\u3001\u751f\u6210\u3055\u308c\u308bJavaScript\u30b3\u30fc\u30c9\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">const userData = {\"name\":\"\"}; alert('XSS\u653b\u6483!'); const dummy = {\"\",\"email\":\"...\",\"role\":\"user\"};\n<\/pre>\n\n\n\n<p>\u3053\u306e\u7d50\u679c\u3001<code>alert('XSS\u653b\u6483!')<\/code>\u304c\u5b9f\u884c\u3055\u308c\u3066\u3057\u307e\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-48\">\u5b89\u5168\u306a\u5b9f\u88c5\u4f8b<\/h4>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/* *\n * JSON\u3092HTML\u5185\u306b\u5b89\u5168\u306b\u57cb\u3081\u8fbc\u3080\n *\n * @param mixed $data \u30a8\u30f3\u30b3\u30fc\u30c9\u3059\u308b\u30c7\u30fc\u30bf\n * @return string HTML\u5b89\u5168\u306aJSON\u6587\u5b57\u5217\n *\/\nfunction safeJsonEncode($data) {\n    \/\/ JSON_HEX_TAG\u30aa\u30d7\u30b7\u30e7\u30f3\u3067 &lt; \u3068 &gt; \u3092 \\u003C \u3068 \\u003E \u306b\u30a8\u30b9\u30b1\u30fc\u30d7\n    \/\/ JSON_HEX_APOS\u30aa\u30d7\u30b7\u30e7\u30f3\u3067 ' \u3092 \\u0027 \u306b\u30a8\u30b9\u30b1\u30fc\u30d7\n    \/\/ JSON_HEX_QUOT\u30aa\u30d7\u30b7\u30e7\u30f3\u3067 \" \u3092 \\u0022 \u306b\u30a8\u30b9\u30b1\u30fc\u30d7\n    \/\/ JSON_HEX_AMP\u30aa\u30d7\u30b7\u30e7\u30f3\u3067 &amp; \u3092 \\u0026 \u306b\u30a8\u30b9\u30b1\u30fc\u30d7\n    $json = json_encode($data, JSON_HEX_TAG | JSON_HEX_APOS | JSON_HEX_QUOT | JSON_HEX_AMP | JSON_UNESCAPED_UNICODE);\n    \n    return $json;\n}\n\n\/\/ \u4f7f\u7528\u4f8b\n$userData = [\n    'name' =&gt; $_POST['name'], \/\/ \u30e6\u30fc\u30b6\u30fc\u5165\u529b\n    'email' =&gt; $_POST['email'], \/\/ \u30e6\u30fc\u30b6\u30fc\u5165\u529b\n    'role' =&gt; 'user'\n];\n\n\/\/ \u5b89\u5168\u306bJSON\u30c7\u30fc\u30bf\u3092HTML\u306b\u57cb\u3081\u8fbc\u3080\necho '&lt;script&gt;';\necho 'const userData = ' . safeJsonEncode($userData) . ';';\necho '&lt;\/script&gt;';\n<\/pre>\n\n\n\n<p><code>JSON_HEX_*<\/code>\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001HTML\u306e\u7279\u6b8a\u6587\u5b57\u304cUnicode\u30a8\u30b9\u30b1\u30fc\u30d7\u30b7\u30fc\u30b1\u30f3\u30b9\u306b\u5909\u63db\u3055\u308c\u3001XSS\u653b\u6483\u3092\u9632\u6b62\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-49\">\u3055\u3089\u306b\u5b89\u5168\u306a\u65b9\u6cd5\uff1aJSON.parse\u306e\u4f7f\u7528<\/h4>\n\n\n\n<p>\u3088\u308a\u5b89\u5168\u306a\u65b9\u6cd5\u3068\u3057\u3066\u3001JSON\u6587\u5b57\u5217\u3092HTML\u5c5e\u6027\u3068\u3057\u3066\u57cb\u3081\u8fbc\u307f\u3001<code>JSON.parse()<\/code>\u3067\u89e3\u6790\u3059\u308b\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u3088\u308a\u5b89\u5168\u306a\u5b9f\u88c5\u4f8b\n$userData = [\n    'name' =&gt; $_POST['name'],\n    'email' =&gt; $_POST['email'],\n    'role' =&gt; 'user'\n];\n\n$safeJson = htmlspecialchars(json_encode($userData), ENT_QUOTES, 'UTF-8');\n?&gt;\n\n&lt;div id=\"user-data\" data-json=\"&lt;?php echo $safeJson; ?&gt;\"&gt;&lt;\/div&gt;\n\n&lt;script&gt;\n\/\/ HTML\u5c5e\u6027\u304b\u3089JSON\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\u3057\u3066\u89e3\u6790\nconst userDataElement = document.getElementById('user-data');\nconst userData = JSON.parse(userDataElement.getAttribute('data-json'));\nconsole.log(userData);\n&lt;\/script&gt;\n<\/pre>\n\n\n\n<p>\u3053\u306e\u65b9\u6cd5\u3067\u306f\u3001JSON\u30c7\u30fc\u30bf\u304cJavaScript\u30b3\u30fc\u30c9\u3068\u3057\u3066\u76f4\u63a5\u8a55\u4fa1\u3055\u308c\u308b\u3053\u3068\u304c\u306a\u3044\u305f\u3081\u3001\u3088\u308a\u5b89\u5168\u3067\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-50\">API\u30ec\u30b9\u30dd\u30f3\u30b9\u3067\u306e\u5bfe\u7b56<\/h4>\n\n\n\n<p>JSON\u3092API\u30ec\u30b9\u30dd\u30f3\u30b9\u3068\u3057\u3066\u8fd4\u3059\u5834\u5408\u3082\u3001\u9069\u5207\u306aHTTP\u30d8\u30c3\u30c0\u30fc\u3092\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/**\n * \u5b89\u5168\u306aAPI\u30ec\u30b9\u30dd\u30f3\u30b9\u3092\u9001\u4fe1\n *\n * @param mixed $data \u30ec\u30b9\u30dd\u30f3\u30b9\u30c7\u30fc\u30bf\n * @param int $statusCode HTTP\u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9\n *\/\nfunction sendSafeJsonResponse($data, $statusCode = 200) {\n    \/\/ \u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9\u3092\u8a2d\u5b9a\n    http_response_code($statusCode);\n    \n    \/\/ Content-Type\u30d8\u30c3\u30c0\u30fc\u3092\u9069\u5207\u306b\u8a2d\u5b9a\n    header('Content-Type: application\/json; charset=utf-8');\n    \n    \/\/ X-Content-Type-Options\u30d8\u30c3\u30c0\u30fc\u3092\u8a2d\u5b9a\u3057\u3066MIME\u30bf\u30a4\u30d7\u30b9\u30cb\u30c3\u30d5\u30a3\u30f3\u30b0\u3092\u9632\u6b62\n    header('X-Content-Type-Options: nosniff');\n    \n    \/\/ JSON\u3068\u3057\u3066\u30a8\u30f3\u30b3\u30fc\u30c9\u3057\u3066\u51fa\u529b\n    echo json_encode($data, JSON_UNESCAPED_UNICODE);\n    exit;\n}\n<\/pre>\n\n\n\n<p><code>X-Content-Type-Options: nosniff<\/code>\u30d8\u30c3\u30c0\u30fc\u3092\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u30d6\u30e9\u30a6\u30b6\u304cContent-Type\u3092\u7121\u8996\u3057\u3066\u30b3\u30f3\u30c6\u30f3\u30c4\u306e\u7a2e\u985e\u3092\u63a8\u6e2c\u3059\u308b\u3053\u3068\u3092\u9632\u6b62\u3057\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u5411\u4e0a\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-51\">\u6a5f\u5bc6\u60c5\u5831\u306e\u6271\u3044\u3068\u51fa\u529b\u5236\u5fa1\u306e\u65b9\u6cd5<\/h3>\n\n\n\n<p>JSON\u30c7\u30fc\u30bf\u306b\u6a5f\u5bc6\u60c5\u5831\u304c\u542b\u307e\u308c\u308b\u5834\u5408\u3001\u610f\u56f3\u305b\u305a\u60c5\u5831\u304c\u6f0f\u6d29\u3059\u308b\u30ea\u30b9\u30af\u304c\u3042\u308a\u307e\u3059\u3002\u7279\u306b\u30ed\u30b0\u3084\u30c7\u30d0\u30c3\u30b0\u60c5\u5831\u3001\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u306b\u304a\u3044\u3066\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-52\">\u6a5f\u5bc6\u60c5\u5831\u306e\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0<\/h4>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/**\n * \u6a5f\u5bc6\u60c5\u5831\u3092\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3057\u3066JSON\u30a8\u30f3\u30b3\u30fc\u30c9\u3059\u308b\n *\n * @param array $data \u5143\u30c7\u30fc\u30bf\n * @param array $sensitiveFields \u6a5f\u5bc6\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u30ea\u30b9\u30c8\n * @return string JSON\u30a8\u30f3\u30b3\u30fc\u30c9\u3055\u308c\u305f\u6587\u5b57\u5217\n *\/\nfunction encodeWithoutSensitiveData($data, $sensitiveFields = ['password', 'credit_card', 'token', 'secret']) {\n    \/\/ \u914d\u5217\u3092\u30c7\u30a3\u30fc\u30d7\u30b3\u30d4\u30fc\n    $filteredData = json_decode(json_encode($data), true);\n    \n    \/\/ \u6a5f\u5bc6\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u518d\u5e30\u7684\u306b\u691c\u7d22\u3057\u3066\u524a\u9664\u307e\u305f\u306f\u7f6e\u63db\n    $filterRecursive = function(&amp;$array) use (&amp;$filterRecursive, $sensitiveFields) {\n        foreach ($array as $key =&gt; &amp;$value) {\n            if (in_array($key, $sensitiveFields, true)) {\n                \/\/ \u6a5f\u5bc6\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u300c***\u300d\u3067\u7f6e\u63db\n                $array[$key] = '***';\n            } elseif (is_array($value)) {\n                \/\/ \u914d\u5217\u306e\u5834\u5408\u306f\u518d\u5e30\u7684\u306b\u51e6\u7406\n                $filterRecursive($value);\n            }\n        }\n    };\n    \n    \/\/ \u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u5b9f\u884c\n    if (is_array($filteredData)) {\n        $filterRecursive($filteredData);\n    }\n    \n    return json_encode($filteredData, JSON_UNESCAPED_UNICODE);\n}\n\n\/\/ \u4f7f\u7528\u4f8b\n$userData = [\n    'id' =&gt; 123,\n    'name' =&gt; '\u30c6\u30b9\u30c8\u30e6\u30fc\u30b6\u30fc',\n    'email' =&gt; 'test@example.com',\n    'password' =&gt; 'secret123', \/\/ \u6a5f\u5bc6\u60c5\u5831\n    'token' =&gt; 'abcdef123456', \/\/ \u6a5f\u5bc6\u60c5\u5831\n    'preferences' =&gt; [\n        'theme' =&gt; 'dark',\n        'notifications' =&gt; [\n            'email' =&gt; true,\n            'token' =&gt; 'notification-token' \/\/ \u30cd\u30b9\u30c8\u3055\u308c\u305f\u6a5f\u5bc6\u60c5\u5831\n        ]\n    ]\n];\n\n$safeJson = encodeWithoutSensitiveData($userData);\necho $safeJson;\n\/\/ \u51fa\u529b: {\"id\":123,\"name\":\"\u30c6\u30b9\u30c8\u30e6\u30fc\u30b6\u30fc\",\"email\":\"test@example.com\",\"password\":\"***\",\"token\":\"***\",\"preferences\":{\"theme\":\"dark\",\"notifications\":{\"email\":true,\"token\":\"***\"}}}\n<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-53\">\u30b7\u30ea\u30a2\u30e9\u30a4\u30ba\u5bfe\u8c61\u306e\u30ab\u30b9\u30bf\u30de\u30a4\u30ba<\/h4>\n\n\n\n<p>\u6a5f\u5bc6\u60c5\u5831\u3092\u542b\u3080\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092JSON\u5909\u63db\u3059\u308b\u5834\u5408\u3001<code>JsonSerializable<\/code>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u5b9f\u88c5\u3059\u308b\u3053\u3068\u3067\u3001\u30b7\u30ea\u30a2\u30e9\u30a4\u30ba\u3059\u308b\u60c5\u5831\u3092\u5236\u5fa1\u3067\u304d\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/**\n * \u6a5f\u5bc6\u60c5\u5831\u3092\u542b\u3080\u30e6\u30fc\u30b6\u30fc\u30af\u30e9\u30b9\n *\/\nclass User implements JsonSerializable {\n    private $id;\n    private $username;\n    private $email;\n    private $password;  \/\/ \u6a5f\u5bc6\u60c5\u5831\n    private $apiToken;  \/\/ \u6a5f\u5bc6\u60c5\u5831\n    \n    \/\/ \u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u306a\u3069\u7701\u7565\n    \n    \/**\n     * JSON\u5909\u63db\u6642\u306b\u547c\u3070\u308c\u308b\u30e1\u30bd\u30c3\u30c9\n     *\/\n    public function jsonSerialize() {\n        \/\/ \u516c\u958b\u3057\u3066\u3082\u5b89\u5168\u306a\u30c7\u30fc\u30bf\u306e\u307f\u3092\u8fd4\u3059\n        return [\n            'id' =&gt; $this-&gt;id,\n            'username' =&gt; $this-&gt;username,\n            'email' =&gt; $this-&gt;email\n            \/\/ \u30d1\u30b9\u30ef\u30fc\u30c9\u3068\u30c8\u30fc\u30af\u30f3\u306f\u610f\u56f3\u7684\u306b\u9664\u5916\n        ];\n    }\n    \n    \/**\n     * \u7ba1\u7406\u8005\u5411\u3051\u306b\u5b8c\u5168\u306a\u30c7\u30fc\u30bf\u3092\u8fd4\u3059\u30e1\u30bd\u30c3\u30c9\n     *\/\n    public function getFullDataForAdmin() {\n        return [\n            'id' =&gt; $this-&gt;id,\n            'username' =&gt; $this-&gt;username,\n            'email' =&gt; $this-&gt;email,\n            'password_hash' =&gt; $this-&gt;password, \/\/ \u30cf\u30c3\u30b7\u30e5\u5024\u306e\u307f\n            'api_token' =&gt; $this-&gt;apiToken\n        ];\n    }\n}\n\n\/\/ \u4f7f\u7528\u4f8b\n$user = new User(1, 'testuser', 'test@example.com', 'hashed_password', 'secret_token');\n\n\/\/ \u901a\u5e38\u306eJSON\u5316\uff08\u6a5f\u5bc6\u60c5\u5831\u306f\u542b\u307e\u308c\u306a\u3044\uff09\n$json = json_encode($user);\necho $json; \/\/ {\"id\":1,\"username\":\"testuser\",\"email\":\"test@example.com\"}\n\n\/\/ \u7ba1\u7406\u8005\u5411\u3051\u306e\u5b8c\u5168\u306a\u30c7\u30fc\u30bf\uff08\u5fc5\u8981\u306a\u5834\u5408\u306e\u307f\uff09\nif (userIsAdmin()) {\n    $adminJson = json_encode($user-&gt;getFullDataForAdmin());\n    echo $adminJson; \/\/ \u6a5f\u5bc6\u60c5\u5831\u3092\u542b\u3080\n}\n<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-54\">\u30c7\u30d0\u30c3\u30b0\u51fa\u529b\u306e\u7ba1\u7406<\/h4>\n\n\n\n<p>\u958b\u767a\u74b0\u5883\u3068\u30d7\u30ed\u30c0\u30af\u30b7\u30e7\u30f3\u74b0\u5883\u3067\u51fa\u529b\u5185\u5bb9\u3092\u5207\u308a\u66ff\u3048\u308b\u65b9\u6cd5\u3082\u91cd\u8981\u3067\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/**\n * \u74b0\u5883\u306b\u5fdc\u3058\u305f\u30a8\u30e9\u30fc\u30ec\u30b9\u30dd\u30f3\u30b9\u3092\u8fd4\u3059\n *\n * @param Exception $e \u4f8b\u5916\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\n * @return array \u30a8\u30e9\u30fc\u30ec\u30b9\u30dd\u30f3\u30b9\u914d\u5217\n *\/\nfunction createErrorResponse($e) {\n    $isDevelopment = ($_SERVER['SERVER_NAME'] === 'localhost' || strpos($_SERVER['SERVER_NAME'], '.local') !== false);\n    \n    if ($isDevelopment) {\n        \/\/ \u958b\u767a\u74b0\u5883\uff1a\u8a73\u7d30\u306a\u60c5\u5831\u3092\u542b\u3081\u308b\n        return [\n            'error' =&gt; true,\n            'message' =&gt; $e-&gt;getMessage(),\n            'code' =&gt; $e-&gt;getCode(),\n            'file' =&gt; $e-&gt;getFile(),\n            'line' =&gt; $e-&gt;getLine(),\n            'trace' =&gt; $e-&gt;getTraceAsString()\n        ];\n    } else {\n        \/\/ \u672c\u756a\u74b0\u5883\uff1a\u6700\u5c0f\u9650\u306e\u60c5\u5831\u306e\u307f\n        \/\/ \u30a8\u30e9\u30fc\u3092\u30ed\u30b0\u306b\u8a18\u9332\uff08\u5b9f\u969b\u306e\u5b9f\u88c5\u306f\u30ed\u30ae\u30f3\u30b0\u30b7\u30b9\u30c6\u30e0\u306b\u4f9d\u5b58\uff09\n        error_log($e-&gt;getMessage() . ' in ' . $e-&gt;getFile() . ' on line ' . $e-&gt;getLine());\n        \n        return [\n            'error' =&gt; true,\n            'message' =&gt; '\u30b7\u30b9\u30c6\u30e0\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u307e\u3057\u305f\u3002',\n            'reference_id' =&gt; uniqid('err_') \/\/ \u8ffd\u8de1\u7528\u306e\u53c2\u7167ID\n        ];\n    }\n}\n\n\/\/ \u4f7f\u7528\u4f8b\ntry {\n    \/\/ \u4f55\u3089\u304b\u306e\u51e6\u7406\n    throw new Exception('\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u63a5\u7d9a\u30a8\u30e9\u30fc\uff1a\u8a8d\u8a3c\u60c5\u5831\u304c\u7121\u52b9\u3067\u3059');\n} catch (Exception $e) {\n    $errorResponse = createErrorResponse($e);\n    header('Content-Type: application\/json');\n    echo json_encode($errorResponse, JSON_UNESCAPED_UNICODE);\n    exit;\n}\n<\/pre>\n\n\n\n<p>\u3053\u308c\u306b\u3088\u308a\u3001\u958b\u767a\u4e2d\u306f\u8a73\u7d30\u306a\u30a8\u30e9\u30fc\u60c5\u5831\u3092\u78ba\u8a8d\u3067\u304d\u308b\u4e00\u65b9\u3001\u672c\u756a\u74b0\u5883\u3067\u306f\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30ea\u30b9\u30af\u3092\u8efd\u6e1b\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-55\">\u5b89\u5168\u306aAPI\u8a2d\u8a08\u306b\u304a\u3051\u308bjson_encode\u306e\u5f79\u5272<\/h3>\n\n\n\n<p>Web\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u304a\u3044\u3066\u3001API\u306f\u3057\u3070\u3057\u3070\u6700\u3082\u8106\u5f31\u306a\u30dd\u30a4\u30f3\u30c8\u306b\u306a\u308a\u307e\u3059\u3002<code>json_encode()<\/code>\u3092\u4f7f\u7528\u3057\u305fAPI\u8a2d\u8a08\u306b\u304a\u3044\u3066\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u78ba\u4fdd\u3059\u308b\u305f\u3081\u306e\u91cd\u8981\u306a\u30dd\u30a4\u30f3\u30c8\u3092\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-56\">Content-Type\u691c\u8a3c\u306e\u5fb9\u5e95<\/h4>\n\n\n\n<p>API\u30a8\u30f3\u30c9\u30dd\u30a4\u30f3\u30c8\u3067\u306f\u3001\u9069\u5207\u306aContent-Type\u306e\u691c\u8a3c\u3068\u8a2d\u5b9a\u304c\u91cd\u8981\u3067\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/**\n * \u5b89\u5168\u306aAPI\u30a8\u30f3\u30c9\u30dd\u30a4\u30f3\u30c8\u306e\u57fa\u672c\u5b9f\u88c5\n *\/\nfunction handleApiRequest() {\n    \/\/ \u30ea\u30af\u30a8\u30b9\u30c8\u30e1\u30bd\u30c3\u30c9\u306e\u691c\u8a3c\n    $method = $_SERVER['REQUEST_METHOD'];\n    if ($method !== 'POST' &amp;&amp; $method !== 'GET') {\n        \/\/ POST\u3068GET\u4ee5\u5916\u306e\u30e1\u30bd\u30c3\u30c9\u306fOPTIONS\u30ea\u30af\u30a8\u30b9\u30c8\u3068\u3057\u3066\u6271\u3046\uff08CORS\u5bfe\u5fdc\uff09\n        if ($method === 'OPTIONS') {\n            header('Access-Control-Allow-Origin: *');\n            header('Access-Control-Allow-Methods: POST, GET, OPTIONS');\n            header('Access-Control-Allow-Headers: Content-Type, Authorization');\n            exit;\n        }\n        \n        \/\/ \u8a31\u53ef\u3055\u308c\u3066\u3044\u306a\u3044\u30e1\u30bd\u30c3\u30c9\n        header('HTTP\/1.1 405 Method Not Allowed');\n        header('Content-Type: application\/json');\n        echo json_encode(['error' =&gt; 'Method not allowed']);\n        exit;\n    }\n    \n    \/\/ Content-Type\u306e\u691c\u8a3c\uff08POST\u6642\uff09\n    if ($method === 'POST') {\n        $contentType = isset($_SERVER['CONTENT_TYPE']) ? $_SERVER['CONTENT_TYPE'] : '';\n        if (strpos($contentType, 'application\/json') === false) {\n            header('HTTP\/1.1 415 Unsupported Media Type');\n            header('Content-Type: application\/json');\n            echo json_encode(['error' =&gt; 'Content-Type must be application\/json']);\n            exit;\n        }\n        \n        \/\/ JSON\u30ea\u30af\u30a8\u30b9\u30c8\u30dc\u30c7\u30a3\u306e\u53d6\u5f97\u3068\u691c\u8a3c\n        $inputJSON = file_get_contents('php:\/\/input');\n        $input = json_decode($inputJSON, true);\n        \n        if ($input === null &amp;&amp; json_last_error() !== JSON_ERROR_NONE) {\n            header('HTTP\/1.1 400 Bad Request');\n            header('Content-Type: application\/json');\n            echo json_encode(['error' =&gt; 'Invalid JSON: ' . json_last_error_msg()]);\n            exit;\n        }\n    } else {\n        \/\/ GET\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u53d6\u5f97\n        $input = $_GET;\n    }\n    \n    \/\/ \u4ee5\u964d\u3001\u5165\u529b\u30c7\u30fc\u30bf\uff08$input\uff09\u3092\u4f7f\u3063\u305f\u51e6\u7406\n    try {\n        $result = processApiRequest($input, $method);\n        \n        \/\/ \u6210\u529f\u30ec\u30b9\u30dd\u30f3\u30b9\n        header('Content-Type: application\/json; charset=utf-8');\n        echo json_encode($result, JSON_UNESCAPED_UNICODE);\n    } catch (Exception $e) {\n        \/\/ \u30a8\u30e9\u30fc\u30ec\u30b9\u30dd\u30f3\u30b9\n        header('HTTP\/1.1 500 Internal Server Error');\n        header('Content-Type: application\/json; charset=utf-8');\n        echo json_encode(['error' =&gt; $e-&gt;getMessage()], JSON_UNESCAPED_UNICODE);\n    }\n}\n<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-57\">\u5165\u529b\u30c7\u30fc\u30bf\u306e\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3<\/h4>\n\n\n\n<p>JSON\u5f62\u5f0f\u3067\u53d7\u3051\u53d6\u3063\u305f\u30c7\u30fc\u30bf\u306f\u3001\u5fc5\u305a\u53b3\u683c\u306b\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/**\n * API\u30ea\u30af\u30a8\u30b9\u30c8\u30c7\u30fc\u30bf\u3092\u691c\u8a3c\u3059\u308b\n *\n * @param array $data \u691c\u8a3c\u3059\u308b\u30c7\u30fc\u30bf\n * @param array $requiredFields \u5fc5\u9808\u30d5\u30a3\u30fc\u30eb\u30c9\n * @return array [\u691c\u8a3c\u7d50\u679c, \u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8]\n *\/\nfunction validateApiInput($data, $requiredFields = []) {\n    $errors = [];\n    \n    \/\/ \u5fc5\u9808\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u30c1\u30a7\u30c3\u30af\n    foreach ($requiredFields as $field) {\n        if (!isset($data[$field]) || $data[$field] === '') {\n            $errors[] = \"Field '{$field}' is required\";\n        }\n    }\n    \n    \/\/ \u5404\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u578b\u3084\u7bc4\u56f2\u3092\u691c\u8a3c\n    if (isset($data['email']) &amp;&amp; !filter_var($data['email'], FILTER_VALIDATE_EMAIL)) {\n        $errors[] = \"Invalid email format\";\n    }\n    \n    if (isset($data['age']) &amp;&amp; (!is_numeric($data['age']) || $data['age'] &lt; 0 || $data['age'] &gt; 120)) {\n        $errors[] = \"Age must be between 0 and 120\";\n    }\n    \n    \/\/ \u6587\u5b57\u5217\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u9577\u3055\u30c1\u30a7\u30c3\u30af\u3068\u30b5\u30cb\u30bf\u30a4\u30ba\n    if (isset($data['name'])) {\n        if (strlen($data['name']) &gt; 100) {\n            $errors[] = \"Name must be less than 100 characters\";\n        }\n        \/\/ HTML\u30bf\u30b0\u306e\u9664\u53bb\n        $data['name'] = htmlspecialchars($data['name'], ENT_QUOTES, 'UTF-8');\n    }\n    \n    return [empty($errors), $errors, $data];\n}\n\n\/**\n * \u30e6\u30fc\u30b6\u30fc\u767b\u9332API\u306e\u4f8b\n *\/\nfunction registerUser() {\n    \/\/ POST\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\n    $inputJSON = file_get_contents('php:\/\/input');\n    $input = json_decode($inputJSON, true);\n    \n    \/\/ JSON\u30c7\u30fc\u30bf\u306e\u30c1\u30a7\u30c3\u30af\n    if ($input === null &amp;&amp; json_last_error() !== JSON_ERROR_NONE) {\n        header('HTTP\/1.1 400 Bad Request');\n        header('Content-Type: application\/json');\n        echo json_encode(['error' =&gt; 'Invalid JSON: ' . json_last_error_msg()]);\n        exit;\n    }\n    \n    \/\/ \u5165\u529b\u30c7\u30fc\u30bf\u306e\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\n    list($isValid, $errors, $sanitizedData) = validateApiInput($input, ['name', 'email', 'password']);\n    \n    if (!$isValid) {\n        header('HTTP\/1.1 400 Bad Request');\n        header('Content-Type: application\/json');\n        echo json_encode(['error' =&gt; 'Validation failed', 'details' =&gt; $errors]);\n        exit;\n    }\n    \n    try {\n        \/\/ \u30e6\u30fc\u30b6\u30fc\u767b\u9332\u51e6\u7406\uff08\u7701\u7565\uff09\n        $userId = createUser($sanitizedData);\n        \n        \/\/ \u6210\u529f\u30ec\u30b9\u30dd\u30f3\u30b9\n        header('Content-Type: application\/json');\n        echo json_encode([\n            'success' =&gt; true,\n            'message' =&gt; 'User registered successfully',\n            'user_id' =&gt; $userId\n        ]);\n    } catch (Exception $e) {\n        \/\/ \u30a8\u30e9\u30fc\u30ec\u30b9\u30dd\u30f3\u30b9\n        header('HTTP\/1.1 500 Internal Server Error');\n        header('Content-Type: application\/json');\n        echo json_encode(['error' =&gt; 'Registration failed: ' . $e-&gt;getMessage()]);\n    }\n}\n<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-58\">RESTful API\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/h4>\n\n\n\n<p>API\u8a2d\u8a08\u306b\u304a\u3044\u3066\u306f\u3001\u4ee5\u4e0b\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3092\u8003\u616e\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u9069\u5207\u306a\u8a8d\u8a3c\u3068\u8a8d\u53ef<\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li>Bearer \u30c8\u30fc\u30af\u30f3\u3001OAuth\u3001API\u30ad\u30fc\u306a\u3069\u306e\u8a8d\u8a3c\u30e1\u30ab\u30cb\u30ba\u30e0\u3092\u5b9f\u88c5<\/li>\n\n\n\n<li>\u5404\u30a8\u30f3\u30c9\u30dd\u30a4\u30f3\u30c8\u3067\u306e\u30a2\u30af\u30bb\u30b9\u6a29\u9650\u30c1\u30a7\u30c3\u30af<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u30ec\u30fc\u30c8\u5236\u9650\u306e\u5b9f\u88c5<\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li>\u30d6\u30eb\u30fc\u30c8\u30d5\u30a9\u30fc\u30b9\u653b\u6483\u3084DoS\u653b\u6483\u304b\u3089\u4fdd\u8b77\u3059\u308b\u305f\u3081\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u5236\u9650<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>HTTPS\u901a\u4fe1\u306e\u5f37\u5236<\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li>\u5168\u3066\u306eAPI\u901a\u4fe1\u3092\u6697\u53f7\u5316<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>CORS\uff08Cross-Origin Resource Sharing\uff09\u30dd\u30ea\u30b7\u30fc\u306e\u9069\u5207\u306a\u8a2d\u5b9a<\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li>\u8a31\u53ef\u3055\u308c\u305f\u30aa\u30ea\u30b8\u30f3\u304b\u3089\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u306e\u307f\u3092\u53d7\u3051\u4ed8\u3051\u308b<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>CSRF\u30c8\u30fc\u30af\u30f3\u306e\u691c\u8a3c<\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li>\u30af\u30ed\u30b9\u30b5\u30a4\u30c8\u30ea\u30af\u30a8\u30b9\u30c8\u30d5\u30a9\u30fc\u30b8\u30a7\u30ea\u3092\u9632\u6b62<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/**\n * \u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3092\u9069\u7528\u3057\u305fAPI\u30a8\u30f3\u30c9\u30dd\u30a4\u30f3\u30c8\n *\/\nfunction secureApiEndpoint() {\n    \/\/ HTTPS\u306e\u5f37\u5236\n    if (!isset($_SERVER['HTTPS']) || $_SERVER['HTTPS'] !== 'on') {\n        header('HTTP\/1.1 403 Forbidden');\n        header('Content-Type: application\/json');\n        echo json_encode(['error' =&gt; 'HTTPS is required for this API']);\n        exit;\n    }\n    \n    \/\/ CORS\u30d8\u30c3\u30c0\u30fc\u306e\u8a2d\u5b9a\n    $allowedOrigins = ['https:\/\/example.com', 'https:\/\/app.example.com'];\n    $origin = isset($_SERVER['HTTP_ORIGIN']) ? $_SERVER['HTTP_ORIGIN'] : '';\n    \n    if (in_array($origin, $allowedOrigins)) {\n        header('Access-Control-Allow-Origin: ' . $origin);\n    } else {\n        header('Access-Control-Allow-Origin: ' . $allowedOrigins[0]);\n    }\n    \n    header('Access-Control-Allow-Methods: GET, POST, OPTIONS');\n    header('Access-Control-Allow-Headers: Content-Type, Authorization');\n    \n    \/\/ OPTIONS\u30ea\u30af\u30a8\u30b9\u30c8\u306e\u51e6\u7406\uff08\u30d7\u30ea\u30d5\u30e9\u30a4\u30c8\u30ea\u30af\u30a8\u30b9\u30c8\uff09\n    if ($_SERVER['REQUEST_METHOD'] === 'OPTIONS') {\n        exit;\n    }\n    \n    \/\/ \u8a8d\u8a3c\u51e6\u7406\n    $authHeader = isset($_SERVER['HTTP_AUTHORIZATION']) ? $_SERVER['HTTP_AUTHORIZATION'] : '';\n    if (!preg_match('\/Bearer\\s(\\S+)\/', $authHeader, $matches)) {\n        header('HTTP\/1.1 401 Unauthorized');\n        header('Content-Type: application\/json');\n        echo json_encode(['error' =&gt; 'Authorization header is required']);\n        exit;\n    }\n    \n    $token = $matches[1];\n    if (!validateToken($token)) {\n        header('HTTP\/1.1 401 Unauthorized');\n        header('Content-Type: application\/json');\n        echo json_encode(['error' =&gt; 'Invalid or expired token']);\n        exit;\n    }\n    \n    \/\/ \u30ec\u30fc\u30c8\u5236\u9650\u306e\u30c1\u30a7\u30c3\u30af\n    if (isRateLimitExceeded($token)) {\n        header('HTTP\/1.1 429 Too Many Requests');\n        header('Content-Type: application\/json');\n        header('Retry-After: 60'); \/\/ 60\u79d2\u5f8c\u306b\u518d\u8a66\u884c\n        echo json_encode(['error' =&gt; 'Rate limit exceeded. Try again later.']);\n        exit;\n    }\n    \n    \/\/ \u4ee5\u964d\u3001\u8a8d\u8a3c\u6e08\u307fAPI\u30ea\u30af\u30a8\u30b9\u30c8\u306e\u51e6\u7406\n    $inputJSON = file_get_contents('php:\/\/input');\n    $input = json_decode($inputJSON, true);\n    \n    \/\/ \u5165\u529b\u691c\u8a3c\u3001\u51e6\u7406\u3001\u30ec\u30b9\u30dd\u30f3\u30b9\u751f\u6210\u306a\u3069\n    \/\/ ...\n    \n    \/\/ \u6210\u529f\u30ec\u30b9\u30dd\u30f3\u30b9\n    header('Content-Type: application\/json; charset=utf-8');\n    echo json_encode(['success' =&gt; true, 'data' =&gt; $result], JSON_UNESCAPED_UNICODE);\n}\n<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-59\">JSON Web Token (JWT) \u306e\u5b89\u5168\u306a\u6271\u3044<\/h4>\n\n\n\n<p>JWT\u8a8d\u8a3c\u3092\u4f7f\u7528\u3059\u308b\u5834\u5408\u306e\u5b89\u5168\u306a\u5b9f\u88c5\u4f8b\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/**\n * JWT\u3092\u4f7f\u7528\u3057\u305f\u5b89\u5168\u306aAPI\u30a2\u30af\u30bb\u30b9\n *\/\nfunction handleJwtProtectedApi() {\n    try {\n        \/\/ JWT\u30c8\u30fc\u30af\u30f3\u3092\u53d6\u5f97\u30fb\u691c\u8a3c\n        $jwt = getBearerToken();\n        $payload = verifyJwt($jwt);\n        \n        \/\/ \u30e6\u30fc\u30b6\u30fcID\u3092\u53d6\u5f97\n        $userId = $payload['sub'];\n        \n        \/\/ API\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u51e6\u7406\n        $result = processApiRequest($userId);\n        \n        \/\/ \u6210\u529f\u30ec\u30b9\u30dd\u30f3\u30b9\n        header('Content-Type: application\/json');\n        echo json_encode($result, JSON_UNESCAPED_UNICODE);\n    } catch (Exception $e) {\n        \/\/ \u30a8\u30e9\u30fc\u30ec\u30b9\u30dd\u30f3\u30b9\n        $statusCode = 500;\n        \n        \/\/ \u30a8\u30e9\u30fc\u30bf\u30a4\u30d7\u306b\u5fdc\u3058\u3066\u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9\u3092\u5909\u66f4\n        if ($e instanceof TokenExpiredException) {\n            $statusCode = 401; \/\/ Unauthorized\n        } elseif ($e instanceof InvalidTokenException) {\n            $statusCode = 403; \/\/ Forbidden\n        } elseif ($e instanceof ValidationException) {\n            $statusCode = 400; \/\/ Bad Request\n        }\n        \n        header('HTTP\/1.1 ' . $statusCode);\n        header('Content-Type: application\/json');\n        echo json_encode(['error' =&gt; $e-&gt;getMessage()], JSON_UNESCAPED_UNICODE);\n    }\n}\n<\/pre>\n\n\n\n<p>\u4ee5\u4e0a\u306e\u3088\u3046\u306b\u3001<code>json_encode()<\/code>\u3092\u4f7f\u7528\u3057\u305f\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u958b\u767a\u306b\u304a\u3044\u3066\u306f\u3001\u30c7\u30fc\u30bf\u306e\u5185\u5bb9\u3084\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u306b\u5fdc\u3058\u305f\u9069\u5207\u306a\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u304c\u5fc5\u8981\u3067\u3059\u3002\u7279\u306b\u3001\u30e6\u30fc\u30b6\u30fc\u5165\u529b\u30c7\u30fc\u30bf\u306e\u51e6\u7406\u3001\u6a5f\u5bc6\u60c5\u5831\u306e\u6271\u3044\u3001API\u30ec\u30b9\u30dd\u30f3\u30b9\u306e\u69cb\u7bc9\u306b\u304a\u3044\u3066\u306f\u3001\u5341\u5206\u306a\u6ce8\u610f\u3092\u6255\u3044\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u306b\u5f93\u3046\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-60\">json_encode\u3068\u4ed6\u306ePHP\u95a2\u6570\u306e\u9023\u643a\u6d3b\u7528\u6cd5<\/h2>\n\n\n\n<p><code>json_encode()<\/code>\u306f\u5358\u72ec\u3067\u3082\u5f37\u529b\u306a\u95a2\u6570\u3067\u3059\u304c\u3001\u4ed6\u306ePHP\u95a2\u6570\u3068\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u52b9\u679c\u7684\u306a\u30c7\u30fc\u30bf\u51e6\u7406\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002\u3053\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001<code>json_encode()<\/code>\u3068\u4ed6\u306ePHP\u95a2\u6570\u3092\u9023\u643a\u3055\u305b\u305f\u5b9f\u8df5\u7684\u306a\u6d3b\u7528\u6cd5\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-61\">json_decode\u3068\u306e\u7d44\u307f\u5408\u308f\u305b\u306b\u3088\u308b\u53cc\u65b9\u5411\u5909\u63db<\/h3>\n\n\n\n<p><code>json_encode()<\/code>\u3068<code>json_decode()<\/code>\u306f\u5bfe\u3092\u306a\u3059\u95a2\u6570\u3067\u3001PHP\u306e\u914d\u5217\u30fb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3068JSON\u6587\u5b57\u5217\u306e\u9593\u3067\u53cc\u65b9\u5411\u306e\u5909\u63db\u3092\u884c\u3044\u307e\u3059\u3002\u3053\u308c\u3089\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u69d8\u3005\u306a\u30c7\u30fc\u30bf\u51e6\u7406\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-62\">\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9<\/h4>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ PHP\u30c7\u30fc\u30bf\u69cb\u9020\u304b\u3089JSON\u3078\n$phpArray = [\n    'name' =&gt; '\u5c71\u7530\u592a\u90ce',\n    'age' =&gt; 30,\n    'hobbies' =&gt; ['\u8aad\u66f8', '\u6620\u753b\u9451\u8cde']\n];\n$json = json_encode($phpArray, JSON_UNESCAPED_UNICODE);\necho $json . \"\\n\";\n\/\/ \u51fa\u529b: {\"name\":\"\u5c71\u7530\u592a\u90ce\",\"age\":30,\"hobbies\":[\"\u8aad\u66f8\",\"\u6620\u753b\u9451\u8cde\"]}\n\n\/\/ JSON\u304b\u3089PHP\u30c7\u30fc\u30bf\u69cb\u9020\u3078\n$decodedArray = json_decode($json, true); \/\/ \u7b2c2\u5f15\u6570true\u3067\u9023\u60f3\u914d\u5217\u3068\u3057\u3066\u53d6\u5f97\nvar_dump($decodedArray);\n\/\/ \u51fa\u529b: array(3) { [\"name\"]=&gt; string(12) \"\u5c71\u7530\u592a\u90ce\" [\"age\"]=&gt; int(30) [\"hobbies\"]=&gt; array(2) { [0]=&gt; string(6) \"\u8aad\u66f8\" [1]=&gt; string(12) \"\u6620\u753b\u9451\u8cde\" } }\n\n\/\/ \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3068\u3057\u3066\u53d6\u5f97\u3059\u308b\u5834\u5408\n$decodedObject = json_decode($json); \/\/ \u7b2c2\u5f15\u6570\u3092\u7701\u7565\u307e\u305f\u306f false\nvar_dump($decodedObject);\n\/\/ \u51fa\u529b: object(stdClass)#1 (3) { [\"name\"]=&gt; string(12) \"\u5c71\u7530\u592a\u90ce\" [\"age\"]=&gt; int(30) [\"hobbies\"]=&gt; array(2) { [0]=&gt; string(6) \"\u8aad\u66f8\" [1]=&gt; string(12) \"\u6620\u753b\u9451\u8cde\" } }\n<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-63\">\u30c7\u30fc\u30bf\u306e\u30c7\u30a3\u30fc\u30d7\u30b3\u30d4\u30fc<\/h4>\n\n\n\n<p>PHP\u3067\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3084\u914d\u5217\u306e\u30c7\u30a3\u30fc\u30d7\u30b3\u30d4\u30fc\u3092\u884c\u3046\u969b\u306b\u3001<code>json_encode()<\/code>\u3068<code>json_decode()<\/code>\u306e\u7d44\u307f\u5408\u308f\u305b\u304c\u4fbf\u5229\u3067\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/**\n * \u914d\u5217\u3084\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30c7\u30a3\u30fc\u30d7\u30b3\u30d4\u30fc\u3092\u884c\u3046\n *\n * @param mixed $data \u30b3\u30d4\u30fc\u5143\u306e\u30c7\u30fc\u30bf\n * @return mixed \u30b3\u30d4\u30fc\u3055\u308c\u305f\u30c7\u30fc\u30bf\n *\/\nfunction deepCopy($data) {\n    return json_decode(json_encode($data), true);\n}\n\n\/\/ \u4f7f\u7528\u4f8b\n$original = [\n    'user' =&gt; [\n        'name' =&gt; '\u4f50\u85e4\u82b1\u5b50',\n        'settings' =&gt; [\n            'theme' =&gt; 'dark',\n            'notifications' =&gt; true\n        ]\n    ]\n];\n\n$copy = deepCopy($original);\n$copy['user']['settings']['theme'] = 'light';\n\necho \"Original theme: \" . $original['user']['settings']['theme'] . \"\\n\";\necho \"Copy theme: \" . $copy['user']['settings']['theme'] . \"\\n\";\n\/\/ \u51fa\u529b:\n\/\/ Original theme: dark\n\/\/ Copy theme: light\n<\/pre>\n\n\n\n<p>\u3053\u306e\u65b9\u6cd5\u306f\u975e\u5e38\u306b\u30b7\u30f3\u30d7\u30eb\u3067\u3059\u304c\u3001\u3044\u304f\u3064\u304b\u6ce8\u610f\u70b9\u304c\u3042\u308a\u307e\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30ea\u30bd\u30fc\u30b9\u578b\u3084\u30af\u30ed\u30fc\u30b8\u30e3\u30fc\u306a\u3069\u306fJSON\u5316\u3067\u304d\u306a\u3044\u305f\u3081\u3001\u305d\u308c\u3089\u306f\u5931\u308f\u308c\u307e\u3059<\/li>\n\n\n\n<li>\u5faa\u74b0\u53c2\u7167\u3092\u542b\u3080\u30c7\u30fc\u30bf\u69cb\u9020\u3067\u306f\u30a8\u30e9\u30fc\u306b\u306a\u308a\u307e\u3059<\/li>\n\n\n\n<li><code>DateTime<\/code>\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306a\u3069\u306e\u7279\u6b8a\u306a\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306f\u5358\u7d14\u306a\u6587\u5b57\u5217\u306b\u5909\u63db\u3055\u308c\u307e\u3059<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-64\">\u30c7\u30fc\u30bf\u306e\u6bd4\u8f03\u3068\u5dee\u5206\u62bd\u51fa<\/h4>\n\n\n\n<p>2\u3064\u306e\u30c7\u30fc\u30bf\u69cb\u9020\u306e\u5dee\u5206\u3092\u62bd\u51fa\u3059\u308b\u969b\u306b\u3082\u3001JSON\u5909\u63db\u304c\u5f79\u7acb\u3061\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/**\n * 2\u3064\u306e\u914d\u5217\u306e\u5dee\u5206\u3092\u62bd\u51fa\u3059\u308b\n *\n * @param array $array1 \u6bd4\u8f03\u5143\u306e\u914d\u5217\n * @param array $array2 \u6bd4\u8f03\u5148\u306e\u914d\u5217\n * @return array \u5dee\u5206\u60c5\u5831\n *\/\nfunction arrayDiff($array1, $array2) {\n    $result = [\n        'added' =&gt; [],\n        'removed' =&gt; [],\n        'changed' =&gt; []\n    ];\n    \n    \/\/ \u8ffd\u52a0\u30fb\u5909\u66f4\u3055\u308c\u305f\u9805\u76ee\u3092\u691c\u51fa\n    foreach ($array2 as $key =&gt; $value) {\n        if (!array_key_exists($key, $array1)) {\n            $result['added'][$key] = $value;\n        } elseif (is_array($value) &amp;&amp; is_array($array1[$key])) {\n            $subDiff = arrayDiff($array1[$key], $value);\n            if (!empty($subDiff['added']) || !empty($subDiff['removed']) || !empty($subDiff['changed'])) {\n                $result['changed'][$key] = $subDiff;\n            }\n        } elseif ($array1[$key] !== $value) {\n            $result['changed'][$key] = [\n                'from' =&gt; $array1[$key],\n                'to' =&gt; $value\n            ];\n        }\n    }\n    \n    \/\/ \u524a\u9664\u3055\u308c\u305f\u9805\u76ee\u3092\u691c\u51fa\n    foreach ($array1 as $key =&gt; $value) {\n        if (!array_key_exists($key, $array2)) {\n            $result['removed'][$key] = $value;\n        }\n    }\n    \n    return $result;\n}\n\n\/\/ \u4f7f\u7528\u4f8b\n$oldData = [\n    'name' =&gt; '\u7530\u4e2d',\n    'email' =&gt; 'tanaka@example.com',\n    'settings' =&gt; [\n        'theme' =&gt; 'light',\n        'notifications' =&gt; true\n    ]\n];\n\n$newData = [\n    'name' =&gt; '\u7530\u4e2d\u4e00\u90ce',  \/\/ \u5909\u66f4\u3042\u308a\n    'email' =&gt; 'tanaka@example.com',\n    'phone' =&gt; '090-1234-5678',  \/\/ \u8ffd\u52a0\u3042\u308a\n    'settings' =&gt; [\n        'theme' =&gt; 'dark',  \/\/ \u5909\u66f4\u3042\u308a\n        'notifications' =&gt; true\n    ]\n];\n\n$diff = arrayDiff($oldData, $newData);\necho json_encode($diff, JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE);\n\/* \u51fa\u529b:\n{\n    \"added\": {\n        \"phone\": \"090-1234-5678\"\n    },\n    \"removed\": [],\n    \"changed\": {\n        \"name\": {\n            \"from\": \"\u7530\u4e2d\",\n            \"to\": \"\u7530\u4e2d\u4e00\u90ce\"\n        },\n        \"settings\": {\n            \"changed\": {\n                \"theme\": {\n                    \"from\": \"light\",\n                    \"to\": \"dark\"\n                }\n            }\n        }\n    }\n}\n*\/\n<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-65\">\u30c7\u30fc\u30bf\u5909\u63db\u3068\u30d5\u30a9\u30fc\u30de\u30c3\u30c8<\/h4>\n\n\n\n<p>\u7570\u306a\u308b\u30b7\u30b9\u30c6\u30e0\u9593\u3067\u30c7\u30fc\u30bf\u3092\u3084\u308a\u53d6\u308a\u3059\u308b\u969b\u306b\u3001JSON\u5f62\u5f0f\u3092\u4e2d\u9593\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3068\u3057\u3066\u4f7f\u7528\u3059\u308b\u65b9\u6cd5\u3082\u4e00\u822c\u7684\u3067\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/**\n * XML\u30c7\u30fc\u30bf\u3092PHP\u914d\u5217\u306b\u5909\u63db\u3057\u3001\u3055\u3089\u306bJSON\u306b\u5909\u63db\u3059\u308b\n *\n * @param string $xmlString XML\u6587\u5b57\u5217\n * @return string JSON\u6587\u5b57\u5217\n *\/\nfunction xmlToJson($xmlString) {\n    \/\/ XML\u3092\u914d\u5217\u306b\u5909\u63db\n    $xml = simplexml_load_string($xmlString);\n    $xmlArray = json_decode(json_encode($xml), true);\n    \n    \/\/ \u6574\u5f62\u3057\u305fJSON\u3092\u8fd4\u3059\n    return json_encode($xmlArray, JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE);\n}\n\n\/\/ \u4f7f\u7528\u4f8b\n$xmlData = &lt;&lt;&lt;XML\n&lt;?xml version=\"1.0\" encoding=\"UTF-8\"?&gt;\n&lt;user&gt;\n  &lt;name&gt;\u4f50\u85e4\u6b21\u90ce&lt;\/name&gt;\n  &lt;email&gt;sato@example.com&lt;\/email&gt;\n  &lt;hobbies&gt;\n    &lt;hobby&gt;\u8aad\u66f8&lt;\/hobby&gt;\n    &lt;hobby&gt;\u65c5\u884c&lt;\/hobby&gt;\n  &lt;\/hobbies&gt;\n&lt;\/user&gt;\nXML;\n\n$jsonData = xmlToJson($xmlData);\necho $jsonData;\n\/* \u51fa\u529b:\n{\n    \"name\": \"\u4f50\u85e4\u6b21\u90ce\",\n    \"email\": \"sato@example.com\",\n    \"hobbies\": {\n        \"hobby\": [\n            \"\u8aad\u66f8\",\n            \"\u65c5\u884c\"\n        ]\n    }\n}\n*\/\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-66\">serialize\/unserialize\u3068\u306e\u9055\u3044\u3068\u4f7f\u3044\u5206\u3051<\/h3>\n\n\n\n<p>PHP\u306b\u306f\u3001\u30c7\u30fc\u30bf\u3092\u30b7\u30ea\u30a2\u30e9\u30a4\u30ba\u3059\u308b\u65b9\u6cd5\u3068\u3057\u3066<code>json_encode()\/json_decode()<\/code>\u3068<code>serialize()\/unserialize()<\/code>\u306e2\u3064\u306e\u4e3b\u8981\u306a\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u308c\u305e\u308c\u306b\u9577\u6240\u3068\u77ed\u6240\u304c\u3042\u308a\u307e\u3059\u306e\u3067\u3001\u7528\u9014\u306b\u5fdc\u3058\u3066\u9069\u5207\u306b\u4f7f\u3044\u5206\u3051\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-67\">\u57fa\u672c\u7684\u306a\u9055\u3044<\/h4>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30c6\u30b9\u30c8\u7528\u306e\u30c7\u30fc\u30bf\u69cb\u9020\n$data = [\n    'name' =&gt; '\u5c71\u7530\u592a\u90ce',\n    'age' =&gt; 30,\n    'date' =&gt; new DateTime('2023-01-15'),\n    'items' =&gt; [1, 2, 3]\n];\n\n\/\/ serialize\u306b\u3088\u308b\u30b7\u30ea\u30a2\u30e9\u30a4\u30ba\n$serialized = serialize($data);\necho \"Serialized: \" . $serialized . \"\\n\";\n\/\/ \u51fa\u529b: a:4:{s:4:\"name\";s:12:\"\u5c71\u7530\u592a\u90ce\";s:3:\"age\";i:30;s:4:\"date\";O:8:\"DateTime\":3:{s:4:\"date\";s:26:\"2023-01-15 00:00:00.000000\";s:13:\"timezone_type\";i:3;s:8:\"timezone\";s:3:\"UTC\";}s:5:\"items\";a:3:{i:0;i:1;i:1;i:2;i:2;i:3;}}\n\n\/\/ json_encode\u306b\u3088\u308b\u30b7\u30ea\u30a2\u30e9\u30a4\u30ba\ntry {\n    $json = json_encode($data, JSON_UNESCAPED_UNICODE);\n    echo \"JSON: \" . $json . \"\\n\";\n} catch (Exception $e) {\n    echo \"JSON encoding error: \" . $e-&gt;getMessage() . \"\\n\";\n}\n\/\/ \u51fa\u529b: JSON: {\"name\":\"\u5c71\u7530\u592a\u90ce\",\"age\":30,\"date\":{\"date\":\"2023-01-15 00:00:00.000000\",\"timezone_type\":3,\"timezone\":\"UTC\"},\"items\":[1,2,3]}\n\n\/\/ \u5fa9\u5143\n$unserializedData = unserialize($serialized);\n$jsonDecodedData = json_decode($json, true);\n\n\/\/ DateTime\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u78ba\u8a8d\nvar_dump($unserializedData['date']);\n\/\/ \u51fa\u529b: object(DateTime)#2 (3) { ... } (\u5b8c\u5168\u306b\u5fa9\u5143\u3055\u308c\u3066\u3044\u308b)\n\nvar_dump($jsonDecodedData['date']);\n\/\/ \u51fa\u529b: array(3) { [\"date\"]=&gt; string(26) \"2023-01-15 00:00:00.000000\" [\"timezone_type\"]=&gt; int(3) [\"timezone\"]=&gt; string(3) \"UTC\" } (\u914d\u5217\u306b\u5909\u63db\u3055\u308c\u3066\u3044\u308b)\n<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-68\">\u4e3b\u306a\u9055\u3044\u306e\u6bd4\u8f03\u8868<\/h4>\n\n\n<div id=\"id-f476b891-3ba2-46f3-8af5-69372295fcd5\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u6a5f\u80fd\/\u7279\u6027<\/th><th>json_encode\/json_decode<\/th><th>serialize\/unserialize<\/th><\/tr><\/thead><tbody><tr><td>PHP\u56fa\u6709\u306e\u578b\u306e\u4fdd\u6301<\/td><td>\u00d7 (\u5168\u3066\u57fa\u672c\u578b\u306b\u5909\u63db)<\/td><td>\u25cb (\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u578b\u306a\u3069\u3082\u4fdd\u6301)<\/td><\/tr><tr><td>\u4ed6\u8a00\u8a9e\u3068\u306e\u4e92\u63db\u6027<\/td><td>\u25cb (\u591a\u304f\u306e\u8a00\u8a9e\u304cJSON\u3092\u30b5\u30dd\u30fc\u30c8)<\/td><td>\u00d7 (PHP\u5c02\u7528\u5f62\u5f0f)<\/td><\/tr><tr><td>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9<\/td><td>\u4e00\u822c\u7684\u306b\u9ad8\u901f<\/td><td>\u8907\u96d1\u306a\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u306f\u3088\u308a\u52b9\u7387\u7684<\/td><\/tr><tr><td>\u4eba\u9593\u53ef\u8aad\u6027<\/td><td>\u826f\u597d<\/td><td>\u4f4e\u3044<\/td><\/tr><tr><td>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3<\/td><td>\u6bd4\u8f03\u7684\u5b89\u5168<\/td><td>unserialize\u306f\u6ce8\u610f\u304c\u5fc5\u8981<\/td><\/tr><tr><td>\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u518d\u69cb\u7bc9<\/td><td>\u57fa\u672c\u7684\u306a\u69cb\u9020\u306e\u307f<\/td><td>\u5b8c\u5168\u518d\u69cb\u7bc9\uff08\u30e1\u30bd\u30c3\u30c9\u542b\u3080\uff09<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<h4 class=\"wp-block-heading\" id=\"i-69\">\u4f7f\u3044\u5206\u3051\u306e\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3<\/h4>\n\n\n\n<p><strong>json_encode\/json_decode\u304c\u9069\u3057\u3066\u3044\u308b\u5834\u5408\uff1a<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u4ed6\u306e\u30b7\u30b9\u30c6\u30e0\u3084\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\u3068\u30c7\u30fc\u30bf\u3092\u5171\u6709\u3059\u308b\u5834\u5408<\/li>\n\n\n\n<li>\u30c7\u30fc\u30bf\u3092\u4eba\u9593\u304c\u8aad\u307f\u66f8\u304d\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u5834\u5408<\/li>\n\n\n\n<li>Web\u30d9\u30fc\u30b9\u306e\u30c7\u30fc\u30bf\u4ea4\u63db\uff08API\u3001Ajax\u901a\u4fe1\u306a\u3069\uff09<\/li>\n\n\n\n<li>\u30b7\u30f3\u30d7\u30eb\u306a\u30c7\u30fc\u30bf\u69cb\u9020\uff08\u57fa\u672c\u578b\u3001\u914d\u5217\uff09\u306e\u307f\u3092\u6271\u3046\u5834\u5408<\/li>\n<\/ol>\n\n\n\n<p><strong>serialize\/unserialize\u304c\u9069\u3057\u3066\u3044\u308b\u5834\u5408\uff1a<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>PHP\u56fa\u6709\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u69cb\u9020\u3092\u4fdd\u6301\u3057\u305f\u3044\u5834\u5408<\/li>\n\n\n\n<li>\u8907\u96d1\u306a\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u30b0\u30e9\u30d5\u3092\u5b8c\u5168\u306b\u4fdd\u5b58\u3057\u305f\u3044\u5834\u5408<\/li>\n\n\n\n<li>PHP\u5185\u90e8\u3067\u306e\u307f\u30c7\u30fc\u30bf\u3092\u4f7f\u7528\u3057\u3001\u578b\u60c5\u5831\u3092\u5b8c\u5168\u306b\u4fdd\u6301\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u5834\u5408<\/li>\n\n\n\n<li>PHP\u30bb\u30c3\u30b7\u30e7\u30f3\u3067\u306e\u4f7f\u7528\uff08\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u306fserialize\u304c\u4f7f\u7528\u3055\u308c\u308b\uff09<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-70\">\u30cf\u30a4\u30d6\u30ea\u30c3\u30c9\u30a2\u30d7\u30ed\u30fc\u30c1<\/h4>\n\n\n\n<p>\u4e21\u65b9\u306e\u5229\u70b9\u3092\u6d3b\u304b\u3059\u65b9\u6cd5\u3082\u3042\u308a\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/**\n * \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092JSON\u5316\u3057\u3064\u3064\u3001\u578b\u60c5\u5831\u3092\u4fdd\u6301\u3059\u308b\n *\n * @param mixed $data \u30a8\u30f3\u30b3\u30fc\u30c9\u3059\u308b\u30c7\u30fc\u30bf\n * @return string JSON\u30a8\u30f3\u30b3\u30fc\u30c9\u3055\u308c\u305f\u6587\u5b57\u5217\n *\/\nfunction enhancedJsonEncode($data) {\n    \/\/ \u7279\u6b8a\u306a\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u63a2\u3057\u3066\u51e6\u7406\n    $processedData = processSpecialObjects($data);\n    \n    \/\/ JSON\u30a8\u30f3\u30b3\u30fc\u30c9\n    return json_encode($processedData, JSON_UNESCAPED_UNICODE);\n}\n\n\/**\n * \u7279\u6b8a\u306a\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u51e6\u7406\u3059\u308b\u518d\u5e30\u95a2\u6570\n *\n * @param mixed $data \u51e6\u7406\u3059\u308b\u30c7\u30fc\u30bf\n * @return mixed \u51e6\u7406\u5f8c\u306e\u30c7\u30fc\u30bf\n *\/\nfunction processSpecialObjects($data) {\n    if (is_object($data)) {\n        \/\/ DateTime\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\n        if ($data instanceof DateTime) {\n            return [\n                '__type' =&gt; 'DateTime',\n                'iso' =&gt; $data-&gt;format('c'),\n                'timestamp' =&gt; $data-&gt;getTimestamp()\n            ];\n        }\n        \n        \/\/ \u305d\u306e\u4ed6\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\n        $result = [\n            '__type' =&gt; get_class($data)\n        ];\n        \n        \/\/ \u30d1\u30d6\u30ea\u30c3\u30af\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u53d6\u5f97\n        $vars = get_object_vars($data);\n        foreach ($vars as $key =&gt; $value) {\n            $result[$key] = processSpecialObjects($value);\n        }\n        \n        return $result;\n    }\n    \n    \/\/ \u914d\u5217\u306e\u5834\u5408\u306f\u518d\u5e30\u7684\u306b\u51e6\u7406\n    if (is_array($data)) {\n        $result = [];\n        foreach ($data as $key =&gt; $value) {\n            $result[$key] = processSpecialObjects($value);\n        }\n        return $result;\n    }\n    \n    \/\/ \u305d\u306e\u4ed6\u306e\u30c7\u30fc\u30bf\u578b\u306f\u305d\u306e\u307e\u307e\u8fd4\u3059\n    return $data;\n}\n\n\/**\n * \u62e1\u5f35JSON\u30c7\u30fc\u30bf\u3092\u30c7\u30b3\u30fc\u30c9\u3057\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u5fa9\u5143\u3059\u308b\n *\n * @param string $json JSON\u30c7\u30fc\u30bf\n * @return mixed \u30c7\u30b3\u30fc\u30c9\u3055\u308c\u305f\u30c7\u30fc\u30bf\n *\/\nfunction enhancedJsonDecode($json) {\n    \/\/ \u901a\u5e38\u306e\u30c7\u30b3\u30fc\u30c9\n    $data = json_decode($json, true);\n    \n    \/\/ \u7279\u6b8a\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u5fa9\u5143\n    return restoreSpecialObjects($data);\n}\n\n\/**\n * \u7279\u6b8a\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u5fa9\u5143\u3059\u308b\u518d\u5e30\u95a2\u6570\n *\n * @param mixed $data \u51e6\u7406\u3059\u308b\u30c7\u30fc\u30bf\n * @return mixed \u51e6\u7406\u5f8c\u306e\u30c7\u30fc\u30bf\n *\/\nfunction restoreSpecialObjects($data) {\n    if (is_array($data) &amp;&amp; isset($data['__type'])) {\n        \/\/ \u578b\u60c5\u5831\u304c\u3042\u308b\u5834\u5408\n        $type = $data['__type'];\n        \n        \/\/ DateTime\u306e\u5fa9\u5143\n        if ($type === 'DateTime' &amp;&amp; isset($data['iso'])) {\n            return new DateTime($data['iso']);\n        }\n        \n        \/\/ \u4ed6\u306e\u578b\u306e\u5fa9\u5143\u30ed\u30b8\u30c3\u30af\u3092\u3053\u3053\u306b\u8ffd\u52a0\n        \/\/ ...\n    }\n    \n    \/\/ \u914d\u5217\u306e\u5834\u5408\u306f\u518d\u5e30\u7684\u306b\u51e6\u7406\n    if (is_array($data)) {\n        foreach ($data as $key =&gt; $value) {\n            $data[$key] = restoreSpecialObjects($value);\n        }\n    }\n    \n    return $data;\n}\n\n\/\/ \u4f7f\u7528\u4f8b\n$testData = [\n    'name' =&gt; '\u7530\u4e2d',\n    'created_at' =&gt; new DateTime('2023-01-15 10:30:00'),\n    'points' =&gt; [10, 20, 30]\n];\n\n\/\/ \u62e1\u5f35JSON\u30a8\u30f3\u30b3\u30fc\u30c9\n$enhancedJson = enhancedJsonEncode($testData);\necho $enhancedJson . \"\\n\";\n\/\/ \u51fa\u529b: {\"name\":\"\u7530\u4e2d\",\"created_at\":{\"__type\":\"DateTime\",\"iso\":\"2023-01-15T10:30:00+00:00\",\"timestamp\":1673778600},\"points\":[10,20,30]}\n\n\/\/ \u62e1\u5f35JSON\u30c7\u30b3\u30fc\u30c9\n$restored = enhancedJsonDecode($enhancedJson);\nvar_dump($restored['created_at']);\n\/\/ \u51fa\u529b: object(DateTime)#3 (3) { ... } (DateTime\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3068\u3057\u3066\u5fa9\u5143\u3055\u308c\u3066\u3044\u308b)\n<\/pre>\n\n\n\n<p>\u3053\u306e\u3088\u3046\u306a\u30cf\u30a4\u30d6\u30ea\u30c3\u30c9\u30a2\u30d7\u30ed\u30fc\u30c1\u306f\u3001\u7570\u306a\u308b\u30b7\u30b9\u30c6\u30e0\u9593\u3067\u30c7\u30fc\u30bf\u3092\u5171\u6709\u3057\u306a\u304c\u3089\u3001PHP\u5074\u3067\u306f\u578b\u60c5\u5831\u3092\u4fdd\u6301\u3057\u305f\u3044\u5834\u5408\u306b\u4fbf\u5229\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-71\">file_put_contents\u3068\u7d44\u307f\u5408\u308f\u305b\u305fJSON\u30d5\u30a1\u30a4\u30eb\u64cd\u4f5c<\/h3>\n\n\n\n<p>JSON\u30c7\u30fc\u30bf\u3092\u30d5\u30a1\u30a4\u30eb\u3068\u3057\u3066\u4fdd\u5b58\u30fb\u8aad\u307f\u8fbc\u307f\u3059\u308b\u65b9\u6cd5\u306f\u3001\u30b7\u30f3\u30d7\u30eb\u306a\u30c7\u30fc\u30bf\u30b9\u30c8\u30ec\u30fc\u30b8\u3084\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u3068\u3057\u3066\u975e\u5e38\u306b\u4fbf\u5229\u3067\u3059\u3002PHP\u306e<code>file_put_contents<\/code>\u304a\u3088\u3073<code>file_get_contents<\/code>\u95a2\u6570\u3068\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u52b9\u7387\u7684\u306aJSON\u30d5\u30a1\u30a4\u30eb\u64cd\u4f5c\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-72\">\u57fa\u672c\u7684\u306aJSON\u30d5\u30a1\u30a4\u30eb\u4fdd\u5b58\u3068\u8aad\u307f\u8fbc\u307f<\/h4>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/**\n * \u30c7\u30fc\u30bf\u3092JSON\u30d5\u30a1\u30a4\u30eb\u3068\u3057\u3066\u4fdd\u5b58\n *\n * @param string $filePath \u4fdd\u5b58\u5148\u30d5\u30a1\u30a4\u30eb\u30d1\u30b9\n * @param mixed $data \u4fdd\u5b58\u3059\u308b\u30c7\u30fc\u30bf\n * @param bool $pretty \u6574\u5f62\u3059\u308b\u304b\u3069\u3046\u304b\n * @return bool \u6210\u529f\u3057\u305f\u304b\u3069\u3046\u304b\n *\/\nfunction saveJsonFile($filePath, $data, $pretty = true) {\n    \/\/ \u30a8\u30f3\u30b3\u30fc\u30c9\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u8a2d\u5b9a\n    $options = JSON_UNESCAPED_UNICODE;\n    if ($pretty) {\n        $options |= JSON_PRETTY_PRINT;\n    }\n    \n    \/\/ JSON\u306b\u5909\u63db\n    $jsonData = json_encode($data, $options);\n    \n    \/\/ \u30a8\u30f3\u30b3\u30fc\u30c9\u30a8\u30e9\u30fc\u30c1\u30a7\u30c3\u30af\n    if ($jsonData === false) {\n        return false;\n    }\n    \n    \/\/ \u30d5\u30a1\u30a4\u30eb\u306b\u4fdd\u5b58\uff08\u6392\u4ed6\u7684\u30ed\u30c3\u30af\u3092\u4f7f\u7528\uff09\n    return file_put_contents($filePath, $jsonData, LOCK_EX) !== false;\n}\n\n\/**\n * JSON\u30d5\u30a1\u30a4\u30eb\u304b\u3089\u30c7\u30fc\u30bf\u3092\u8aad\u307f\u8fbc\u3080\n *\n * @param string $filePath \u30d5\u30a1\u30a4\u30eb\u30d1\u30b9\n * @param bool $asArray \u9023\u60f3\u914d\u5217\u3068\u3057\u3066\u53d6\u5f97\u3059\u308b\u304b\n * @param mixed $default \u30d5\u30a1\u30a4\u30eb\u304c\u5b58\u5728\u3057\u306a\u3044\u5834\u5408\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\n * @return mixed \u8aad\u307f\u8fbc\u3093\u3060\u30c7\u30fc\u30bf\n *\/\nfunction loadJsonFile($filePath, $asArray = true, $default = null) {\n    \/\/ \u30d5\u30a1\u30a4\u30eb\u304c\u5b58\u5728\u3057\u306a\u3044\u5834\u5408\u306f\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u3092\u8fd4\u3059\n    if (!file_exists($filePath)) {\n        return $default;\n    }\n    \n    \/\/ \u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u8fbc\u3080\n    $jsonData = file_get_contents($filePath);\n    \n    \/\/ JSON\u30c7\u30b3\u30fc\u30c9\n    $data = json_decode($jsonData, $asArray);\n    \n    \/\/ \u30c7\u30b3\u30fc\u30c9\u30a8\u30e9\u30fc\u30c1\u30a7\u30c3\u30af\n    if ($data === null &amp;&amp; json_last_error() !== JSON_ERROR_NONE) {\n        return $default;\n    }\n    \n    return $data;\n}\n\n\/\/ \u4f7f\u7528\u4f8b\uff1a\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u306e\u4fdd\u5b58\u3068\u8aad\u307f\u8fbc\u307f\n$config = [\n    'app_name' =&gt; 'My Application',\n    'debug' =&gt; true,\n    'database' =&gt; [\n        'host' =&gt; 'localhost',\n        'user' =&gt; 'app_user',\n        'password' =&gt; 'secure_password',\n        'name' =&gt; 'app_db'\n    ],\n    'mail' =&gt; [\n        'from' =&gt; 'noreply@example.com',\n        'host' =&gt; 'smtp.example.com',\n        'port' =&gt; 587\n    ]\n];\n\n\/\/ \u8a2d\u5b9a\u3092\u4fdd\u5b58\n$saved = saveJsonFile('config.json', $config);\necho $saved ? \"\u8a2d\u5b9a\u3092\u4fdd\u5b58\u3057\u307e\u3057\u305f\\n\" : \"\u8a2d\u5b9a\u306e\u4fdd\u5b58\u306b\u5931\u6557\u3057\u307e\u3057\u305f\\n\";\n\n\/\/ \u8a2d\u5b9a\u3092\u8aad\u307f\u8fbc\u307f\n$loadedConfig = loadJsonFile('config.json');\necho \"\u30a2\u30d7\u30ea\u540d: \" . $loadedConfig['app_name'] . \"\\n\";\necho \"\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30db\u30b9\u30c8: \" . $loadedConfig['database']['host'] . \"\\n\";\n<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-73\">JSON\u30d5\u30a1\u30a4\u30eb\u3092\u4f7f\u7528\u3057\u305f\u30b7\u30f3\u30d7\u30eb\u306a\u30c7\u30fc\u30bf\u30b9\u30c8\u30a2<\/h4>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/**\n * \u30b7\u30f3\u30d7\u30eb\u306aJSON\u30d9\u30fc\u30b9\u306e\u30c7\u30fc\u30bf\u30b9\u30c8\u30a2\u30af\u30e9\u30b9\n *\/\nclass JsonStore {\n    protected $filePath;\n    protected $data;\n    \n    \/**\n     * \u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\n     *\n     * @param string $filePath JSON\u30d5\u30a1\u30a4\u30eb\u306e\u30d1\u30b9\n     *\/\n    public function __construct($filePath) {\n        $this-&gt;filePath = $filePath;\n        $this-&gt;load();\n    }\n    \n    \/**\n     * \u30d5\u30a1\u30a4\u30eb\u304b\u3089\u30c7\u30fc\u30bf\u3092\u8aad\u307f\u8fbc\u3080\n     *\n     * @return bool \u6210\u529f\u3057\u305f\u304b\u3069\u3046\u304b\n     *\/\n    public function load() {\n        if (file_exists($this-&gt;filePath)) {\n            $jsonData = file_get_contents($this-&gt;filePath);\n            $this-&gt;data = json_decode($jsonData, true);\n            return json_last_error() === JSON_ERROR_NONE;\n        } else {\n            $this-&gt;data = [];\n            return true;\n        }\n    }\n    \n    \/**\n     * \u30c7\u30fc\u30bf\u3092\u30d5\u30a1\u30a4\u30eb\u306b\u4fdd\u5b58\n     *\n     * @return bool \u6210\u529f\u3057\u305f\u304b\u3069\u3046\u304b\n     *\/\n    public function save() {\n        $jsonData = json_encode($this-&gt;data, JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE);\n        return file_put_contents($this-&gt;filePath, $jsonData, LOCK_EX) !== false;\n    }\n    \n    \/**\n     * \u5024\u3092\u53d6\u5f97\n     *\n     * @param string $key \u30ad\u30fc\n     * @param mixed $default \u30c7\u30d5\u30a9\u30eb\u30c8\u5024\n     * @return mixed \u5024\n     *\/\n    public function get($key, $default = null) {\n        return isset($this-&gt;data[$key]) ? $this-&gt;data[$key] : $default;\n    }\n    \n    \/**\n     * \u5024\u3092\u8a2d\u5b9a\n     *\n     * @param string $key \u30ad\u30fc\n     * @param mixed $value \u5024\n     * @param bool $autoSave \u81ea\u52d5\u4fdd\u5b58\u3059\u308b\u304b\u3069\u3046\u304b\n     * @return bool \u6210\u529f\u3057\u305f\u304b\u3069\u3046\u304b\n     *\/\n    public function set($key, $value, $autoSave = true) {\n        $this-&gt;data[$key] = $value;\n        return $autoSave ? $this-&gt;save() : true;\n    }\n    \n    \/**\n     * \u30ad\u30fc\u304c\u5b58\u5728\u3059\u308b\u304b\u78ba\u8a8d\n     *\n     * @param string $key \u30ad\u30fc\n     * @return bool \u5b58\u5728\u3059\u308b\u304b\u3069\u3046\u304b\n     *\/\n    public function has($key) {\n        return isset($this-&gt;data[$key]);\n    }\n    \n    \/**\n     * \u30ad\u30fc\u3092\u524a\u9664\n     *\n     * @param string $key \u30ad\u30fc\n     * @param bool $autoSave \u81ea\u52d5\u4fdd\u5b58\u3059\u308b\u304b\u3069\u3046\u304b\n     * @return bool \u6210\u529f\u3057\u305f\u304b\u3069\u3046\u304b\n     *\/\n    public function delete($key, $autoSave = true) {\n        if (isset($this-&gt;data[$key])) {\n            unset($this-&gt;data[$key]);\n            return $autoSave ? $this-&gt;save() : true;\n        }\n        return false;\n    }\n    \n    \/**\n     * \u3059\u3079\u3066\u306e\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\n     *\n     * @return array \u3059\u3079\u3066\u306e\u30c7\u30fc\u30bf\n     *\/\n    public function getAll() {\n        return $this-&gt;data;\n    }\n}\n\n\/\/ \u4f7f\u7528\u4f8b\uff1a\u30e6\u30fc\u30b6\u30fc\u8a2d\u5b9a\u306e\u7ba1\u7406\n$userSettings = new JsonStore('user_settings.json');\n\n\/\/ \u8a2d\u5b9a\u3092\u4fdd\u5b58\n$userSettings-&gt;set('theme', 'dark');\n$userSettings-&gt;set('sidebar', 'left');\n$userSettings-&gt;set('notifications', [\n    'email' =&gt; true,\n    'push' =&gt; false\n]);\n\n\/\/ \u8a2d\u5b9a\u3092\u8aad\u307f\u8fbc\u307f\n$theme = $userSettings-&gt;get('theme', 'light'); \/\/ \u30c7\u30d5\u30a9\u30eb\u30c8\u5024: light\n$notificationSettings = $userSettings-&gt;get('notifications', []);\n\necho \"\u73fe\u5728\u306e\u30c6\u30fc\u30de: \" . $theme . \"\\n\";\necho \"\u30e1\u30fc\u30eb\u901a\u77e5: \" . ($notificationSettings['email'] ? '\u30aa\u30f3' : '\u30aa\u30d5') . \"\\n\";\n<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-74\">\u30d5\u30a1\u30a4\u30eb\u30ed\u30c3\u30af\u3092\u4f7f\u7528\u3057\u305f\u540c\u6642\u30a2\u30af\u30bb\u30b9\u5236\u5fa1<\/h4>\n\n\n\n<p>\u8907\u6570\u306e\u30d7\u30ed\u30bb\u30b9\u304b\u3089\u540c\u6642\u306bJSON\u30d5\u30a1\u30a4\u30eb\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u5834\u5408\u306f\u3001\u30d5\u30a1\u30a4\u30eb\u30ed\u30c3\u30af\u3092\u4f7f\u3063\u3066\u7af6\u5408\u3092\u9632\u3050\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/**\n * \u30ed\u30c3\u30af\u6a5f\u80fd\u4ed8\u304d\u306eJSON\u30d5\u30a1\u30a4\u30eb\u64cd\u4f5c\n *\n * @param string $filePath \u30d5\u30a1\u30a4\u30eb\u30d1\u30b9\n * @param callable $callback \u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\n * @return mixed \u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u306e\u623b\u308a\u5024\n *\/\nfunction withJsonFileLock($filePath, $callback) {\n    \/\/ \u30d5\u30a1\u30a4\u30eb\u3092\u958b\u304f\uff08\u5b58\u5728\u3057\u306a\u3044\u5834\u5408\u306f\u4f5c\u6210\uff09\n    $fp = fopen($filePath, 'c+');\n    \n    if (!$fp) {\n        throw new Exception(\"\u30d5\u30a1\u30a4\u30eb\u3092\u958b\u3051\u307e\u305b\u3093\u3067\u3057\u305f: {$filePath}\");\n    }\n    \n    try {\n        \/\/ \u6392\u4ed6\u7684\u30ed\u30c3\u30af\u3092\u53d6\u5f97\n        if (!flock($fp, LOCK_EX)) {\n            throw new Exception(\"\u30d5\u30a1\u30a4\u30eb\u3092\u30ed\u30c3\u30af\u3067\u304d\u307e\u305b\u3093\u3067\u3057\u305f: {$filePath}\");\n        }\n        \n        \/\/ \u30d5\u30a1\u30a4\u30eb\u30b5\u30a4\u30ba\u304c\u30bc\u30ed\u306e\u5834\u5408\u306f\u7a7a\u306e\u914d\u5217\u3092\u521d\u671f\u5024\u3068\u3059\u308b\n        $fileSize = filesize($filePath);\n        if ($fileSize &gt; 0) {\n            $jsonData = fread($fp, $fileSize);\n            $data = json_decode($jsonData, true);\n            \n            if ($data === null &amp;&amp; json_last_error() !== JSON_ERROR_NONE) {\n                $data = [];\n            }\n        } else {\n            $data = [];\n        }\n        \n        \/\/ \u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\u3092\u5b9f\u884c\n        $result = $callback($data);\n        \n        \/\/ \u5909\u66f4\u304c\u3042\u308b\u5834\u5408\u306f\u30d5\u30a1\u30a4\u30eb\u306b\u66f8\u304d\u623b\u3059\n        if (isset($result) &amp;&amp; is_array($result)) {\n            \/\/ \u30d5\u30a1\u30a4\u30eb\u3092\u5207\u308a\u8a70\u3081\n            ftruncate($fp, 0);\n            rewind($fp);\n            \n            \/\/ \u65b0\u3057\u3044JSON\u30c7\u30fc\u30bf\u3092\u66f8\u304d\u8fbc\u3080\n            $newJsonData = json_encode($result, JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE);\n            fwrite($fp, $newJsonData);\n        }\n        \n        \/\/ \u30ed\u30c3\u30af\u3092\u89e3\u653e\uff08\u5ff5\u306e\u305f\u3081\uff09\n        flock($fp, LOCK_UN);\n        \n        return $result;\n    } finally {\n        \/\/ \u30d5\u30a1\u30a4\u30eb\u3092\u9589\u3058\u308b\n        fclose($fp);\n    }\n}\n\n\/\/ \u4f7f\u7528\u4f8b\uff1a\u30ab\u30a6\u30f3\u30bf\u30fc\u306e\u5897\u52a0\uff08\u8907\u6570\u30d7\u30ed\u30bb\u30b9\u304b\u3089\u306e\u540c\u6642\u30a2\u30af\u30bb\u30b9\u3092\u60f3\u5b9a\uff09\n$newCount = withJsonFileLock('counter.json', function($data) {\n    \/\/ \u73fe\u5728\u306e\u30ab\u30a6\u30f3\u30c8\u5024\u3092\u53d6\u5f97\n    $currentCount = isset($data['count']) ? $data['count'] : 0;\n    \n    \/\/ \u30ab\u30a6\u30f3\u30c8\u3092\u5897\u52a0\n    $data['count'] = $currentCount + 1;\n    $data['last_updated'] = date('Y-m-d H:i:s');\n    \n    \/\/ \u5909\u66f4\u3057\u305f\u30c7\u30fc\u30bf\u3092\u8fd4\u3059\uff08\u30d5\u30a1\u30a4\u30eb\u306b\u66f8\u304d\u623b\u3055\u308c\u308b\uff09\n    return $data;\n});\n\necho \"\u65b0\u3057\u3044\u30ab\u30a6\u30f3\u30c8: \" . $newCount['count'] . \"\\n\";\necho \"\u6700\u7d42\u66f4\u65b0: \" . $newCount['last_updated'] . \"\\n\";\n<\/pre>\n\n\n\n<p>\u3053\u306e\u3088\u3046\u306a\u65b9\u6cd5\u3067\u3001\u8907\u6570\u306e\u30d7\u30ed\u30bb\u30b9\u304c\u540c\u6642\u306b\u30d5\u30a1\u30a4\u30eb\u3092\u66f4\u65b0\u3057\u3088\u3046\u3068\u3057\u305f\u5834\u5408\u3067\u3082\u3001\u30c7\u30fc\u30bf\u306e\u6574\u5408\u6027\u3092\u4fdd\u3064\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u4ee5\u4e0a\u306e\u3088\u3046\u306b\u3001<code>json_encode()<\/code>\u3092\u4ed6\u306ePHP\u95a2\u6570\u3068\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u3055\u307e\u3056\u307e\u306a\u30c7\u30fc\u30bf\u51e6\u7406\u3084\u4fdd\u5b58\u306e\u30cb\u30fc\u30ba\u306b\u5bfe\u5fdc\u3067\u304d\u307e\u3059\u3002\u305d\u308c\u305e\u308c\u306e\u95a2\u6570\u306e\u7279\u6027\u3092\u7406\u89e3\u3057\u3066\u3001\u6700\u9069\u306a\u65b9\u6cd5\u3092\u9078\u629e\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-75\">\u307e\u3068\u3081\uff1aPHP json_encode\u3092\u6700\u5927\u9650\u306b\u6d3b\u7528\u3059\u308b\u305f\u3081\u306b<\/h2>\n\n\n\n<p>\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001PHP\u306e<code>json_encode()<\/code>\u95a2\u6570\u306b\u3064\u3044\u3066\u57fa\u672c\u304b\u3089\u5fdc\u7528\u307e\u3067\u5fb9\u5e95\u7684\u306b\u89e3\u8aac\u3057\u3066\u304d\u307e\u3057\u305f\u3002\u6700\u5f8c\u306b\u3001\u91cd\u8981\u306a\u30dd\u30a4\u30f3\u30c8\u3092\u632f\u308a\u8fd4\u308a\u306a\u304c\u3089\u3001\u5b9f\u52d9\u3067\u5f79\u7acb\u3064\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3092\u307e\u3068\u3081\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-76\">\u672c\u8a18\u4e8b\u3067\u89e3\u8aac\u3057\u305f\u91cd\u8981\u30dd\u30a4\u30f3\u30c8\u306e\u632f\u308a\u8fd4\u308a<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-77\">1. json_encode\u306e\u57fa\u672c<\/h4>\n\n\n\n<p><code>json_encode()<\/code>\u306f\u3001PHP\u306e\u30c7\u30fc\u30bf\u69cb\u9020\uff08\u914d\u5217\u3084\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\uff09\u3092JSON\u5f62\u5f0f\u306e\u6587\u5b57\u5217\u306b\u5909\u63db\u3059\u308b\u95a2\u6570\u3067\u3059\u3002\u57fa\u672c\u69cb\u6587\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">string json_encode(mixed $value, int $flags = 0, int $depth = 512)\n<\/pre>\n\n\n\n<p>\u4e3b\u306a\u30d1\u30e9\u30e1\u30fc\u30bf\u3068\u4f7f\u3044\u65b9\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>$value<\/code>: JSON\u5f62\u5f0f\u306b\u5909\u63db\u3057\u305f\u3044PHP\u306e\u5024<\/li>\n\n\n\n<li><code>$flags<\/code>: \u30a8\u30f3\u30b3\u30fc\u30c9\u65b9\u6cd5\u3092\u5236\u5fa1\u3059\u308b\u30d3\u30c3\u30c8\u30de\u30b9\u30af<\/li>\n\n\n\n<li><code>$depth<\/code>: JSON\u30a8\u30f3\u30b3\u30fc\u30c9\u3059\u308b\u6700\u5927\u306e\u518d\u5e30\u6df1\u5ea6<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-78\">2. \u30c7\u30fc\u30bf\u578b\u5909\u63db\u306e\u30eb\u30fc\u30eb<\/h4>\n\n\n\n<p>PHP\u306e\u30c7\u30fc\u30bf\u578b\u3068JSON\u5f62\u5f0f\u306e\u5bfe\u5fdc\u95a2\u4fc2\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\uff1a<\/p>\n\n\n<div id=\"id-28f45df5-2a81-4f1b-9974-dc77b084dc37\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>PHP\u30c7\u30fc\u30bf\u578b<\/th><th>JSON\u5f62\u5f0f<\/th><\/tr><\/thead><tbody><tr><td>NULL<\/td><td>null<\/td><\/tr><tr><td>boolean<\/td><td>boolean<\/td><\/tr><tr><td>integer\/float<\/td><td>number<\/td><\/tr><tr><td>string<\/td><td>string<\/td><\/tr><tr><td>\u7d22\u5f15\u914d\u5217<\/td><td>array<\/td><\/tr><tr><td>\u9023\u60f3\u914d\u5217<\/td><td>object<\/td><\/tr><tr><td>\u30aa\u30d6\u30b8\u30a7\u30af\u30c8<\/td><td>object (\u30d1\u30d6\u30ea\u30c3\u30af\u30d7\u30ed\u30d1\u30c6\u30a3\u306e\u307f)<\/td><\/tr><tr><td>\u30ea\u30bd\u30fc\u30b9\u578b<\/td><td>null<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<h4 class=\"wp-block-heading\" id=\"i-79\">3. \u30aa\u30d7\u30b7\u30e7\u30f3\u30d5\u30e9\u30b0\u306e\u6d3b\u7528<\/h4>\n\n\n\n<p>\u9069\u5207\u306a\u30aa\u30d7\u30b7\u30e7\u30f3\u30d5\u30e9\u30b0\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u67d4\u8edf\u306aJSON\u30a8\u30f3\u30b3\u30fc\u30c9\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>JSON_PRETTY_PRINT<\/code>: \u8aad\u307f\u3084\u3059\u3044\u5f62\u5f0f\u3067\u51fa\u529b<\/li>\n\n\n\n<li><code>JSON_UNESCAPED_UNICODE<\/code>: \u65e5\u672c\u8a9e\u306a\u3069\u306e\u6587\u5b57\u3092\u30a8\u30b9\u30b1\u30fc\u30d7\u305b\u305a\u306b\u51fa\u529b<\/li>\n\n\n\n<li><code>JSON_UNESCAPED_SLASHES<\/code>: \u30b9\u30e9\u30c3\u30b7\u30e5\u3092\u30a8\u30b9\u30b1\u30fc\u30d7\u3057\u306a\u3044<\/li>\n\n\n\n<li><code>JSON_FORCE_OBJECT<\/code>: \u914d\u5217\u3092\u5e38\u306b\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u5f62\u5f0f\u306b\u3059\u308b<\/li>\n\n\n\n<li><code>JSON_NUMERIC_CHECK<\/code>: \u6570\u5024\u6587\u5b57\u5217\u3092\u6570\u5024\u306b\u5909\u63db<\/li>\n\n\n\n<li>\u305d\u306e\u4ed6\u591a\u6570\u306e\u30d5\u30e9\u30b0<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-80\">4. \u767a\u751f\u3057\u304c\u3061\u306a\u30a8\u30e9\u30fc\u3068\u5bfe\u7b56<\/h4>\n\n\n\n<p><code>json_encode()<\/code>\u4f7f\u7528\u6642\u306b\u767a\u751f\u3059\u308b\u4e00\u822c\u7684\u306a\u554f\u984c\u3068\u89e3\u6c7a\u7b56\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>UTF-8\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u306e\u554f\u984c<\/li>\n\n\n\n<li>\u5faa\u74b0\u53c2\u7167\u306e\u51e6\u7406<\/li>\n\n\n\n<li>\u5927\u304d\u306a\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u306e\u30e1\u30e2\u30ea\u5236\u9650<\/li>\n\n\n\n<li>\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u30a2\u30af\u30bb\u30b9\u5236\u9650<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-81\">5. \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316<\/h4>\n\n\n\n<p>\u5927\u91cf\u30c7\u30fc\u30bf\u3092\u52b9\u7387\u7684\u306b\u51e6\u7406\u3059\u308b\u30c6\u30af\u30cb\u30c3\u30af\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30b9\u30c8\u30ea\u30fc\u30df\u30f3\u30b0\u51e6\u7406\u306b\u3088\u308b\u5927\u91cf\u30c7\u30fc\u30bf\u306eJSON\u30a8\u30f3\u30b3\u30fc\u30c9<\/li>\n\n\n\n<li>\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u306e\u524a\u6e1b<\/li>\n\n\n\n<li>\u751f\u6210\u3055\u308c\u308bJSON\u30b5\u30a4\u30ba\u306e\u6700\u5c0f\u5316<\/li>\n\n\n\n<li>\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u6d3b\u7528\u3057\u305f\u51e6\u7406\u901f\u5ea6\u306e\u5411\u4e0a<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-82\">6. \u5b9f\u8df5\u7684\u306a\u6d3b\u7528\u30d1\u30bf\u30fc\u30f3<\/h4>\n\n\n\n<p>\u5b9f\u969b\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u958b\u767a\u3067\u5f79\u7acb\u3064\u30d1\u30bf\u30fc\u30f3\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>RESTful API\u30ec\u30b9\u30dd\u30f3\u30b9\u306e\u4f5c\u6210<\/li>\n\n\n\n<li>Ajax\u30ea\u30af\u30a8\u30b9\u30c8\u3078\u306e\u30c7\u30fc\u30bf\u53d7\u3051\u6e21\u3057<\/li>\n\n\n\n<li>\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3078\u306eJSON\u4fdd\u5b58<\/li>\n\n\n\n<li>\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u7ba1\u7406<\/li>\n\n\n\n<li>\u591a\u8a00\u8a9e\u30c7\u30fc\u30bf\u306e\u7ba1\u7406<\/li>\n\n\n\n<li>\u30b0\u30e9\u30d5\u30a3\u30ab\u30eb\u30c7\u30fc\u30bf\u306e\u63d0\u4f9b<\/li>\n\n\n\n<li>WebSocket\u3067\u306e\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u901a\u4fe1<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-83\">7. \u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56<\/h4>\n\n\n\n<p>\u5b89\u5168\u306aJSON\u51e6\u7406\u306e\u305f\u3081\u306e\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>XSS\u653b\u6483\u306e\u9632\u6b62<\/li>\n\n\n\n<li>\u6a5f\u5bc6\u60c5\u5831\u306e\u6271\u3044<\/li>\n\n\n\n<li>API\u8a2d\u8a08\u306b\u304a\u3051\u308b\u5b89\u5168\u5bfe\u7b56<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-84\">8. \u4ed6\u306e\u95a2\u6570\u3068\u306e\u9023\u643a<\/h4>\n\n\n\n<p><code>json_encode()<\/code>\u3068\u4ed6\u306ePHP\u95a2\u6570\u3092\u7d44\u307f\u5408\u308f\u305b\u305f\u6d3b\u7528\u6cd5\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>json_decode()<\/code>\u3068\u306e\u53cc\u65b9\u5411\u5909\u63db<\/li>\n\n\n\n<li><code>serialize()\/unserialize()<\/code>\u3068\u306e\u4f7f\u3044\u5206\u3051<\/li>\n\n\n\n<li>\u30d5\u30a1\u30a4\u30eb\u64cd\u4f5c\u95a2\u6570\u3068\u306e\u9023\u643a<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-85\">\u5b9f\u52d9\u3067\u5f79\u7acb\u3064json_encode\u6d3b\u7528\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/h3>\n\n\n\n<p>\u5b9f\u969b\u306e\u958b\u767a\u73fe\u5834\u3067<code>json_encode()<\/code>\u3092\u4f7f\u3044\u3053\u306a\u3059\u305f\u3081\u306e10\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3092\u307e\u3068\u3081\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-86\">1. \u9069\u5207\u306a\u30a8\u30e9\u30fc\u51e6\u7406\u3092\u5e38\u306b\u5b9f\u88c5\u3059\u308b<\/h4>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">$json = json_encode($data, JSON_UNESCAPED_UNICODE);\nif ($json === false) {\n    \/\/ \u30a8\u30e9\u30fc\u51e6\u7406\n    $error = json_last_error_msg();\n    error_log(\"JSON encode error: {$error}\");\n    \/\/ \u9069\u5207\u306a\u30d5\u30a9\u30fc\u30eb\u30d0\u30c3\u30af\u51e6\u7406\u307e\u305f\u306f\u4f8b\u5916\u30b9\u30ed\u30fc\n    throw new Exception(\"JSON encoding failed: {$error}\");\n}\n<\/pre>\n\n\n\n<p>PHP 7.3\u4ee5\u964d\u3067\u306f\u3001\u4f8b\u5916\u3092\u30b9\u30ed\u30fc\u3059\u308b\u30aa\u30d7\u30b7\u30e7\u30f3\u3082\u5229\u7528\u3067\u304d\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">try {\n    $json = json_encode($data, JSON_THROW_ON_ERROR | JSON_UNESCAPED_UNICODE);\n} catch (JsonException $e) {\n    error_log(\"JSON encode error: \" . $e-&gt;getMessage());\n    \/\/ \u30a8\u30e9\u30fc\u51e6\u7406\n}\n<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-87\">2. \u30c7\u30d5\u30a9\u30eb\u30c8\u30d5\u30e9\u30b0\u30bb\u30c3\u30c8\u3092\u5b9a\u7fa9\u3057\u3066\u4e00\u8cab\u6027\u3092\u4fdd\u3064<\/h4>\n\n\n\n<p>\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5168\u4f53\u3067\u4e00\u8cab\u3057\u305fJSON\u51fa\u529b\u3092\u884c\u3046\u305f\u3081\u306b\u3001\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u30d5\u30e9\u30b0\u30bb\u30c3\u30c8\u3092\u5b9a\u7fa9\u3057\u307e\u3057\u3087\u3046\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5171\u901a\u306eJSON\u8a2d\u5b9a\ndefine('JSON_DEFAULT_FLAGS', JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);\n\n\/\/ \u958b\u767a\u74b0\u5883\u7528\u306e\u8a2d\u5b9a\ndefine('JSON_DEBUG_FLAGS', JSON_DEFAULT_FLAGS | JSON_PRETTY_PRINT);\n\n\/\/ \u4f7f\u7528\u4f8b\nfunction outputJson($data, $debug = false) {\n    $flags = $debug ? JSON_DEBUG_FLAGS : JSON_DEFAULT_FLAGS;\n    header('Content-Type: application\/json; charset=utf-8');\n    echo json_encode($data, $flags);\n}\n<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-88\">3. JsonSerializable\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u6d3b\u7528\u3059\u308b<\/h4>\n\n\n\n<p>\u8907\u96d1\u306a\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092JSON\u306b\u5909\u63db\u3059\u308b\u969b\u306f\u3001<code>JsonSerializable<\/code>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u5b9f\u88c5\u3059\u308b\u3053\u3068\u3067\u7d30\u304b\u3044\u5236\u5fa1\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class User implements JsonSerializable {\n    private $id;\n    private $username;\n    private $email;\n    private $password; \/\/ \u6a5f\u5bc6\u60c5\u5831\n    private $lastLogin;\n    \n    \/\/ \u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u306a\u3069\u7701\u7565\n    \n    public function jsonSerialize() {\n        return [\n            'id' =&gt; $this-&gt;id,\n            'username' =&gt; $this-&gt;username,\n            'email' =&gt; $this-&gt;email,\n            'last_login' =&gt; $this-&gt;lastLogin ? $this-&gt;lastLogin-&gt;format('Y-m-d H:i:s') : null\n            \/\/ \u30d1\u30b9\u30ef\u30fc\u30c9\u306f\u610f\u56f3\u7684\u306b\u9664\u5916\n        ];\n    }\n}\n\n\/\/ \u4f7f\u7528\u4f8b\n$user = new User(1, 'yamada', 'yamada@example.com', 'password123');\n$json = json_encode($user);\n\/\/ \u51fa\u529b: {\"id\":1,\"username\":\"yamada\",\"email\":\"yamada@example.com\",\"last_login\":null}\n<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-89\">4. \u5927\u91cf\u30c7\u30fc\u30bf\u306b\u306f\u5206\u5272\u51e6\u7406\u307e\u305f\u306f\u30b9\u30c8\u30ea\u30fc\u30df\u30f3\u30b0\u3092\u4f7f\u7528\u3059\u308b<\/h4>\n\n\n\n<p>\u5927\u304d\u306a\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u3092\u51e6\u7406\u3059\u308b\u5834\u5408\u306f\u3001\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u3092\u8003\u616e\u3057\u305f\u5b9f\u88c5\u3092\u5fc3\u304c\u3051\u307e\u3057\u3087\u3046\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/**\n * \u5927\u304d\u306a\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u3092\u30b9\u30c8\u30ea\u30fc\u30df\u30f3\u30b0\u51fa\u529b\u3059\u308b\n *\n * @param Closure $dataGenerator \u30c7\u30fc\u30bf\u3092\u751f\u6210\u3059\u308b\u30b8\u30a7\u30cd\u30ec\u30fc\u30bf\u95a2\u6570\n *\/\nfunction streamJsonResponse($dataGenerator) {\n    header('Content-Type: application\/json');\n    \n    \/\/ \u914d\u5217\u958b\u59cb\n    echo '[';\n    \n    $first = true;\n    foreach ($dataGenerator() as $item) {\n        \/\/ \u6700\u521d\u306e\u9805\u76ee\u4ee5\u5916\u306f\u30ab\u30f3\u30de\u3092\u4ed8\u3051\u308b\n        if ($first) {\n            $first = false;\n        } else {\n            echo ',';\n        }\n        \n        \/\/ \u5404\u30a2\u30a4\u30c6\u30e0\u3092\u30a8\u30f3\u30b3\u30fc\u30c9\n        echo json_encode($item, JSON_UNESCAPED_UNICODE);\n        \n        \/\/ \u51fa\u529b\u30d0\u30c3\u30d5\u30a1\u3092\u30d5\u30e9\u30c3\u30b7\u30e5\n        flush();\n    }\n    \n    \/\/ \u914d\u5217\u7d42\u4e86\n    echo ']';\n}\n\n\/\/ \u4f7f\u7528\u4f8b\uff1a\u5927\u91cf\u306e\u30e6\u30fc\u30b6\u30fc\u30c7\u30fc\u30bf\u3092\u51fa\u529b\nstreamJsonResponse(function() {\n    $pdo = new PDO('mysql:host=localhost;dbname=testdb', 'user', 'password');\n    $stmt = $pdo-&gt;query('SELECT id, name, email FROM users');\n    \n    while ($user = $stmt-&gt;fetch(PDO::FETCH_ASSOC)) {\n        yield $user; \/\/ 1\u30e6\u30fc\u30b6\u30fc\u305a\u3064\u751f\u6210\n    }\n});\n<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-90\">5. \u30c6\u30b9\u30c8\u74b0\u5883\u3067\u306f\u30c7\u30d0\u30c3\u30b0\u306b\u4fbf\u5229\u306a\u30d5\u30e9\u30b0\u3092\u4f7f\u7528\u3059\u308b<\/h4>\n\n\n\n<p>\u958b\u767a\u30fb\u30c6\u30b9\u30c8\u74b0\u5883\u3067\u306f\u3001\u30c7\u30d0\u30c3\u30b0\u306b\u5f79\u7acb\u3064\u30d5\u30e9\u30b0\u3092\u5229\u7528\u3057\u307e\u3057\u3087\u3046\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u74b0\u5883\u306b\u5fdc\u3058\u305fJSON\u51fa\u529b\u8a2d\u5b9a\nif ($_SERVER['APP_ENV'] === 'development') {\n    $jsonFlags = JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES;\n} else {\n    $jsonFlags = JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES;\n}\n\n$json = json_encode($data, $jsonFlags);\n<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-91\">6. RESTful API\u8a2d\u8a08\u3067\u306f\u30ec\u30b9\u30dd\u30f3\u30b9\u69cb\u9020\u3092\u6a19\u6e96\u5316\u3059\u308b<\/h4>\n\n\n\n<p>API\u8a2d\u8a08\u3067\u306f\u3001\u4e00\u8cab\u3057\u305f\u30ec\u30b9\u30dd\u30f3\u30b9\u69cb\u9020\u3092\u5b9a\u7fa9\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/**\n * \u6a19\u6e96\u5316\u3055\u308c\u305fAPI\u30ec\u30b9\u30dd\u30f3\u30b9\u3092\u751f\u6210\n *\n * @param mixed $data \u30ec\u30b9\u30dd\u30f3\u30b9\u30c7\u30fc\u30bf\n * @param string $message \u30e1\u30c3\u30bb\u30fc\u30b8\n * @param bool $success \u6210\u529f\u30d5\u30e9\u30b0\n * @param int $httpCode HTTP\u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9\n *\/\nfunction apiResponse($data = null, $message = '', $success = true, $httpCode = 200) {\n    http_response_code($httpCode);\n    \n    $response = [\n        'success' =&gt; $success,\n        'message' =&gt; $message,\n        'data' =&gt; $data,\n        'code' =&gt; $httpCode,\n        'timestamp' =&gt; time()\n    ];\n    \n    header('Content-Type: application\/json; charset=utf-8');\n    echo json_encode($response, JSON_UNESCAPED_UNICODE);\n    exit;\n}\n\n\/\/ \u6210\u529f\u30ec\u30b9\u30dd\u30f3\u30b9\u306e\u4f8b\napiResponse(['id' =&gt; 123, 'name' =&gt; '\u5c71\u7530\u592a\u90ce'], '\u767b\u9332\u304c\u5b8c\u4e86\u3057\u307e\u3057\u305f', true, 201);\n\n\/\/ \u30a8\u30e9\u30fc\u30ec\u30b9\u30dd\u30f3\u30b9\u306e\u4f8b\napiResponse(null, 'ID\u304c\u6307\u5b9a\u3055\u308c\u3066\u3044\u307e\u305b\u3093', false, 400);\n<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-92\">7. \u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u5e38\u306b\u8003\u616e\u3059\u308b<\/h4>\n\n\n\n<p>JSON\u30c7\u30fc\u30bf\u3092\u6271\u3046\u969b\u306f\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u6700\u512a\u5148\u306b\u8003\u3048\u307e\u3057\u3087\u3046\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/**\n * \u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u8003\u616e\u3057\u305fJSON\u51fa\u529b\n *\n * @param mixed $data \u51fa\u529b\u30c7\u30fc\u30bf\n *\/\nfunction outputSecureJson($data) {\n    \/\/ \u6a5f\u5bc6\u60c5\u5831\u3092\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\n    $filtered = filterSensitiveData($data);\n    \n    \/\/ CSRF\u30c8\u30fc\u30af\u30f3\u306a\u3069\u3092\u542b\u3081\u308b\n    $filtered['csrf_token'] = $_SESSION['csrf_token'];\n    \n    \/\/ \u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30d8\u30c3\u30c0\u30fc\u3092\u8a2d\u5b9a\n    header('Content-Type: application\/json; charset=utf-8');\n    header('X-Content-Type-Options: nosniff');\n    header('X-Frame-Options: DENY');\n    header('Content-Security-Policy: default-src \\'self\\'');\n    \n    echo json_encode($filtered, JSON_UNESCAPED_UNICODE);\n}\n\n\/**\n * \u6a5f\u5bc6\u60c5\u5831\u3092\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\n *\n * @param mixed $data \u5165\u529b\u30c7\u30fc\u30bf\n * @return mixed \u30d5\u30a3\u30eb\u30bf\u30fc\u5f8c\u306e\u30c7\u30fc\u30bf\n *\/\nfunction filterSensitiveData($data) {\n    $sensitiveFields = ['password', 'credit_card', 'token', 'secret'];\n    \n    if (is_array($data)) {\n        foreach ($data as $key =&gt; $value) {\n            if (in_array($key, $sensitiveFields)) {\n                $data[$key] = '***';\n            } elseif (is_array($value) || is_object($value)) {\n                $data[$key] = filterSensitiveData($value);\n            }\n        }\n    } elseif (is_object($data)) {\n        $vars = get_object_vars($data);\n        foreach ($vars as $key =&gt; $value) {\n            if (in_array($key, $sensitiveFields)) {\n                $data-&gt;$key = '***';\n            } elseif (is_array($value) || is_object($value)) {\n                $data-&gt;$key = filterSensitiveData($value);\n            }\n        }\n    }\n    \n    return $data;\n}\n<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-93\">8. \u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5074\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u8003\u616e\u3059\u308b<\/h4>\n\n\n\n<p>\u5927\u304d\u306aJSON\u30c7\u30fc\u30bf\u3092\u9001\u4fe1\u3059\u308b\u5834\u5408\u306f\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5074\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3082\u8003\u616e\u3057\u307e\u3057\u3087\u3046\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/**\n * \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u8003\u616e\u3057\u305fJSON\u51fa\u529b\n *\n * @param mixed $data \u51fa\u529b\u30c7\u30fc\u30bf\n *\/\nfunction outputOptimizedJson($data) {\n    \/\/ \u4e0d\u8981\u306a\u30c7\u30fc\u30bf\u3092\u524a\u9664\n    $optimized = removeUnnecessaryData($data);\n    \n    \/\/ \u5727\u7e2e\u3092\u9069\u7528\uff08\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304c\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u308b\u5834\u5408\uff09\n    $acceptEncoding = $_SERVER['HTTP_ACCEPT_ENCODING'] ?? '';\n    $useCompression = strpos($acceptEncoding, 'gzip') !== false;\n    \n    \/\/ JSON\u30a8\u30f3\u30b3\u30fc\u30c9\uff08\u6700\u5c0f\u30b5\u30a4\u30ba\uff09\n    $json = json_encode($optimized, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);\n    \n    if ($useCompression) {\n        header('Content-Encoding: gzip');\n        $json = gzencode($json, 9);\n    }\n    \n    header('Content-Type: application\/json; charset=utf-8');\n    header('Content-Length: ' . strlen($json));\n    echo $json;\n}\n<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-94\">9. \u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u52b9\u679c\u7684\u306b\u6d3b\u7528\u3059\u308b<\/h4>\n\n\n\n<p>\u983b\u7e41\u306b\u5909\u66f4\u3055\u308c\u306a\u3044JSON\u30c7\u30fc\u30bf\u306f\u3001\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u6d3b\u7528\u3057\u3066\u51e6\u7406\u52b9\u7387\u3092\u5411\u4e0a\u3055\u305b\u307e\u3057\u3087\u3046\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/**\n * \u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u4f7f\u7528\u3057\u305fJSON\u51fa\u529b\n *\n * @param string $cacheKey \u30ad\u30e3\u30c3\u30b7\u30e5\u30ad\u30fc\n * @param Closure $dataGenerator \u30c7\u30fc\u30bf\u751f\u6210\u95a2\u6570\n * @param int $ttl \u30ad\u30e3\u30c3\u30b7\u30e5\u6709\u52b9\u671f\u9593\uff08\u79d2\uff09\n *\/\nfunction outputCachedJson($cacheKey, $dataGenerator, $ttl = 3600) {\n    $cacheFile = sys_get_temp_dir() . '\/json_cache_' . md5($cacheKey) . '.json';\n    \n    \/\/ \u30ad\u30e3\u30c3\u30b7\u30e5\u304c\u6709\u52b9\u306a\u5834\u5408\u306f\u305d\u308c\u3092\u4f7f\u7528\n    if (file_exists($cacheFile) &amp;&amp; time() - filemtime($cacheFile) &lt; $ttl) {\n        header('Content-Type: application\/json; charset=utf-8');\n        header('X-Cache: HIT');\n        readfile($cacheFile);\n        return;\n    }\n    \n    \/\/ \u30c7\u30fc\u30bf\u3092\u751f\u6210\n    $data = $dataGenerator();\n    $json = json_encode($data, JSON_UNESCAPED_UNICODE);\n    \n    \/\/ \u30ad\u30e3\u30c3\u30b7\u30e5\u306b\u4fdd\u5b58\n    file_put_contents($cacheFile, $json, LOCK_EX);\n    \n    \/\/ \u30ec\u30b9\u30dd\u30f3\u30b9\u51fa\u529b\n    header('Content-Type: application\/json; charset=utf-8');\n    header('X-Cache: MISS');\n    echo $json;\n}\n\n\/\/ \u4f7f\u7528\u4f8b\uff1a\u5546\u54c1\u4e00\u89a7\u306e\u51fa\u529b\noutputCachedJson('products_list', function() {\n    $pdo = new PDO('mysql:host=localhost;dbname=testdb', 'user', 'password');\n    $stmt = $pdo-&gt;query('SELECT * FROM products WHERE active = 1');\n    return $stmt-&gt;fetchAll(PDO::FETCH_ASSOC);\n}, 1800); \/\/ 30\u5206\u30ad\u30e3\u30c3\u30b7\u30e5\n<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-95\">10. \u30b3\u30fc\u30c9\u518d\u5229\u7528\u306e\u305f\u3081\u306e\u30e6\u30fc\u30c6\u30a3\u30ea\u30c6\u30a3\u30af\u30e9\u30b9\u3092\u4f5c\u6210\u3059\u308b<\/h4>\n\n\n\n<p>\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5168\u4f53\u3067\u4e00\u8cab\u3057\u305fJSON\u51e6\u7406\u3092\u884c\u3046\u305f\u3081\u306b\u3001\u5c02\u7528\u306e\u30e6\u30fc\u30c6\u30a3\u30ea\u30c6\u30a3\u30af\u30e9\u30b9\u3092\u4f5c\u6210\u3059\u308b\u3053\u3068\u3092\u304a\u52e7\u3081\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/**\n * JSON\u51e6\u7406\u30e6\u30fc\u30c6\u30a3\u30ea\u30c6\u30a3\u30af\u30e9\u30b9\n *\/\nclass JsonUtils {\n    \/\/ \u30c7\u30d5\u30a9\u30eb\u30c8\u30d5\u30e9\u30b0\n    private static $defaultFlags = JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES;\n    \n    \/**\n     * PHP\u30c7\u30fc\u30bf\u3092JSON\u30a8\u30f3\u30b3\u30fc\u30c9\u3059\u308b\n     *\n     * @param mixed $data \u30a8\u30f3\u30b3\u30fc\u30c9\u3059\u308b\u30c7\u30fc\u30bf\n     * @param int $options \u8ffd\u52a0\u30aa\u30d7\u30b7\u30e7\u30f3\n     * @return string JSON\u30a8\u30f3\u30b3\u30fc\u30c9\u3055\u308c\u305f\u6587\u5b57\u5217\n     * @throws JsonException \u30a8\u30f3\u30b3\u30fc\u30c9\u5931\u6557\u6642\n     *\/\n    public static function encode($data, $options = 0) {\n        $flags = self::$defaultFlags | $options;\n        \n        $json = json_encode($data, $flags);\n        \n        if ($json === false) {\n            throw new Exception(\"JSON encoding failed: \" . json_last_error_msg());\n        }\n        \n        return $json;\n    }\n    \n    \/**\n     * JSON\u6587\u5b57\u5217\u3092PHP\u30c7\u30fc\u30bf\u306b\u30c7\u30b3\u30fc\u30c9\u3059\u308b\n     *\n     * @param string $json JSON\u30c7\u30fc\u30bf\n     * @param bool $assoc \u9023\u60f3\u914d\u5217\u3068\u3057\u3066\u53d6\u5f97\u3059\u308b\u304b\n     * @return mixed \u30c7\u30b3\u30fc\u30c9\u3055\u308c\u305f\u30c7\u30fc\u30bf\n     * @throws Exception \u30c7\u30b3\u30fc\u30c9\u5931\u6557\u6642\n     *\/\n    public static function decode($json, $assoc = true) {\n        $data = json_decode($json, $assoc);\n        \n        if ($data === null &amp;&amp; json_last_error() !== JSON_ERROR_NONE) {\n            throw new Exception(\"JSON decoding failed: \" . json_last_error_msg());\n        }\n        \n        return $data;\n    }\n    \n    \/**\n     * JSON\u30ec\u30b9\u30dd\u30f3\u30b9\u3092\u51fa\u529b\u3059\u308b\n     *\n     * @param mixed $data \u51fa\u529b\u30c7\u30fc\u30bf\n     * @param int $statusCode HTTP\u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9\n     * @param array $headers \u8ffd\u52a0\u30d8\u30c3\u30c0\u30fc\n     *\/\n    public static function response($data, $statusCode = 200, $headers = []) {\n        \/\/ \u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9\u3092\u8a2d\u5b9a\n        http_response_code($statusCode);\n        \n        \/\/ \u30d8\u30c3\u30c0\u30fc\u3092\u8a2d\u5b9a\n        header('Content-Type: application\/json; charset=utf-8');\n        foreach ($headers as $name =&gt; $value) {\n            header(\"$name: $value\");\n        }\n        \n        echo self::encode($data);\n        exit;\n    }\n    \n    \/**\n     * JSON\u30d5\u30a1\u30a4\u30eb\u306b\u4fdd\u5b58\u3059\u308b\n     *\n     * @param string $filePath \u30d5\u30a1\u30a4\u30eb\u30d1\u30b9\n     * @param mixed $data \u4fdd\u5b58\u3059\u308b\u30c7\u30fc\u30bf\n     * @param int $options \u30aa\u30d7\u30b7\u30e7\u30f3\n     * @return bool \u6210\u529f\u3057\u305f\u304b\u3069\u3046\u304b\n     *\/\n    public static function saveToFile($filePath, $data, $options = 0) {\n        $json = self::encode($data, $options);\n        return file_put_contents($filePath, $json, LOCK_EX) !== false;\n    }\n    \n    \/**\n     * JSON\u30d5\u30a1\u30a4\u30eb\u304b\u3089\u8aad\u307f\u8fbc\u3080\n     *\n     * @param string $filePath \u30d5\u30a1\u30a4\u30eb\u30d1\u30b9\n     * @param bool $assoc \u9023\u60f3\u914d\u5217\u3068\u3057\u3066\u53d6\u5f97\u3059\u308b\u304b\n     * @return mixed \u8aad\u307f\u8fbc\u3093\u3060\u30c7\u30fc\u30bf\n     *\/\n    public static function loadFromFile($filePath, $assoc = true) {\n        if (!file_exists($filePath)) {\n            return null;\n        }\n        \n        $json = file_get_contents($filePath);\n        return self::decode($json, $assoc);\n    }\n}\n\n\/\/ \u4f7f\u7528\u4f8b\ntry {\n    \/\/ JSON\u30c7\u30fc\u30bf\u3092\u751f\u6210\n    $json = JsonUtils::encode(['name' =&gt; '\u7530\u4e2d', 'age' =&gt; 30]);\n    \n    \/\/ JSON\u30ec\u30b9\u30dd\u30f3\u30b9\u3092\u51fa\u529b\n    JsonUtils::response(['status' =&gt; 'success', 'data' =&gt; ['id' =&gt; 123]]);\n    \n    \/\/ JSON\u30d5\u30a1\u30a4\u30eb\u306b\u4fdd\u5b58\n    JsonUtils::saveToFile('config.json', $config, JSON_PRETTY_PRINT);\n    \n    \/\/ JSON\u30d5\u30a1\u30a4\u30eb\u304b\u3089\u8aad\u307f\u8fbc\u307f\n    $settings = JsonUtils::loadFromFile('settings.json');\n} catch (Exception $e) {\n    error_log($e-&gt;getMessage());\n    \/\/ \u30a8\u30e9\u30fc\u51e6\u7406\n}\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-96\">\u6700\u5f8c\u306b<\/h3>\n\n\n\n<p><code>json_encode()<\/code>\u306f\u4e00\u898b\u30b7\u30f3\u30d7\u30eb\u306a\u95a2\u6570\u3067\u3059\u304c\u3001\u305d\u306e\u9069\u5207\u306a\u4f7f\u7528\u6cd5\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u3067\u3001PHP\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u958b\u767a\u306e\u5e45\u304c\u5927\u304d\u304f\u5e83\u304c\u308a\u307e\u3059\u3002\u7279\u306b\u73fe\u4ee3\u306eWeb\u958b\u767a\u306b\u304a\u3044\u3066\u306f\u3001\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\u3084\u30e2\u30d0\u30a4\u30eb\u30a2\u30d7\u30ea\u3068\u306e\u30c7\u30fc\u30bf\u9023\u643a\u3001API\u306e\u69cb\u7bc9\u3001\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u306e\u7ba1\u7406\u306a\u3069\u3001JSON\u5f62\u5f0f\u306e\u30c7\u30fc\u30bf\u51e6\u7406\u306f\u6b20\u304b\u305b\u306a\u3044\u8981\u7d20\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u8a18\u4e8b\u3067\u89e3\u8aac\u3057\u305f\u57fa\u672c\u6982\u5ff5\u3001\u5fdc\u7528\u30c6\u30af\u30cb\u30c3\u30af\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\u3001\u305d\u3057\u3066\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3092\u6d3b\u7528\u3057\u3066\u3001\u3088\u308a\u5805\u7262\u3067\u52b9\u7387\u7684\u306a\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u958b\u767a\u3092\u5b9f\u73fe\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p><code>json_encode()<\/code>\u3092\u4f7f\u3044\u3053\u306a\u3059\u3053\u3068\u306f\u3001\u73fe\u4ee3\u306ePHP\u30d7\u30ed\u30b0\u30e9\u30de\u30fc\u306b\u3068\u3063\u3066\u5fc5\u9808\u306e\u30b9\u30ad\u30eb\u3067\u3059\u3002\u305c\u3072\u65e5\u3005\u306e\u958b\u767a\u73fe\u5834\u3067\u5b9f\u8df5\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Warning: Undefined array key &#8220;is_admin&#8221; in \/home\/xs392991\/dexall.co.jp\/public_html\/articles\/wp-content\/themes\/ &#8230; <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12],"tags":[],"class_list":{"0":"post-3417","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-php","7":"nothumb"},"_links":{"self":[{"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/3417","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3417"}],"version-history":[{"count":1,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/3417\/revisions"}],"predecessor-version":[{"id":3418,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/3417\/revisions\/3418"}],"wp:attachment":[{"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3417"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3417"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3417"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}