{"id":3414,"date":"2025-03-24T08:46:16","date_gmt":"2025-03-23T23:46:16","guid":{"rendered":"https:\/\/dexall.co.jp\/articles\/?p=3414"},"modified":"2025-03-24T08:46:45","modified_gmt":"2025-03-23T23:46:45","slug":"php-json_decode%e5%ae%8c%e5%85%a8%e3%82%ac%e3%82%a4%e3%83%89%ef%bc%9a%e6%ad%a3%e3%81%97%e3%81%84%e4%bd%bf%e3%81%84%e6%96%b9%e3%81%8b%e3%82%89%e5%bf%9c%e7%94%a8%e3%83%86%e3%82%af%e3%83%8b%e3%83%83","status":"publish","type":"post","link":"https:\/\/dexall.co.jp\/articles\/?p=3414","title":{"rendered":"PHP json_decode\u5b8c\u5168\u30ac\u30a4\u30c9\uff1a\u6b63\u3057\u3044\u4f7f\u3044\u65b9\u304b\u3089\u5fdc\u7528\u30c6\u30af\u30cb\u30c3\u30af\u307e\u30677\u3064\u306e\u30dd\u30a4\u30f3\u30c8"},"content":{"rendered":"\n<p>\u73fe\u4ee3\u306eWeb\u958b\u767a\u306b\u304a\u3044\u3066\u3001JSON\u30c7\u30fc\u30bf\u306e\u51e6\u7406\u306f\u307b\u307c\u907f\u3051\u3066\u306f\u901a\u308c\u306a\u3044\u91cd\u8981\u306a\u30b9\u30ad\u30eb\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002REST API\u3068\u306e\u9023\u643a\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u8a2d\u5b9a\u306e\u7ba1\u7406\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u30b5\u30a4\u30c9\u3068\u306e\u30c7\u30fc\u30bf\u3084\u308a\u53d6\u308a\u306a\u3069\u3001JSON\u306f\u3055\u307e\u3056\u307e\u306a\u5834\u9762\u3067\u6d3b\u8e8d\u3057\u3066\u3044\u307e\u3059\u3002PHP\u3067JSON\u30c7\u30fc\u30bf\u3092\u6271\u3046\u969b\u306b\u6700\u3082\u57fa\u672c\u3068\u306a\u308b\u306e\u304c<code>json_decode<\/code>\u95a2\u6570\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u95a2\u6570\u306f\u4e00\u898b\u30b7\u30f3\u30d7\u30eb\u3067\u3059\u304c\u3001\u9069\u5207\u306b\u4f7f\u3044\u3053\u306a\u3059\u3053\u3068\u3067\u958b\u767a\u52b9\u7387\u3068\u54c1\u8cea\u3092\u5927\u304d\u304f\u5411\u4e0a\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u4e00\u65b9\u3067\u3001\u30d1\u30e9\u30e1\u30fc\u30bf\u306e\u4f7f\u3044\u65b9\u3084\u5927\u91cf\u30c7\u30fc\u30bf\u51e6\u7406\u6642\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\u3001\u30a8\u30e9\u30fc\u51e6\u7406\u306a\u3069\u3001\u77e5\u3063\u3066\u304a\u304f\u3079\u304d\u91cd\u8981\u306a\u30dd\u30a4\u30f3\u30c8\u3082\u5c11\u306a\u304f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p>\u672c\u8a18\u4e8b\u3067\u306f\u3001<code>json_decode<\/code>\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\u304b\u3089\u3001\u5b9f\u8df5\u7684\u306a\u5fdc\u7528\u30c6\u30af\u30cb\u30c3\u30af\u3001\u305d\u3057\u3066\u77e5\u3063\u3066\u304a\u304f\u3079\u304d\u6ce8\u610f\u70b9\u307e\u3067\u30017\u3064\u306e\u91cd\u8981\u306a\u30dd\u30a4\u30f3\u30c8\u306b\u5206\u3051\u3066\u5fb9\u5e95\u7684\u306b\u89e3\u8aac\u3057\u307e\u3059\u3002\u3053\u306e\u8a18\u4e8b\u3092\u8aad\u3080\u3053\u3068\u3067\u4ee5\u4e0b\u306e\u30e1\u30ea\u30c3\u30c8\u304c\u5f97\u3089\u308c\u307e\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>JSON\u30c7\u30fc\u30bf\u3092\u9069\u5207\u306bPHP\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\/\u914d\u5217\u306b\u5909\u63db\u3059\u308b\u30b9\u30ad\u30eb<\/li>\n\n\n\n<li>\u8907\u96d1\u306aJSON\u69cb\u9020\u3092\u52b9\u7387\u7684\u306b\u51e6\u7406\u3059\u308b\u65b9\u6cd5<\/li>\n\n\n\n<li>\u30a8\u30e9\u30fc\u767a\u751f\u6642\u306e\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u624b\u6cd5<\/li>\n\n\n\n<li>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u6700\u9069\u5316\u3059\u308b\u30c6\u30af\u30cb\u30c3\u30af<\/li>\n\n\n\n<li>\u5b9f\u969b\u306e\u958b\u767a\u73fe\u5834\u3067\u3059\u3050\u306b\u6d3b\u7528\u3067\u304d\u308b\u5b9f\u8df5\u7684\u306a\u30b3\u30fc\u30c9\u4f8b<\/li>\n<\/ul>\n\n\n\n<p>\u305d\u308c\u3067\u306f\u3001PHP\u306e<code>json_decode<\/code>\u95a2\u6570\u3092\u30de\u30b9\u30bf\u30fc\u3059\u308b\u305f\u3081\u306e\u65c5\u3092\u59cb\u3081\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\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\">1. PHP json_decode\u3068\u306f\uff1a\u57fa\u672c\u7684\u306a\u6a5f\u80fd\u3068\u5f79\u5272<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-1\">json_decode\u306e\u57fa\u672c\u7684\u306a\u5f79\u5272\uff1aJSON\u304b\u3089PHP\u3078\u306e\u5909\u63db<\/a>      <\/li>      <li>        <a href=\"#i-2\">JSON\u5f62\u5f0f\u306e\u30c7\u30fc\u30bf\u304c\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3067\u3069\u306e\u3088\u3046\u306b\u4f7f\u308f\u308c\u3066\u3044\u308b\u304b<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-3\">PHP\u306b\u304a\u3051\u308bJSON\u30c7\u30fc\u30bf\u51e6\u7406\u306e\u91cd\u8981\u6027<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-4\">2. json_decode\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\u3068\u30b7\u30f3\u30bf\u30c3\u30af\u30b9<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-5\">\u57fa\u672c\u7684\u306a\u69cb\u6587\u3068\u5fc5\u9808\u30d1\u30e9\u30e1\u30fc\u30bf\u306e\u8aac\u660e<\/a>      <\/li>      <li>        <a href=\"#i-6\">\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3068\u3057\u3066\u53d6\u5f97\u3059\u308b\u5834\u5408\u3068\u914d\u5217\u3068\u3057\u3066\u53d6\u5f97\u3059\u308b\u5834\u5408\u306e\u9055\u3044<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-7\">\u30b7\u30f3\u30d7\u30eb\u306a\u5b9f\u88c5\u4f8b\u3067\u7406\u89e3\u3059\u308b\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-8\">3. json_decode\u306e\u91cd\u8981\u306a\u30aa\u30d7\u30b7\u30e7\u30f3\u30d1\u30e9\u30e1\u30fc\u30bf<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-9\">\u7b2c2\u5f15\u6570\uff08assoc\uff09\uff1a\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3068\u914d\u5217\u306e\u9078\u629e<\/a>      <\/li>      <li>        <a href=\"#i-10\">\u7b2c3\u5f15\u6570\uff08depth\uff09\uff1a\u30cd\u30b9\u30c8\u306e\u6df1\u3055\u5236\u9650\u306e\u8a2d\u5b9a\u65b9\u6cd5\u3068\u6ce8\u610f\u70b9<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-11\">\u7b2c4\u5f15\u6570\uff08flags\uff09\uff1aJSON\u306e\u30c7\u30b3\u30fc\u30c9\u65b9\u6cd5\u3092\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3059\u308b<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-12\">4. json_decode\u3067\u767a\u751f\u3059\u308b\u4e3b\u306a\u30a8\u30e9\u30fc\u3068\u5bfe\u51e6\u6cd5<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-13\">NULL\u8fd4\u5374\u306e\u539f\u56e0\uff1aJSON\u306e\u69cb\u6587\u30a8\u30e9\u30fc\u3092\u7279\u5b9a\u3059\u308b\u65b9\u6cd5<\/a>      <\/li>      <li>        <a href=\"#i-14\">json_last_error\u95a2\u6570\u3067\u30a8\u30e9\u30fc\u60c5\u5831\u3092\u53d6\u5f97\u3059\u308b<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-15\">\u4e00\u822c\u7684\u306aJSON\u69cb\u6587\u30a8\u30e9\u30fc\u3068\u305d\u306e\u4fee\u6b63\u65b9\u6cd5<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-16\">5. json_decode\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3068\u6700\u9069\u5316\u30c6\u30af\u30cb\u30c3\u30af<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-17\">\u5927\u91cf\u306eJSON\u30c7\u30fc\u30bf\u3092\u51e6\u7406\u3059\u308b\u969b\u306e\u52b9\u7387\u5316\u624b\u6cd5<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-18\">\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u3092\u6291\u3048\u308b\u305f\u3081\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-19\">6. \u5b9f\u8df5\u7684\u306a\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\uff1ajson_decode\u306e\u5fdc\u7528\u4f8b<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-20\">API\u30ec\u30b9\u30dd\u30f3\u30b9\u306e\u51e6\u7406\uff1a\u5916\u90e8API\u3068\u306e\u9023\u643a\u65b9\u6cd5<\/a>      <\/li>      <li>        <a href=\"#i-21\">\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u3068\u3057\u3066\u306eJSON\u306e\u6d3b\u7528\u65b9\u6cd5<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-22\">\u8907\u96d1\u306a\u30cd\u30b9\u30c8\u3055\u308c\u305fJSON\u30c7\u30fc\u30bf\u306e\u52b9\u7387\u7684\u306a\u51e6\u7406\u6cd5<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-23\">7. json_encode\u3068\u306e\u9023\u643a\uff1aJSON\u30c7\u30fc\u30bf\u306e\u53cc\u65b9\u5411\u51e6\u7406<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-24\">PHP\u914d\u5217\/\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304b\u3089JSON\u3078\u3001\u305d\u3057\u3066JSON\u304b\u3089PHP\u914d\u5217\/\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3078\u306e\u5909\u63db\u30d5\u30ed\u30fc<\/a>      <\/li>      <li>        <a href=\"#i-25\">\u30c7\u30fc\u30bf\u306e\u6c38\u7d9a\u5316\u3068\u30ad\u30e3\u30c3\u30b7\u30e5\u306b\u304a\u3051\u308bJSON\u6d3b\u7528\u8853<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-26\">\u30a8\u30f3\u30b3\u30fc\u30c9\u3068\u30c7\u30b3\u30fc\u30c9\u3092\u7d44\u307f\u5408\u308f\u305b\u305f\u5b9f\u8df5\u7684\u306a\u30b3\u30fc\u30c9\u4f8b<\/a>      <\/li>    <\/ul>  <\/li>  <li class=\"last\">    <a href=\"#i-27\">\u307e\u3068\u3081\uff1aPHP json_decode\u3092\u4f7f\u3044\u3053\u306a\u3059\u305f\u3081\u306e\u30dd\u30a4\u30f3\u30c8<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-28\">\u672c\u8a18\u4e8b\u3067\u89e3\u8aac\u3057\u305f7\u3064\u306e\u91cd\u8981\u30dd\u30a4\u30f3\u30c8\u306e\u5fa9\u7fd2<\/a>      <\/li>      <li>        <a href=\"#i-29\">\u3088\u308a\u9ad8\u5ea6\u306aJSON\u30c7\u30fc\u30bf\u51e6\u7406\u3078\u306e\u767a\u5c55\u7684\u306a\u5b66\u7fd2\u30ea\u30bd\u30fc\u30b9<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-30\">\u5b9f\u52d9\u3067\u5373\u6d3b\u7528\u3067\u304d\u308bjson_decode\u306e\u5b9f\u8df5\u30c6\u30af\u30cb\u30c3\u30af<\/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\">1. PHP json_decode\u3068\u306f\uff1a\u57fa\u672c\u7684\u306a\u6a5f\u80fd\u3068\u5f79\u5272<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-1\">json_decode\u306e\u57fa\u672c\u7684\u306a\u5f79\u5272\uff1aJSON\u304b\u3089PHP\u3078\u306e\u5909\u63db<\/h3>\n\n\n\n<p><code>json_decode<\/code>\u95a2\u6570\u306f\u3001JSON\uff08JavaScript Object Notation\uff09\u5f62\u5f0f\u306e\u6587\u5b57\u5217\u3092PHP\u306e\u30cd\u30a4\u30c6\u30a3\u30d6\u30c7\u30fc\u30bf\u578b\u306b\u5909\u63db\u3059\u308b\u305f\u3081\u306e\u57fa\u672c\u95a2\u6570\u3067\u3059\u3002\u3053\u306e\u95a2\u6570\u3092\u4f7f\u3046\u3053\u3068\u3067\u3001JSON\u6587\u5b57\u5217\u3092PHP\u3067\u6271\u3044\u3084\u3059\u3044\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3084\u9023\u60f3\u914d\u5217\u306b\u5909\u63db\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u4f8b\u3048\u3070\u3001\u5916\u90e8API\u304b\u3089\u53d7\u3051\u53d6\u3063\u305fJSON\u6587\u5b57\u5217\u3084\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5074\u306eJavaScript\u304b\u3089\u9001\u4fe1\u3055\u308c\u305fJSON\u30c7\u30fc\u30bf\u3092\u3001PHP\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5185\u3067\u64cd\u4f5c\u53ef\u80fd\u306a\u5f62\u5f0f\u306b\u5909\u63db\u3059\u308b\u969b\u306b\u4e0d\u53ef\u6b20\u3067\u3059\u3002<code>json_decode<\/code>\u95a2\u6570\u304c\u306a\u3051\u308c\u3070\u3001\u8907\u96d1\u306a\u6587\u5b57\u5217\u64cd\u4f5c\u3092\u81ea\u524d\u3067\u5b9f\u88c5\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u3001\u958b\u767a\u52b9\u7387\u304c\u5927\u5e45\u306b\u4f4e\u4e0b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-2\">JSON\u5f62\u5f0f\u306e\u30c7\u30fc\u30bf\u304c\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3067\u3069\u306e\u3088\u3046\u306b\u4f7f\u308f\u308c\u3066\u3044\u308b\u304b<\/h3>\n\n\n\n<p>JSON\u306f\u73fe\u4ee3\u306e\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u30a8\u30b3\u30b7\u30b9\u30c6\u30e0\u306b\u304a\u3044\u3066\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u591a\u69d8\u306a\u5834\u9762\u3067\u5229\u7528\u3055\u308c\u3066\u3044\u307e\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>API\u901a\u4fe1\u306e\u30c7\u30fc\u30bf\u5f62\u5f0f<\/strong>: RESTful API\u3084GraphQL API\u306e\u6a19\u6e96\u30ec\u30b9\u30dd\u30f3\u30b9\u5f62\u5f0f\u3068\u3057\u3066<\/li>\n\n\n\n<li><strong>\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb<\/strong>: composer.json\uff08PHP\uff09\u3001package.json\uff08Node.js\uff09\u306a\u3069<\/li>\n\n\n\n<li><strong>\u30c7\u30fc\u30bf\u30b9\u30c8\u30ec\u30fc\u30b8<\/strong>: MongoDB\u306a\u3069\u306eNoSQL\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u4fdd\u5b58\u5f62\u5f0f<\/li>\n\n\n\n<li><strong>\u30d6\u30e9\u30a6\u30b6\u3068\u30b5\u30fc\u30d0\u30fc\u9593\u306e\u901a\u4fe1<\/strong>: Ajax\u901a\u4fe1\u3084\u30d5\u30a7\u30c3\u30c1API\u3067\u306e\u30c7\u30fc\u30bf\u4ea4\u63db<\/li>\n\n\n\n<li><strong>\u30de\u30a4\u30af\u30ed\u30b5\u30fc\u30d3\u30b9\u9593\u306e\u901a\u4fe1<\/strong>: \u30b5\u30fc\u30d3\u30b9\u9593\u3067\u306e\u30c7\u30fc\u30bf\u4ea4\u63db\u5f62\u5f0f<\/li>\n<\/ul>\n\n\n\n<p>JSON\u304c\u3053\u308c\u307b\u3069\u5e83\u304f\u63a1\u7528\u3055\u308c\u3066\u3044\u308b\u7406\u7531\u306f\u3001\u305d\u306e\u8efd\u91cf\u3055\u3001\u53ef\u8aad\u6027\u306e\u9ad8\u3055\u3001\u8a00\u8a9e\u975e\u4f9d\u5b58\u6027\u3001\u305d\u3057\u3066\u62e1\u5f35\u6027\u306e\u9ad8\u3055\u306b\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-3\">PHP\u306b\u304a\u3051\u308bJSON\u30c7\u30fc\u30bf\u51e6\u7406\u306e\u91cd\u8981\u6027<\/h3>\n\n\n\n<p>PHP\u306fWeb\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u958b\u767a\u306b\u304a\u3044\u3066\u91cd\u8981\u306a\u4f4d\u7f6e\u3092\u5360\u3081\u308b\u30b5\u30fc\u30d0\u30fc\u30b5\u30a4\u30c9\u8a00\u8a9e\u3067\u3042\u308a\u3001\u4ee5\u4e0b\u306e\u7406\u7531\u304b\u3089JSON\u30c7\u30fc\u30bf\u51e6\u7406\u306f\u7279\u306b\u91cd\u8981\u3067\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\u9023\u643a<\/strong>: JavaScript\u30d9\u30fc\u30b9\u306e\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\u3068PHP\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u306e\u9593\u3067\u306e\u30c7\u30fc\u30bf\u4ea4\u63db<\/li>\n\n\n\n<li><strong>\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3API\u7d71\u5408<\/strong>: \u5916\u90e8\u30b5\u30fc\u30d3\u30b9\u306e\u591a\u304f\u304cJSON\u30d9\u30fc\u30b9\u306eAPI\u3092\u63d0\u4f9b<\/li>\n\n\n\n<li><strong>\u30e2\u30c0\u30f3\u306aPHP\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af<\/strong>: Laravel\u3001Symfony\u3001Yii\u3001CodeIgniter\u306a\u3069\u304cJSON\u30ec\u30b9\u30dd\u30f3\u30b9\u3092\u6a19\u6e96\u30b5\u30dd\u30fc\u30c8<\/li>\n\n\n\n<li><strong>\u30b7\u30f3\u30b0\u30eb\u30da\u30fc\u30b8\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\uff08SPA\uff09\u306e\u30d0\u30c3\u30af\u30a8\u30f3\u30c9<\/strong>: SPA\u3068\u306e\u901a\u4fe1\u306f\u307b\u307c\u3059\u3079\u3066JSON\u5f62\u5f0f<\/li>\n<\/ol>\n\n\n\n<p>\u7279\u306b\u8fd1\u5e74\u306eWeb\u958b\u767a\u3067\u306f\u3001\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\u3068\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u3092\u5206\u96e2\u3059\u308b\u958b\u767a\u30a2\u30d7\u30ed\u30fc\u30c1\u304c\u4e3b\u6d41\u3068\u306a\u308a\u3001PHP\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u304cAPI\u30b5\u30fc\u30d0\u30fc\u3068\u3057\u3066\u6a5f\u80fd\u3059\u308b\u3053\u3068\u304c\u5897\u3048\u3066\u3044\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001<code>json_decode<\/code>\u3068<code>json_encode<\/code>\u306e\u9069\u5207\u306a\u4f7f\u7528\u6cd5\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u306f\u3001PHP\u30a8\u30f3\u30b8\u30cb\u30a2\u306b\u3068\u3063\u3066\u5fc5\u9808\u306e\u30b9\u30ad\u30eb\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-4\">2. json_decode\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\u3068\u30b7\u30f3\u30bf\u30c3\u30af\u30b9<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-5\">\u57fa\u672c\u7684\u306a\u69cb\u6587\u3068\u5fc5\u9808\u30d1\u30e9\u30e1\u30fc\u30bf\u306e\u8aac\u660e<\/h3>\n\n\n\n<p>PHP\u306e<code>json_decode<\/code>\u95a2\u6570\u306e\u57fa\u672c\u7684\u306a\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=\"\">mixed json_decode(string $json, bool $associative = false, int $depth = 512, int $flags = 0)\n<\/pre>\n\n\n\n<p>\u5404\u30d1\u30e9\u30e1\u30fc\u30bf\u306e\u610f\u5473\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>$json<\/code>\uff08\u5fc5\u9808\uff09: \u30c7\u30b3\u30fc\u30c9\u3059\u308bJSON\u5f62\u5f0f\u306e\u6587\u5b57\u5217<\/li>\n\n\n\n<li><code>$associative<\/code>\uff08\u7701\u7565\u53ef\uff09: \u7d50\u679c\u3092\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\uff08false\u3001\u30c7\u30d5\u30a9\u30eb\u30c8\uff09\u307e\u305f\u306f\u9023\u60f3\u914d\u5217\uff08true\uff09\u3068\u3057\u3066\u8fd4\u3059\u304b\u3092\u6307\u5b9a<\/li>\n\n\n\n<li><code>$depth<\/code>\uff08\u7701\u7565\u53ef\uff09: JSON\u306e\u89e3\u6790\u306e\u6700\u5927\u6df1\u3055\uff08\u30c7\u30d5\u30a9\u30eb\u30c8\u306f512\uff09<\/li>\n\n\n\n<li><code>$flags<\/code>\uff08\u7701\u7565\u53ef\uff09: JSON\u89e3\u6790\u6642\u306e\u30aa\u30d7\u30b7\u30e7\u30f3\u30d5\u30e9\u30b0\uff08PHP 7.3\u4ee5\u964d\u3067\u8ffd\u52a0\u3055\u308c\u305f\u6a5f\u80fd\uff09<\/li>\n<\/ul>\n\n\n\n<p>\u6700\u3082\u57fa\u672c\u7684\u306a\u4f7f\u7528\u6cd5\u3067\u306f\u3001JSON\u6587\u5b57\u5217\u306e\u307f\u3092\u6e21\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u57fa\u672c\u7684\u306a\u4f7f\u7528\u4f8b\n$json_string = '{\"name\":\"\u7530\u4e2d\u592a\u90ce\",\"age\":30,\"city\":\"\u6771\u4eac\"}';\n$data = json_decode($json_string);\n\n\/\/ \u7d50\u679c\u3092\u4f7f\u7528\necho $data-&gt;name; \/\/ \u51fa\u529b: \u7530\u4e2d\u592a\u90ce\n<\/pre>\n\n\n\n<p>JSON\u30c7\u30b3\u30fc\u30c9\u306b\u5931\u6557\u3057\u305f\u5834\u5408\uff08\u4f8b\uff1aJSON\u69cb\u6587\u304c\u7121\u52b9\u306a\u5834\u5408\uff09\u3001<code>json_decode<\/code>\u306f<code>null<\/code>\u3092\u8fd4\u3057\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u623b\u308a\u5024\u304c<code>null<\/code>\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u3067\u3001\u30c7\u30b3\u30fc\u30c9\u306e\u6210\u529f\u30fb\u5931\u6557\u3092\u5224\u65ad\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-6\">\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3068\u3057\u3066\u53d6\u5f97\u3059\u308b\u5834\u5408\u3068\u914d\u5217\u3068\u3057\u3066\u53d6\u5f97\u3059\u308b\u5834\u5408\u306e\u9055\u3044<\/h3>\n\n\n\n<p><code>json_decode<\/code>\u306e\u7b2c2\u5f15\u6570<code>$associative<\/code>\u306e\u5024\u306b\u3088\u3063\u3066\u3001JSON\u6587\u5b57\u5217\u304cPHP\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u307e\u305f\u306f\u9023\u60f3\u914d\u5217\u306b\u5909\u63db\u3055\u308c\u307e\u3059\u3002\u305d\u308c\u305e\u308c\u306e\u7279\u5fb4\u3068\u9055\u3044\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\uff1a<\/p>\n\n\n\n<p><strong>\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3068\u3057\u3066\u53d6\u5f97\uff08<code>$associative = false<\/code>\uff09<\/strong>\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">$json = '{\"name\":\"\u5c71\u7530\u82b1\u5b50\",\"skills\":[\"PHP\",\"JavaScript\",\"MySQL\"]}';\n$obj = json_decode($json); \/\/ \u30c7\u30d5\u30a9\u30eb\u30c8\u306ffalse\n\n\/\/ \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u5f62\u5f0f\u3067\u30a2\u30af\u30bb\u30b9\necho $obj-&gt;name; \/\/ \u51fa\u529b: \u5c71\u7530\u82b1\u5b50\necho $obj-&gt;skills[0]; \/\/ \u51fa\u529b: PHP\n<\/pre>\n\n\n\n<p><strong>\u9023\u60f3\u914d\u5217\u3068\u3057\u3066\u53d6\u5f97\uff08<code>$associative = true<\/code>\uff09<\/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=\"\">$json = '{\"name\":\"\u5c71\u7530\u82b1\u5b50\",\"skills\":[\"PHP\",\"JavaScript\",\"MySQL\"]}';\n$arr = json_decode($json, true);\n\n\/\/ \u914d\u5217\u5f62\u5f0f\u3067\u30a2\u30af\u30bb\u30b9\necho $arr['name']; \/\/ \u51fa\u529b: \u5c71\u7530\u82b1\u5b50\necho $arr['skills'][0]; \/\/ \u51fa\u529b: PHP\n<\/pre>\n\n\n\n<p>\u9078\u629e\u3059\u308b\u57fa\u6e96\u3068\u3057\u3066\u306f\u3001\u4ee5\u4e0b\u306e\u70b9\u304c\u8003\u616e\u3055\u308c\u307e\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u53ef\u8aad\u6027<\/strong>: \u30b3\u30fc\u30c9\u306e\u6587\u8108\u306b\u3088\u3063\u3066\u306f\u3001<code>-&gt;<\/code>\u307e\u305f\u306f<code>[]<\/code>\u306e\u3069\u3061\u3089\u304b\u304c\u8aad\u307f\u3084\u3059\u3044\u5834\u5408\u304c\u3042\u308b<\/li>\n\n\n\n<li><strong>\u65e2\u5b58\u30b3\u30fc\u30c9<\/strong>: \u65e2\u5b58\u306e\u30b3\u30fc\u30c9\u304c\u914d\u5217\u30d9\u30fc\u30b9\u306a\u3089\u914d\u5217\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u30d9\u30fc\u30b9\u306a\u3089\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u9078\u629e<\/li>\n\n\n\n<li><strong>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9<\/strong>: \u975e\u5e38\u306b\u5927\u304d\u306aJSON\u30c7\u30fc\u30bf\u3067\u306f\u3001\u9023\u60f3\u914d\u5217\u306e\u307b\u3046\u304c\u82e5\u5e72\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u826f\u3044\u5834\u5408\u304c\u3042\u308b<\/li>\n\n\n\n<li><strong>\u6a5f\u80fd\u6027<\/strong>: \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u306f\u72ec\u81ea\u30e1\u30bd\u30c3\u30c9\u3092\u8ffd\u52a0\u3067\u304d\u306a\u3044\u304c\u3001stdClass\u306f\u6a19\u6e96\u7684\u306a\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u64cd\u4f5c\u304c\u53ef\u80fd<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-7\">\u30b7\u30f3\u30d7\u30eb\u306a\u5b9f\u88c5\u4f8b\u3067\u7406\u89e3\u3059\u308b\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9<\/h3>\n\n\n\n<p>\u5177\u4f53\u7684\u306a\u4f8b\u3092\u901a\u3058\u3066\u3001<code>json_decode<\/code>\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\u3092\u898b\u3066\u307f\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=\"\">&lt;?php\n\/\/ 1. \u30b7\u30f3\u30d7\u30eb\u306aJSON\u30c7\u30fc\u30bf\u306e\u30c7\u30b3\u30fc\u30c9\n$simple_json = '{\"title\":\"PHP json_decode\u5b8c\u5168\u30ac\u30a4\u30c9\",\"author\":\"Dexall\",\"published\":true}';\n$book = json_decode($simple_json);\n\n\/\/ \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3068\u3057\u3066\u6271\u3046\necho \"\u66f8\u7c4d\u540d: \" . $book-&gt;title . \"\\n\";\necho \"\u8457\u8005: \" . $book-&gt;author . \"\\n\";\necho \"\u51fa\u7248\u72b6\u6cc1: \" . ($book-&gt;published ? \"\u51fa\u7248\u6e08\u307f\" : \"\u672a\u51fa\u7248\") . \"\\n\";\n\n\/\/ 2. \u30cd\u30b9\u30c8\u3055\u308c\u305fJSON\u30c7\u30fc\u30bf\u306e\u30c7\u30b3\u30fc\u30c9\n$nested_json = '{\n    \"user\": {\n        \"id\": 123,\n        \"name\": \"\u4f50\u85e4\u6b21\u90ce\",\n        \"contact\": {\n            \"email\": \"jiro@example.com\",\n            \"phone\": \"03-1234-5678\"\n        }\n    },\n    \"orders\": [\n        {\"id\": 1001, \"product\": \"PHP\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u5165\u9580\", \"price\": 2800},\n        {\"id\": 1002, \"product\": \"\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u8a2d\u8a08\u306e\u57fa\u672c\", \"price\": 3200}\n    ]\n}';\n\n$data = json_decode($nested_json);\n\n\/\/ \u30cd\u30b9\u30c8\u3055\u308c\u305f\u30d7\u30ed\u30d1\u30c6\u30a3\u3078\u306e\u30a2\u30af\u30bb\u30b9\necho \"\u30e6\u30fc\u30b6\u30fc\u540d: \" . $data-&gt;user-&gt;name . \"\\n\";\necho \"\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9: \" . $data-&gt;user-&gt;contact-&gt;email . \"\\n\";\necho \"\u6700\u521d\u306e\u6ce8\u6587\u5546\u54c1: \" . $data-&gt;orders[0]-&gt;product . \"\\n\";\n\n\/\/ 3. \u914d\u5217\u3068\u3057\u3066\u30c7\u30b3\u30fc\u30c9\u3059\u308b\u4f8b\n$array_data = json_decode($nested_json, true);\necho \"\u914d\u5217\u5f62\u5f0f\u3067\u306e\u30a2\u30af\u30bb\u30b9 - \u30e6\u30fc\u30b6\u30fc\u540d: \" . $array_data['user']['name'] . \"\\n\";\n\n\/\/ 4. \u914d\u5217\u3092\u4f7f\u3063\u305f\u30eb\u30fc\u30d7\u51e6\u7406\necho \"\u6ce8\u6587\u30ea\u30b9\u30c8:\\n\";\nforeach ($data-&gt;orders as $order) {\n    echo \"- \" . $order-&gt;product . \": \" . $order-&gt;price . \"\u5186\\n\";\n}\n?&gt;\n<\/pre>\n\n\n\n<p>\u3053\u306e\u30b3\u30fc\u30c9\u4f8b\u3067\u306f\u3001\u30b7\u30f3\u30d7\u30eb\u306aJSON\u30c7\u30fc\u30bf\u3068\u30cd\u30b9\u30c8\u3055\u308c\u305fJSON\u30c7\u30fc\u30bf\u306e\u4e21\u65b9\u3092\u30c7\u30b3\u30fc\u30c9\u3059\u308b\u65b9\u6cd5\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002\u307e\u305f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u5f62\u5f0f\u3067\u306e\u30a2\u30af\u30bb\u30b9\u3068\u914d\u5217\u5f62\u5f0f\u3067\u306e\u30a2\u30af\u30bb\u30b9\u306e\u9055\u3044\u3082\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u5b9f\u969b\u306e\u958b\u767a\u3067\u306f\u3001API\u30ec\u30b9\u30dd\u30f3\u30b9\u3084\u30d5\u30a1\u30a4\u30eb\u304b\u3089\u8aad\u307f\u8fbc\u3093\u3060JSON\u30c7\u30fc\u30bf\u3092\u30c7\u30b3\u30fc\u30c9\u3059\u308b\u5834\u9762\u304c\u591a\u3044\u3067\u3057\u3087\u3046\u3002\u6b21\u7ae0\u3067\u306f\u3001\u3055\u3089\u306b\u9ad8\u5ea6\u306a\u30aa\u30d7\u30b7\u30e7\u30f3\u30d1\u30e9\u30e1\u30fc\u30bf\u306e\u6d3b\u7528\u65b9\u6cd5\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u898b\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-8\">3. json_decode\u306e\u91cd\u8981\u306a\u30aa\u30d7\u30b7\u30e7\u30f3\u30d1\u30e9\u30e1\u30fc\u30bf<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-9\">\u7b2c2\u5f15\u6570\uff08assoc\uff09\uff1a\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3068\u914d\u5217\u306e\u9078\u629e<\/h3>\n\n\n\n<p><code>json_decode<\/code>\u306e\u7b2c2\u5f15\u6570<code>$associative<\/code>\u306f\u3001JSON\u30c7\u30fc\u30bf\u3092PHP\u3067\u3069\u306e\u3088\u3046\u306b\u8868\u73fe\u3059\u308b\u304b\u3092\u6c7a\u5b9a\u3059\u308b\u91cd\u8981\u306a\u30d1\u30e9\u30e1\u30fc\u30bf\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=\"\">\/\/ \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3068\u3057\u3066\u53d6\u5f97\uff08\u30c7\u30d5\u30a9\u30eb\u30c8\uff09\n$json = '{\"name\":\"\u9234\u6728\u4e00\u90ce\",\"email\":\"ichiro@example.com\"}';\n$user = json_decode($json); \/\/ \u7b2c2\u5f15\u6570\u7701\u7565 = false\necho $user-&gt;name; \/\/ \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u5f62\u5f0f\u3067\u30a2\u30af\u30bb\u30b9\n\n\/\/ \u9023\u60f3\u914d\u5217\u3068\u3057\u3066\u53d6\u5f97\n$user_array = json_decode($json, true);\necho $user_array['name']; \/\/ \u914d\u5217\u5f62\u5f0f\u3067\u30a2\u30af\u30bb\u30b9\n<\/pre>\n\n\n\n<p>\u4e21\u65b9\u306e\u30a2\u30d7\u30ed\u30fc\u30c1\u306b\u306f\u305d\u308c\u305e\u308c\u30e1\u30ea\u30c3\u30c8\u304c\u3042\u308a\u307e\u3059\uff1a<\/p>\n\n\n<div id=\"id-efd8fe6c-93da-4245-9f49-3d27e1735c2b\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u7279\u5fb4<\/th><th>\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u5f62\u5f0f\uff08false\uff09<\/th><th>\u914d\u5217\u5f62\u5f0f\uff08true\uff09<\/th><\/tr><\/thead><tbody><tr><td>\u30a2\u30af\u30bb\u30b9\u65b9\u6cd5<\/td><td>$obj-&gt;property<\/td><td>$arr[\u2018key\u2019]<\/td><\/tr><tr><td>\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf<\/td><td>\u3084\u3084\u591a\u3044<\/td><td>\u3084\u3084\u5c11\u306a\u3044<\/td><\/tr><tr><td>\u51e6\u7406\u901f\u5ea6<\/td><td>\u5927\u91cf\u30c7\u30fc\u30bf\u3067\u3084\u3084\u9045\u3044<\/td><td>\u5927\u91cf\u30c7\u30fc\u30bf\u3067\u9ad8\u901f<\/td><\/tr><tr><td>\u53ef\u8aad\u6027<\/td><td>OOP\u8a2d\u8a08\u3067\u306f\u81ea\u7136<\/td><td>\u914d\u5217\u64cd\u4f5c\u304c\u591a\u3044\u5834\u5408\u306b\u81ea\u7136<\/td><\/tr><tr><td>\u8ffd\u52a0\u64cd\u4f5c<\/td><td>\u30d7\u30ed\u30d1\u30c6\u30a3\u306e\u8ffd\u52a0\u304c\u7c21\u5358<\/td><td>\u914d\u5217\u64cd\u4f5c\u95a2\u6570\u304c\u4f7f\u3048\u308b<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<p>\u5b9f\u52d9\u3067\u306f\u3001\u51e6\u7406\u3059\u308bJSON\u30c7\u30fc\u30bf\u306e\u91cf\u3068\u65e2\u5b58\u30b3\u30fc\u30c9\u306e\u8a2d\u8a08\u30b9\u30bf\u30a4\u30eb\u306b\u57fa\u3065\u3044\u3066\u9078\u629e\u3059\u308b\u306e\u304c\u4e00\u822c\u7684\u3067\u3059\u3002\u7279\u306b\u5927\u91cf\u306e\u30c7\u30fc\u30bf\u3092\u51e6\u7406\u3059\u308b\u5834\u5408\u3084\u3001\u914d\u5217\u64cd\u4f5c\u95a2\u6570\uff08<code>array_map<\/code>\u3001<code>array_filter<\/code>\u306a\u3069\uff09\u3092\u6d3b\u7528\u3057\u305f\u3044\u5834\u5408\u306f\u3001\u914d\u5217\u5f62\u5f0f\u304c\u6709\u5229\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-10\">\u7b2c3\u5f15\u6570\uff08depth\uff09\uff1a\u30cd\u30b9\u30c8\u306e\u6df1\u3055\u5236\u9650\u306e\u8a2d\u5b9a\u65b9\u6cd5\u3068\u6ce8\u610f\u70b9<\/h3>\n\n\n\n<p><code>json_decode<\/code>\u306e\u7b2c3\u5f15\u6570<code>$depth<\/code>\u306f\u3001JSON\u306e\u30cd\u30b9\u30c8\uff08\u5165\u308c\u5b50\uff09\u306e\u6700\u5927\u6df1\u3055\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u306f512\u3067\u3059\u304c\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u8abf\u6574\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=\"\">\/\/ \u975e\u5e38\u306b\u6df1\u304f\u30cd\u30b9\u30c8\u3055\u308c\u305fJSON\u3092\u5236\u9650\u4ed8\u304d\u3067\u30c7\u30b3\u30fc\u30c9\n$deep_json = '{\"level1\":{\"level2\":{\"level3\":{\"level4\":{\"level5\":{\"data\":\"\u6df1\u3059\u304e\u308b\u30c7\u30fc\u30bf\"}}}}}}';\n\n\/\/ \u30c7\u30d5\u30a9\u30eb\u30c8\u6df1\u3055\uff08512\uff09\u3067\u30c7\u30b3\u30fc\u30c9\n$normal = json_decode($deep_json);\nvar_dump($normal-&gt;level1-&gt;level2-&gt;level3-&gt;level4-&gt;level5-&gt;data); \/\/ string(15) \"\u6df1\u3059\u304e\u308b\u30c7\u30fc\u30bf\"\n\n\/\/ \u6df1\u3055\u30923\u306b\u5236\u9650\u3057\u3066\u30c7\u30b3\u30fc\u30c9\n$limited = json_decode($deep_json, false, 3);\nvar_dump($limited-&gt;level1-&gt;level2-&gt;level3); \/\/ NULL (\u6df1\u3055\u5236\u9650\u3092\u8d85\u3048\u305f\u305f\u3081)\n<\/pre>\n\n\n\n<p>\u3053\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u304c\u91cd\u8981\u306a\u7406\u7531\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56<\/strong>: \u60aa\u610f\u306e\u3042\u308b\u6975\u7aef\u306b\u6df1\u3044JSON\u306b\u3088\u308b\u30ea\u30bd\u30fc\u30b9\u67af\u6e07\u653b\u6483\u3092\u9632\u3050<\/li>\n\n\n\n<li><strong>\u30e1\u30e2\u30ea\u7ba1\u7406<\/strong>: \u904e\u5270\u306a\u30e1\u30e2\u30ea\u4f7f\u7528\u3092\u9632\u6b62\u3059\u308b<\/li>\n\n\n\n<li><strong>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316<\/strong>: \u5fc5\u8981\u4ee5\u4e0a\u306b\u6df1\u3044\u69cb\u9020\u306e\u89e3\u6790\u3092\u9632\u3050<\/li>\n<\/ol>\n\n\n\n<p>\u5b9f\u969b\u306e\u958b\u767a\u3067\u306f\u3001\u6271\u3046JSON\u30c7\u30fc\u30bf\u306e\u69cb\u9020\u306b\u5fdc\u3058\u3066\u9069\u5207\u306a\u5024\u3092\u8a2d\u5b9a\u3057\u307e\u3057\u3087\u3046\u3002\u901a\u5e38\u306eAPI\u30ec\u30b9\u30dd\u30f3\u30b9\u3067\u3042\u308c\u307010\u301c20\u7a0b\u5ea6\u3001\u8907\u96d1\u306a\u30c7\u30fc\u30bf\u69cb\u9020\u3067\u308250\u301c100\u7a0b\u5ea6\u306e\u6df1\u3055\u5236\u9650\u3067\u5341\u5206\u3067\u3042\u308b\u3053\u3068\u304c\u591a\u3044\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-11\">\u7b2c4\u5f15\u6570\uff08flags\uff09\uff1aJSON\u306e\u30c7\u30b3\u30fc\u30c9\u65b9\u6cd5\u3092\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3059\u308b<\/h3>\n\n\n\n<p>PHP 7.3\u4ee5\u964d\u3067\u5c0e\u5165\u3055\u308c\u305f\u7b2c4\u5f15\u6570<code>$flags<\/code>\u306f\u3001JSON\u30c7\u30b3\u30fc\u30c9\u306e\u30d7\u30ed\u30bb\u30b9\u3092\u3088\u308a\u7d30\u304b\u304f\u5236\u5fa1\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002\u4ee5\u4e0b\u306b\u4e3b\u8981\u306a\u30d5\u30e9\u30b0\u3068\u305d\u306e\u7528\u9014\u3092\u7d39\u4ecb\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=\"\">\/\/ JSON_THROW_ON_ERROR: \u30a8\u30e9\u30fc\u6642\u306b\u4f8b\u5916\u3092\u30b9\u30ed\u30fc\ntry {\n    $invalid_json = '{\"name\": \"\u7530\u4e2d\", \"age\": 30,}'; \/\/ \u7121\u52b9\u306aJSON\uff08\u672b\u5c3e\u306b\u30ab\u30f3\u30de\uff09\n    $data = json_decode($invalid_json, false, 512, JSON_THROW_ON_ERROR);\n} catch (JsonException $e) {\n    echo \"JSON\u30a8\u30e9\u30fc: \" . $e-&gt;getMessage(); \/\/ \"JSON\u30a8\u30e9\u30fc: Syntax error\"\u304c\u8868\u793a\u3055\u308c\u308b\n}\n\n\/\/ JSON_BIGINT_AS_STRING: \u5927\u304d\u306a\u6574\u6570\u3092\u6587\u5b57\u5217\u3068\u3057\u3066\u6271\u3046\n$big_number = '{\"id\": 9223372036854775807}'; \/\/ PHP\u306eint\u306e\u6700\u5927\u5024\n$result1 = json_decode($big_number); \/\/ \u7cbe\u5ea6\u304c\u5931\u308f\u308c\u308b\u53ef\u80fd\u6027\n$result2 = json_decode($big_number, false, 512, JSON_BIGINT_AS_STRING); \/\/ \u6587\u5b57\u5217\u3068\u3057\u3066\u4fdd\u6301\n\n\/\/ \u8907\u6570\u30d5\u30e9\u30b0\u306e\u7d44\u307f\u5408\u308f\u305b\n$options = JSON_THROW_ON_ERROR | JSON_BIGINT_AS_STRING;\n$result = json_decode($json, false, 512, $options);\n<\/pre>\n\n\n\n<p>\u4e3b\u8981\u306a\u30d5\u30e9\u30b0\u3068\u305d\u306e\u7528\u9014\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\uff1a<\/p>\n\n\n<div id=\"id-c7774559-0607-41e3-adc0-b33665d9a44a\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u30d5\u30e9\u30b0<\/th><th>\u8aac\u660e<\/th><\/tr><\/thead><tbody><tr><td>JSON_THROW_ON_ERROR<\/td><td>\u30a8\u30e9\u30fc\u6642\u306b<code>JsonException<\/code>\u3092\u30b9\u30ed\u30fc\uff08\u30a8\u30e9\u30fc\u30c1\u30a7\u30c3\u30af\u304c\u7c21\u6f54\u306b\u306a\u308b\uff09<\/td><\/tr><tr><td>JSON_BIGINT_AS_STRING<\/td><td>\u5927\u304d\u306a\u6574\u6570\u5024\u3092\u6587\u5b57\u5217\u3068\u3057\u3066\u6271\u3046\uff08\u7cbe\u5ea6\u640d\u5931\u3092\u9632\u3050\uff09<\/td><\/tr><tr><td>JSON_INVALID_UTF8_IGNORE<\/td><td>\u7121\u52b9\u306aUTF-8\u30b7\u30fc\u30b1\u30f3\u30b9\u3092\u7121\u8996<\/td><\/tr><tr><td>JSON_INVALID_UTF8_SUBSTITUTE<\/td><td>\u7121\u52b9\u306aUTF-8\u30b7\u30fc\u30b1\u30f3\u30b9\u3092\u7f6e\u63db\u6587\u5b57\u306b\u7f6e\u304d\u63db\u3048<\/td><\/tr><tr><td>JSON_OBJECT_AS_ARRAY<\/td><td>\u7b2c2\u5f15\u6570\u306b<code>true<\/code>\u3092\u6307\u5b9a\u3059\u308b\u306e\u3068\u540c\u7b49\uff08\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u914d\u5217\u3068\u3057\u3066\u6271\u3046\uff09<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<p>\u7279\u306b<code>JSON_THROW_ON_ERROR<\/code>\u30d5\u30e9\u30b0\u306f\u3001\u5f93\u6765\u306e<code>json_last_error()<\/code>\u306b\u3088\u308b\u30a8\u30e9\u30fc\u30c1\u30a7\u30c3\u30af\u3088\u308a\u3082\u52b9\u7387\u7684\u306a\u30a8\u30e9\u30fc\u51e6\u7406\u3092\u53ef\u80fd\u306b\u3057\u307e\u3059\u3002\u307e\u305f\u3001<code>JSON_BIGINT_AS_STRING<\/code>\u306f\u91d1\u878d\u30c7\u30fc\u30bf\u306a\u3069\u3001\u5927\u304d\u306a\u6570\u5024\u3092\u6271\u3046\u969b\u306b\u7cbe\u5ea6\u306e\u554f\u984c\u3092\u56de\u907f\u3059\u308b\u305f\u3081\u306b\u91cd\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u30e2\u30c0\u30f3\u306aPHP\u958b\u767a\u3067\u306f\u3001\u30bf\u30a4\u30d7\u30d2\u30f3\u30c6\u30a3\u30f3\u30b0\u3084\u4f8b\u5916\u51e6\u7406\u3092\u6d3b\u7528\u3059\u308b\u30b3\u30fc\u30c9\u30b9\u30bf\u30a4\u30eb\u304c\u4e00\u822c\u7684\u306b\u306a\u3063\u3066\u304a\u308a\u3001<code>JSON_THROW_ON_ERROR<\/code>\u30d5\u30e9\u30b0\u306e\u4f7f\u7528\u304c\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3068\u3057\u3066\u63a8\u5968\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-12\">4. json_decode\u3067\u767a\u751f\u3059\u308b\u4e3b\u306a\u30a8\u30e9\u30fc\u3068\u5bfe\u51e6\u6cd5<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-13\">NULL\u8fd4\u5374\u306e\u539f\u56e0\uff1aJSON\u306e\u69cb\u6587\u30a8\u30e9\u30fc\u3092\u7279\u5b9a\u3059\u308b\u65b9\u6cd5<\/h3>\n\n\n\n<p><code>json_decode<\/code>\u95a2\u6570\u306f\u3001\u30c7\u30b3\u30fc\u30c9\u306b\u5931\u6557\u3057\u305f\u5834\u5408\u306b<code>NULL<\/code>\u3092\u8fd4\u3057\u307e\u3059\u3002\u3053\u306eNULL\u8fd4\u5374\u306e\u4e3b\u306a\u539f\u56e0\u3068\u5bfe\u51e6\u6cd5\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u3067\u3001\u30c7\u30d0\u30c3\u30b0\u306e\u52b9\u7387\u304c\u5927\u5e45\u306b\u5411\u4e0a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u4ee3\u8868\u7684\u306aNULL\u8fd4\u5374\u306e\u539f\u56e0\u306b\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u3082\u306e\u304c\u3042\u308a\u307e\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>JSON\u69cb\u6587\u30a8\u30e9\u30fc<\/strong>\uff1a\u6700\u3082\u4e00\u822c\u7684\u306a\u539f\u56e0\u3067\u3059\n<ul class=\"wp-block-list\">\n<li>\u672b\u5c3e\u306e\u4f59\u5206\u306a\u30ab\u30f3\u30de<\/li>\n\n\n\n<li>\u30d7\u30ed\u30d1\u30c6\u30a3\u540d\u306e\u5f15\u7528\u7b26\u5fd8\u308c<\/li>\n\n\n\n<li>\u62ec\u5f27\u3084\u30d6\u30ec\u30fc\u30b9\u306e\u4e0d\u4e00\u81f4<\/li>\n\n\n\n<li>\u5024\u306e\u578b\u4e0d\u4e00\u81f4\uff08\u6587\u5b57\u5217\u306b\u306a\u308b\u3079\u304d\u5024\u304c\u5f15\u7528\u7b26\u3067\u56f2\u307e\u308c\u3066\u3044\u306a\u3044\u306a\u3069\uff09<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u306e\u554f\u984c<\/strong>\uff1a\u7279\u306b\u65e5\u672c\u8a9e\u306a\u3069\u306e\u975eASCII\u6587\u5b57\u3092\u542b\u3080\u5834\u5408\n<ul class=\"wp-block-list\">\n<li>\u7121\u52b9\u306aUTF-8\u30b7\u30fc\u30b1\u30f3\u30b9<\/li>\n\n\n\n<li>\u30a8\u30b9\u30b1\u30fc\u30d7\u3055\u308c\u3066\u3044\u306a\u3044\u7279\u6b8a\u6587\u5b57<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u305d\u306e\u4ed6\u306e\u539f\u56e0<\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li>\u7a7a\u306e\u6587\u5b57\u5217\u3092\u6e21\u3057\u305f<\/li>\n\n\n\n<li>\u6587\u5b57\u5217\u3067\u306f\u306a\u3044\u5024\u3092\u6e21\u3057\u305f<\/li>\n\n\n\n<li>\u6700\u5927\u30cd\u30b9\u30c8\u6df1\u5ea6\u3092\u8d85\u3048\u305f<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<p>NULL\u8fd4\u5374\u3092\u691c\u51fa\u3057\u305f\u5834\u5408\u306e\u57fa\u672c\u7684\u306a\u30c7\u30d0\u30c3\u30b0\u30a2\u30d7\u30ed\u30fc\u30c1\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 = '{\"name\": \"\u5c71\u7530\u592a\u90ce\", \"age\": 30,}'; \/\/ \u672b\u5c3e\u306b\u30ab\u30f3\u30de\uff08\u7121\u52b9\u306aJSON\uff09\n$data = json_decode($json);\n\nif ($data === null) {\n    \/\/ 1. \u307e\u305a\u306fJSON\u6587\u5b57\u5217\u3092\u51fa\u529b\u3057\u3066\u78ba\u8a8d\n    echo \"\u30c7\u30b3\u30fc\u30c9\u3057\u3088\u3046\u3068\u3057\u305fJSON: \" . $json . \"\\n\";\n    \n    \/\/ 2. \u30a8\u30e9\u30fc\u60c5\u5831\u3092\u53d6\u5f97\n    echo \"\u30a8\u30e9\u30fc\u30b3\u30fc\u30c9: \" . json_last_error() . \"\\n\";\n    echo \"\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8: \" . json_last_error_message() . \"\\n\";\n}\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-14\">json_last_error\u95a2\u6570\u3067\u30a8\u30e9\u30fc\u60c5\u5831\u3092\u53d6\u5f97\u3059\u308b<\/h3>\n\n\n\n<p>PHP\u306f<code>json_decode<\/code>\u306e\u5931\u6557\u7406\u7531\u3092\u7279\u5b9a\u3059\u308b\u305f\u3081\u306e2\u3064\u306e\u95a2\u6570\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\uff1a<code>json_last_error()<\/code>\u3068<code>json_last_error_message()<\/code>\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30a8\u30e9\u30fc\u3092\u4f34\u3046json_decode\u306e\u4f8b\n$invalid_json = '{\"name\": \"\u7530\u4e2d\", \"skills\": [\"PHP\", \"JavaScript\",]}'; \/\/ \u7121\u52b9\u306aJSON\n$result = json_decode($invalid_json);\n\n\/\/ \u30a8\u30e9\u30fc\u30c1\u30a7\u30c3\u30af\n$error_code = json_last_error();\n$error_message = json_last_error_message();\n\necho \"\u30a8\u30e9\u30fc\u30b3\u30fc\u30c9: \" . $error_code . \"\\n\";\necho \"\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8: \" . $error_message . \"\\n\";\n<\/pre>\n\n\n\n<p>\u4e3b\u306a\u30a8\u30e9\u30fc\u30b3\u30fc\u30c9\u3068\u305d\u306e\u610f\u5473\uff1a<\/p>\n\n\n<div id=\"id-38636fe4-d19f-4d67-85d2-a8000bf38fce\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u5b9a\u6570<\/th><th>\u5024<\/th><th>\u8aac\u660e<\/th><\/tr><\/thead><tbody><tr><td>JSON_ERROR_NONE<\/td><td>0<\/td><td>\u30a8\u30e9\u30fc\u306a\u3057<\/td><\/tr><tr><td>JSON_ERROR_DEPTH<\/td><td>1<\/td><td>\u6700\u5927\u30b9\u30bf\u30c3\u30af\u6df1\u5ea6\u8d85\u904e<\/td><\/tr><tr><td>JSON_ERROR_STATE_MISMATCH<\/td><td>2<\/td><td>\u30a2\u30f3\u30c0\u30fc\u30d5\u30ed\u30fc\u307e\u305f\u306f\u30e2\u30fc\u30c9\u306e\u4e0d\u4e00\u81f4<\/td><\/tr><tr><td>JSON_ERROR_CTRL_CHAR<\/td><td>3<\/td><td>\u4e88\u671f\u3057\u306a\u3044\u5236\u5fa1\u6587\u5b57\u3092\u767a\u898b<\/td><\/tr><tr><td>JSON_ERROR_SYNTAX<\/td><td>4<\/td><td>\u69cb\u6587\u30a8\u30e9\u30fc<\/td><\/tr><tr><td>JSON_ERROR_UTF8<\/td><td>5<\/td><td>UTF-8\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u30a8\u30e9\u30fc<\/td><\/tr><tr><td>JSON_ERROR_RECURSION<\/td><td>6<\/td><td>\u518d\u5e30\u53c2\u7167\u304c\u691c\u51fa\u3055\u308c\u305f<\/td><\/tr><tr><td>JSON_ERROR_INF_OR_NAN<\/td><td>7<\/td><td>INF\u307e\u305f\u306fNAN\u304c\u691c\u51fa\u3055\u308c\u305f<\/td><\/tr><tr><td>JSON_ERROR_UNSUPPORTED_TYPE<\/td><td>8<\/td><td>\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u3066\u3044\u306a\u3044\u578b<\/td><\/tr><tr><td>JSON_ERROR_INVALID_PROPERTY_NAME<\/td><td>9<\/td><td>\u7121\u52b9\u306a\u30d7\u30ed\u30d1\u30c6\u30a3\u540d<\/td><\/tr><tr><td>JSON_ERROR_UTF16<\/td><td>10<\/td><td>UTF-16\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u30a8\u30e9\u30fc<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<p>\u5b9f\u52d9\u3067\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30a8\u30e9\u30fc\u30c1\u30a7\u30c3\u30af\u306e\u30d8\u30eb\u30d1\u30fc\u95a2\u6570\u3092\u4f5c\u6210\u3059\u308b\u3068\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=\"\">function decodeJsonSafely($json) {\n    $data = json_decode($json);\n    \n    if (json_last_error() !== JSON_ERROR_NONE) {\n        throw new Exception(\"JSON\u30c7\u30b3\u30fc\u30c9\u30a8\u30e9\u30fc: \" . json_last_error_message());\n    }\n    \n    return $data;\n}\n\n\/\/ \u4f7f\u7528\u4f8b\ntry {\n    $data = decodeJsonSafely($json_string);\n    \/\/ \u30c7\u30fc\u30bf\u3092\u51e6\u7406...\n} catch (Exception $e) {\n    \/\/ \u30a8\u30e9\u30fc\u30ed\u30b0\u8a18\u9332\u3084\u30a8\u30e9\u30fc\u8868\u793a\n    error_log($e-&gt;getMessage());\n}\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-15\">\u4e00\u822c\u7684\u306aJSON\u69cb\u6587\u30a8\u30e9\u30fc\u3068\u305d\u306e\u4fee\u6b63\u65b9\u6cd5<\/h3>\n\n\n\n<p>\u5b9f\u969b\u306e\u958b\u767a\u3067\u906d\u9047\u3057\u3084\u3059\u3044JSON\u69cb\u6587\u30a8\u30e9\u30fc\u3068\u305d\u306e\u5bfe\u51e6\u6cd5\u3092\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u672b\u5c3e\u306e\u30ab\u30f3\u30de\u554f\u984c<\/strong> <code>\/\/ \u4e0d\u6b63\u306aJSON $invalid = '{\"name\": \"\u4f50\u85e4\", \"age\": 25,}'; \/\/ \u672b\u5c3e\u306e\u30ab\u30f3\u30de\u306f\u7121\u52b9 \/\/ \u6b63\u3057\u3044JSON $valid = '{\"name\": \"\u4f50\u85e4\", \"age\": 25}';<\/code><\/li>\n\n\n\n<li><strong>\u30d7\u30ed\u30d1\u30c6\u30a3\u540d\u306e\u5f15\u7528\u7b26\u5fd8\u308c<\/strong> <code>\/\/ \u4e0d\u6b63\u306aJSON $invalid = '{name: \"\u7530\u4e2d\", age: 30}'; \/\/ \u30d7\u30ed\u30d1\u30c6\u30a3\u540d\u306b\u5f15\u7528\u7b26\u304c\u306a\u3044 \/\/ \u6b63\u3057\u3044JSON $valid = '{\"name\": \"\u7530\u4e2d\", \"age\": 30}';<\/code><\/li>\n\n\n\n<li><strong>\u5024\u306e\u578b\u4e0d\u4e00\u81f4<\/strong> <code>\/\/ \u4e0d\u6b63\u306aJSON $invalid = '{\"age\": 30years}'; \/\/ \"30years\"\u306f\u6587\u5b57\u5217\u3068\u3057\u3066\u5f15\u7528\u7b26\u3067\u56f2\u3080\u5fc5\u8981\u304c\u3042\u308b \/\/ \u6b63\u3057\u3044JSON $valid = '{\"age\": \"30years\"}'; \/\/ \u6587\u5b57\u5217\u3068\u3057\u3066\u6271\u3046\u5834\u5408 \/\/ \u307e\u305f\u306f $valid = '{\"age\": 30}'; \/\/ \u6570\u5024\u3068\u3057\u3066\u6271\u3046\u5834\u5408<\/code><\/li>\n\n\n\n<li><strong>\u5358\u4e00\u5f15\u7528\u7b26\u306e\u4f7f\u7528<\/strong> <code>\/\/ \u4e0d\u6b63\u306aJSON $invalid = \"{'name': '\u5c71\u672c'}\"; \/\/ JSON\u3067\u306f\u5358\u4e00\u5f15\u7528\u7b26\u306f\u7121\u52b9 \/\/ \u6b63\u3057\u3044JSON $valid = '{\"name\": \"\u5c71\u672c\"}';<\/code><\/li>\n\n\n\n<li><strong>Unicode\u6587\u5b57\u306e\u30a8\u30b9\u30b1\u30fc\u30d7<\/strong> <code>\/\/ \u6f5c\u5728\u7684\u306b\u554f\u984c\u306e\u3042\u308bJSON $possibly_invalid = '{\"name\": \"\u9ad8\u6a4b\"}'; \/\/ UTF-8\u3067\u30a8\u30f3\u30b3\u30fc\u30c9\u3055\u308c\u3066\u3044\u308c\u3070\u6709\u52b9 \/\/ \u78ba\u5b9f\u306b\u6709\u52b9\u306aJSON $definitely_valid = '{\"name\": \"\\u9ad8\\u6a4b\"}'; \/\/ Unicode\u30a8\u30b9\u30b1\u30fc\u30d7\u30b7\u30fc\u30b1\u30f3\u30b9<\/code><\/li>\n<\/ol>\n\n\n\n<p>\u8907\u96d1\u306aJSON\u30c7\u30fc\u30bf\u3092\u6271\u3046\u969b\u306e\u30c7\u30d0\u30c3\u30b0\u306e\u305f\u3081\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u6bb5\u968e\u7684\u306a\u30c7\u30d0\u30c3\u30b0<\/strong>: \u5927\u304d\u306aJSON\u3092\u5c0f\u3055\u306a\u90e8\u5206\u306b\u5206\u5272\u3057\u3066\u500b\u5225\u306b\u30c6\u30b9\u30c8<\/li>\n\n\n\n<li><strong>JSON\u30d0\u30ea\u30c7\u30fc\u30bf\u30fc<\/strong>: \u30aa\u30f3\u30e9\u30a4\u30f3\u30c4\u30fc\u30eb\u3092\u5229\u7528\u3057\u3066JSON\u306e\u69cb\u6587\u3092\u691c\u8a3c<\/li>\n\n\n\n<li><strong>JSON_THROW_ON_ERROR<\/strong>: PHP 7.3\u4ee5\u964d\u3067\u306f\u3001\u3053\u306e\u30d5\u30e9\u30b0\u3092\u4f7f\u7528\u3057\u3066\u4f8b\u5916\u30d9\u30fc\u30b9\u306e\u30a8\u30e9\u30fc\u51e6\u7406\u3092\u884c\u3046<\/li>\n\n\n\n<li><strong>\u30a8\u30e9\u30fc\u30ed\u30b0\u306e\u6d3b\u7528<\/strong>: \u672c\u756a\u74b0\u5883\u3067\u306f\u30a8\u30e9\u30fc\u3092\u9069\u5207\u306b\u30ed\u30b0\u306b\u8a18\u9332\u3059\u308b<\/li>\n\n\n\n<li><strong>\u30c7\u30fc\u30bf\u306e\u691c\u8a3c<\/strong>: API\u304b\u3089\u306e\u30ec\u30b9\u30dd\u30f3\u30b9\u306a\u3069\u5916\u90e8\u30c7\u30fc\u30bf\u3092\u4fe1\u983c\u305b\u305a\u3001\u5e38\u306b\u691c\u8a3c\u3059\u308b<\/li>\n<\/ol>\n\n\n\n<p>\u6b63\u3057\u3044JSON\u3092\u751f\u6210\u3059\u308b\u306b\u306f<code>json_encode()<\/code>\u95a2\u6570\u3092\u4f7f\u7528\u3057\u3001\u624b\u52d5\u3067JSON\u3092\u69cb\u7bc9\u3059\u308b\u3053\u3068\u3092\u907f\u3051\u308b\u306e\u304c\u6700\u5584\u306e\u65b9\u6cd5\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-16\">5. json_decode\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3068\u6700\u9069\u5316\u30c6\u30af\u30cb\u30c3\u30af<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-17\">\u5927\u91cf\u306eJSON\u30c7\u30fc\u30bf\u3092\u51e6\u7406\u3059\u308b\u969b\u306e\u52b9\u7387\u5316\u624b\u6cd5<\/h3>\n\n\n\n<p>\u5927\u898f\u6a21\u306aJSON\u30c7\u30fc\u30bf\u3092\u6271\u3046\u969b\u3001\u6a19\u6e96\u306e<code>json_decode<\/code>\u95a2\u6570\u306f\u3059\u3079\u3066\u306e\u30c7\u30fc\u30bf\u3092\u30e1\u30e2\u30ea\u306b\u8aad\u307f\u8fbc\u3080\u5fc5\u8981\u304c\u3042\u308a\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u4e0a\u306e\u8ab2\u984c\u304c\u751f\u3058\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u52b9\u7387\u5316\u306e\u305f\u3081\u306e\u30a2\u30d7\u30ed\u30fc\u30c1\u3092\u7d39\u4ecb\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<p><strong>1. \u90e8\u5206\u7684\u306a\u89e3\u6790\u624b\u6cd5<\/strong><\/p>\n\n\n\n<p>\u5de8\u5927\u306aJSON\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u306e\u3046\u3061\u3001\u5b9f\u969b\u306b\u5fc5\u8981\u306a\u90e8\u5206\u3060\u3051\u3092\u51e6\u7406\u3059\u308b\u624b\u6cd5\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=\"\">\/\/ \u5927\u304d\u306aJSON\u30d5\u30a1\u30a4\u30eb\u304b\u3089\u7279\u5b9a\u306e\u30ad\u30fc\u3060\u3051\u3092\u53d6\u308a\u51fa\u3059\nfunction extractSpecificKeys($jsonString, $keysToExtract) {\n    \/\/ \u5168\u4f53\u3092\u30c7\u30b3\u30fc\u30c9\u3059\u308b\u524d\u306b\u6b63\u898f\u8868\u73fe\u3067\u5fc5\u8981\u306a\u90e8\u5206\u3092\u62bd\u51fa\n    $result = [];\n    \n    foreach ($keysToExtract as $key) {\n        if (preg_match('\/\"' . $key . '\"\\s*:\\s*(\"[^\"]*\"|[\\d\\.]+|\\{[^}]*\\}|\\[[^\\]]*\\])\/', $jsonString, $matches)) {\n            $value = $matches[1];\n            \/\/ \u62bd\u51fa\u3057\u305f\u5024\u306e\u30bf\u30a4\u30d7\u306b\u5fdc\u3058\u3066\u51e6\u7406\n            if ($value[0] === '\"') {\n                $result[$key] = substr($value, 1, -1);\n            } elseif ($value[0] === '{' || $value[0] === '[') {\n                $result[$key] = json_decode($value);\n            } else {\n                $result[$key] = is_numeric($value) ? (float)$value : $value;\n            }\n        }\n    }\n    \n    return $result;\n}\n<\/pre>\n\n\n\n<p><strong>2. \u30b9\u30c8\u30ea\u30fc\u30df\u30f3\u30b0\u30d9\u30fc\u30b9\u306e\u30d1\u30fc\u30b5\u30fc<\/strong><\/p>\n\n\n\n<p>\u5927\u898f\u6a21\u306aJSON\u3092\u5c11\u3057\u305a\u3064\u51e6\u7406\u3059\u308b\u305f\u3081\u306b\u3001\u30b9\u30c8\u30ea\u30fc\u30df\u30f3\u30b0\u30d1\u30fc\u30b5\u30fc\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f7f\u7528\u3059\u308b\u65b9\u6cd5\u3082\u3042\u308a\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3\u306eJSON\u30b9\u30c8\u30ea\u30fc\u30df\u30f3\u30b0\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u4f8b\uff08\u5b9f\u969b\u306b\u306fcomposer\u3067\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\uff09\n\/\/ composer require salsify\/json-streaming-parser\n\nuse JsonStreamingParser\\Parser;\nuse JsonStreamingParser\\Listener\\InMemoryListener;\n\n$stream = fopen('large_data.json', 'r');\n$listener = new InMemoryListener();\n$parser = new Parser($stream, $listener);\n$parser-&gt;parse();\n$data = $listener-&gt;getJson();\n<\/pre>\n\n\n\n<p><strong>3. \u30d0\u30c3\u30c1\u51e6\u7406<\/strong><\/p>\n\n\n\n<p>\u5927\u304d\u306aJSON\u30d5\u30a1\u30a4\u30eb\u3092\u5c0f\u3055\u306a\u30c1\u30e3\u30f3\u30af\u306b\u5206\u3051\u3066\u51e6\u7406\u3059\u308b\u65b9\u6cd5\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u5de8\u5927\u306aJSON\u30d5\u30a1\u30a4\u30eb\u30921000\u4ef6\u305a\u3064\u51e6\u7406\u3059\u308b\u4f8b\n$jsonData = json_decode(file_get_contents('huge_data.json'), true);\n$chunkSize = 1000;\n\nfor ($i = 0; $i &lt; count($jsonData); $i += $chunkSize) {\n    $chunk = array_slice($jsonData, $i, $chunkSize);\n    processChunk($chunk);\n    \/\/ \u5404\u30c1\u30e3\u30f3\u30af\u51e6\u7406\u5f8c\u306b\u30e1\u30e2\u30ea\u3092\u89e3\u653e\n    unset($chunk);\n}\n\nfunction processChunk($data) {\n    foreach ($data as $item) {\n        \/\/ \u5404\u30a2\u30a4\u30c6\u30e0\u306e\u51e6\u7406...\n    }\n}\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-18\">\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u3092\u6291\u3048\u308b\u305f\u3081\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/h3>\n\n\n\n<p><code>json_decode<\/code>\u306e\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u3092\u6700\u9069\u5316\u3059\u308b\u305f\u3081\u306e\u30c6\u30af\u30cb\u30c3\u30af\u3092\u3044\u304f\u3064\u304b\u7d39\u4ecb\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<p><strong>1. \u914d\u5217\u5f62\u5f0f\u306e\u6d3b\u7528<\/strong><\/p>\n\n\n\n<p>\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u5f62\u5f0f\u3088\u308a\u3082\u914d\u5217\u5f62\u5f0f\uff08\u7b2c2\u5f15\u6570\u3092<code>true<\/code>\uff09\u306b\u3059\u308b\u3053\u3068\u3067\u3001\u82e5\u5e72\u306e\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u524a\u6e1b\u304c\u53ef\u80fd\u3067\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u5f62\u5f0f\uff08\u6a19\u6e96\uff09\n$dataAsObject = json_decode($largeJson);\n\n\/\/ \u914d\u5217\u5f62\u5f0f\uff08\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u304c\u3084\u3084\u5c11\u306a\u3044\uff09\n$dataAsArray = json_decode($largeJson, true);\n<\/pre>\n\n\n\n<p><strong>2. \u5fc5\u8981\u306a\u30c7\u30fc\u30bf\u3060\u3051\u3092\u53d6\u5f97<\/strong><\/p>\n\n\n\n<p>JSON\u30d5\u30a1\u30a4\u30eb\u304c\u5de8\u5927\u3067\u3001\u305d\u306e\u4e00\u90e8\u3060\u3051\u304c\u5fc5\u8981\u306a\u5834\u5408\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30a2\u30d7\u30ed\u30fc\u30c1\u304c\u6709\u52b9\u3067\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u5fc5\u8981\u306a\u30c7\u30fc\u30bf\u3060\u3051\u3092\u4fdd\u6301\u3057\u3001\u4e0d\u8981\u306a\u30c7\u30fc\u30bf\u3092\u89e3\u653e\n$data = json_decode($hugeJson, true);\n$requiredData = $data['specific_section']; \/\/ \u5fc5\u8981\u306a\u90e8\u5206\u3060\u3051\u3092\u62bd\u51fa\nunset($data); \/\/ \u5143\u306e\u30c7\u30fc\u30bf\u3092\u89e3\u653e\n<\/pre>\n\n\n\n<p><strong>3. \u30b8\u30a7\u30cd\u30ec\u30fc\u30bf\u306e\u6d3b\u7528<\/strong><\/p>\n\n\n\n<p>PHP\u306e\u30b8\u30a7\u30cd\u30ec\u30fc\u30bf\u3092\u4f7f\u7528\u3057\u3066\u5927\u304d\u306a\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u3092\u30e1\u30e2\u30ea\u52b9\u7387\u826f\u304f\u51e6\u7406\u3059\u308b\u65b9\u6cd5\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=\"\">\/\/ \u5927\u304d\u306aJSON\u30c7\u30fc\u30bf\u3092\u30b8\u30a7\u30cd\u30ec\u30fc\u30bf\u3067\u51e6\u7406\nfunction processLargeArray($array) {\n    foreach ($array as $key =&gt; $value) {\n        yield $key =&gt; $value;\n        \/\/ \u5404\u30a4\u30c6\u30ec\u30fc\u30b7\u30e7\u30f3\u3054\u3068\u306b\u30e1\u30e2\u30ea\u3092\u89e3\u653e\n    }\n}\n\n\/\/ \u4f7f\u7528\u4f8b\n$data = json_decode($largeJson, true);\nforeach (processLargeArray($data) as $key =&gt; $item) {\n    \/\/ \u5404\u30a2\u30a4\u30c6\u30e0\u3092\u500b\u5225\u306b\u51e6\u7406\n    processItem($item);\n}\n<\/pre>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-19\">6. \u5b9f\u8df5\u7684\u306a\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\uff1ajson_decode\u306e\u5fdc\u7528\u4f8b<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-20\">API\u30ec\u30b9\u30dd\u30f3\u30b9\u306e\u51e6\u7406\uff1a\u5916\u90e8API\u3068\u306e\u9023\u643a\u65b9\u6cd5<\/h3>\n\n\n\n<p>\u73fe\u4ee3\u306eWeb\u958b\u767a\u3067\u306f\u3001\u5916\u90e8API\u3068\u306e\u9023\u643a\u306f\u65e5\u5e38\u7684\u306a\u30bf\u30b9\u30af\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u591a\u304f\u306eAPI\u306fJSON\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3067\u30c7\u30fc\u30bf\u3092\u8fd4\u3059\u305f\u3081\u3001<code>json_decode<\/code>\u306e\u9069\u5207\u306a\u6d3b\u7528\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u4ee5\u4e0b\u306f\u3001API\u304b\u3089\u306eJSON\u30ec\u30b9\u30dd\u30f3\u30b9\u3092\u51e6\u7406\u3059\u308b\u5b9f\u8df5\u7684\u306a\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=\"\">&lt;?php\n\/**\n * \u5916\u90e8API\u304b\u3089\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\u3057\u51e6\u7406\u3059\u308b\u95a2\u6570\n * \n * @param string $apiUrl API URL\n * @param array $params \u30ea\u30af\u30a8\u30b9\u30c8\u30d1\u30e9\u30e1\u30fc\u30bf\n * @return array \u51e6\u7406\u6e08\u307f\u30c7\u30fc\u30bf\n * @throws Exception API\u63a5\u7d9a\u30a8\u30e9\u30fc\u3084\u7121\u52b9\u306a\u30ec\u30b9\u30dd\u30f3\u30b9\u306e\u5834\u5408\n *\/\nfunction fetchApiData($apiUrl, $params = []) {\n    \/\/ cURL\u30bb\u30c3\u30b7\u30e7\u30f3\u306e\u521d\u671f\u5316\n    $ch = curl_init();\n    \n    \/\/ URL\u306b\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u8ffd\u52a0\n    if (!empty($params)) {\n        $apiUrl .= '?' . http_build_query($params);\n    }\n    \n    \/\/ cURL\u30aa\u30d7\u30b7\u30e7\u30f3\u306e\u8a2d\u5b9a\n    curl_setopt_array($ch, [\n        CURLOPT_URL =&gt; $apiUrl,\n        CURLOPT_RETURNTRANSFER =&gt; true,  \/\/ \u7d50\u679c\u3092\u6587\u5b57\u5217\u3068\u3057\u3066\u8fd4\u3059\n        CURLOPT_TIMEOUT =&gt; 30,           \/\/ \u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u8a2d\u5b9a\n        CURLOPT_HTTPHEADER =&gt; [\n            'Accept: application\/json',\n            'Content-Type: application\/json'\n        ]\n    ]);\n    \n    \/\/ API\u30ea\u30af\u30a8\u30b9\u30c8\u5b9f\u884c\n    $response = curl_exec($ch);\n    $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);\n    $error = curl_error($ch);\n    \n    curl_close($ch);\n    \n    \/\/ \u30a8\u30e9\u30fc\u51e6\u7406\n    if ($error) {\n        throw new Exception(\"API\u63a5\u7d9a\u30a8\u30e9\u30fc: $error\");\n    }\n    \n    \/\/ HTTP\u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9\u306e\u78ba\u8a8d\n    if ($httpCode &gt;= 400) {\n        throw new Exception(\"API\u30a8\u30e9\u30fc: HTTP\u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9 $httpCode\");\n    }\n    \n    \/\/ JSON\u30ec\u30b9\u30dd\u30f3\u30b9\u306e\u30c7\u30b3\u30fc\u30c9\uff08PHP 7.3\u4ee5\u964d\u306e\u4f8b\u5916\u51e6\u7406\uff09\n    try {\n        $data = json_decode($response, true, 512, JSON_THROW_ON_ERROR);\n    } catch (JsonException $e) {\n        throw new Exception(\"JSON\u30d1\u30fc\u30b9\u30a8\u30e9\u30fc: \" . $e-&gt;getMessage());\n    }\n    \n    \/\/ API\u306e\u30a8\u30e9\u30fc\u30ec\u30b9\u30dd\u30f3\u30b9\u51e6\u7406\uff08API\u306b\u3088\u3063\u3066\u5f62\u5f0f\u306f\u7570\u306a\u308b\uff09\n    if (isset($data['error'])) {\n        throw new Exception(\"API\u30a8\u30e9\u30fc: \" . $data['error']['message'] ?? '\u4e0d\u660e\u306a\u30a8\u30e9\u30fc');\n    }\n    \n    return $data;\n}\n\n\/\/ \u4f7f\u7528\u4f8b\uff1aGitHub API\u304b\u3089\u30e6\u30fc\u30b6\u30fc\u60c5\u5831\u3092\u53d6\u5f97\ntry {\n    $userData = fetchApiData('https:\/\/api.github.com\/users\/username');\n    echo \"GitHub\u30e6\u30fc\u30b6\u30fc\u540d: \" . $userData['login'] . \"\\n\";\n    echo \"\u30d5\u30a9\u30ed\u30ef\u30fc\u6570: \" . $userData['followers'] . \"\\n\";\n} catch (Exception $e) {\n    echo \"\u30a8\u30e9\u30fc: \" . $e-&gt;getMessage();\n}\n<\/pre>\n\n\n\n<p>\u3053\u306e\u30b3\u30fc\u30c9\u306f\u5b9f\u969b\u306eAPI\u30ea\u30af\u30a8\u30b9\u30c8\u306b\u5bfe\u5fdc\u3059\u308b\u305f\u3081\u306e\u30a8\u30e9\u30fc\u51e6\u7406\u3001\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u8a2d\u5b9a\u3001HTTP\u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9\u691c\u8a3c\u306a\u3069\u3001\u672c\u756a\u74b0\u5883\u3067\u3082\u4f7f\u3048\u308b\u5b9f\u88c5\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-21\">\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u3068\u3057\u3066\u306eJSON\u306e\u6d3b\u7528\u65b9\u6cd5<\/h3>\n\n\n\n<p>XML\u3084YAML\u3068\u4e26\u3093\u3067\u3001JSON\u306f\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u3068\u3057\u3066\u975e\u5e38\u306b\u4eba\u6c17\u306e\u3042\u308b\u5f62\u5f0f\u3067\u3059\u3002\u7279\u306b\u3001JavaScript\u7cfb\u306e\u30a8\u30b3\u30b7\u30b9\u30c6\u30e0\u3068\u306e\u4e92\u63db\u6027\u3084\u3001\u4eba\u9593\u304c\u8aad\u307f\u66f8\u304d\u3057\u3084\u3059\u3044\u70b9\u304c\u8a55\u4fa1\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u4ee5\u4e0b\u306b\u3001JSON\u3092\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u3068\u3057\u3066\u6d3b\u7528\u3059\u308b\u4f8b\u3092\u793a\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=\"\">&lt;?php\n\/**\n * JSON\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u8fbc\u3080\u30af\u30e9\u30b9\n * \u74b0\u5883\u5225\u306e\u8a2d\u5b9a\u5207\u308a\u66ff\u3048\u3068\u8a2d\u5b9a\u5024\u306e\u30ad\u30e3\u30c3\u30b7\u30f3\u30b0\u3092\u30b5\u30dd\u30fc\u30c8\n *\/\nclass ConfigManager {\n    private static $instance = null;\n    private $config = [];\n    private $configDir;\n    \n    \/**\n     * \u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf - \u8a2d\u5b9a\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3092\u6307\u5b9a\n     *\/\n    private function __construct($configDir = '..\/config') {\n        $this-&gt;configDir = $configDir;\n    }\n    \n    \/**\n     * \u30b7\u30f3\u30b0\u30eb\u30c8\u30f3\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u53d6\u5f97\n     *\/\n    public static function getInstance($configDir = '..\/config') {\n        if (self::$instance === null) {\n            self::$instance = new self($configDir);\n        }\n        return self::$instance;\n    }\n    \n    \/**\n     * \u74b0\u5883\u306b\u5fdc\u3058\u305f\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u8fbc\u3080\n     * \n     * @param string $env \u74b0\u5883\u540d\uff08development, production, testing\u306a\u3069\uff09\n     * @return ConfigManager\n     *\/\n    public function loadConfig($env = 'development') {\n        \/\/ \u57fa\u672c\u8a2d\u5b9a\u3092\u8aad\u307f\u8fbc\u307f\n        $baseConfigFile = $this-&gt;configDir . '\/config.base.json';\n        if (file_exists($baseConfigFile)) {\n            $baseConfig = $this-&gt;parseJsonFile($baseConfigFile);\n            $this-&gt;config = $baseConfig;\n        }\n        \n        \/\/ \u74b0\u5883\u5225\u8a2d\u5b9a\u3067\u4e0a\u66f8\u304d\n        $envConfigFile = $this-&gt;configDir . \"\/config.$env.json\";\n        if (file_exists($envConfigFile)) {\n            $envConfig = $this-&gt;parseJsonFile($envConfigFile);\n            $this-&gt;config = array_replace_recursive($this-&gt;config, $envConfig);\n        }\n        \n        return $this;\n    }\n    \n    \/**\n     * JSON\u30d5\u30a1\u30a4\u30eb\u3092\u89e3\u6790\u3057\u3066\u914d\u5217\u306b\u5909\u63db\n     *\/\n    private function parseJsonFile($file) {\n        $content = file_get_contents($file);\n        try {\n            return json_decode($content, true, 512, JSON_THROW_ON_ERROR);\n        } catch (JsonException $e) {\n            throw new Exception(\"\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb $file \u306e\u30d1\u30fc\u30b9\u30a8\u30e9\u30fc: \" . $e-&gt;getMessage());\n        }\n    }\n    \n    \/**\n     * \u8a2d\u5b9a\u5024\u3092\u53d6\u5f97\uff08\u30c9\u30c3\u30c8\u8a18\u6cd5\u30b5\u30dd\u30fc\u30c8\uff09\n     * \u4f8b: $config-&gt;get('database.host')\n     * \n     * @param string $key \u30c9\u30c3\u30c8\u8a18\u6cd5\u306e\u30ad\u30fc\n     * @param mixed $default \u30c7\u30d5\u30a9\u30eb\u30c8\u5024\n     * @return mixed \u8a2d\u5b9a\u5024\n     *\/\n    public function get($key = null, $default = null) {\n        if ($key === null) {\n            return $this-&gt;config;\n        }\n        \n        $keys = explode('.', $key);\n        $value = $this-&gt;config;\n        \n        foreach ($keys as $segment) {\n            if (!is_array($value) || !array_key_exists($segment, $value)) {\n                return $default;\n            }\n            $value = $value[$segment];\n        }\n        \n        return $value;\n    }\n}\n\n\/\/ \u4f7f\u7528\u4f8b\n$config = ConfigManager::getInstance()-&gt;loadConfig('production');\n$dbHost = $config-&gt;get('database.mysql.host', 'localhost');\n$apiKey = $config-&gt;get('api.key');\n<\/pre>\n\n\n\n<p>\u3053\u306e\u5b9f\u88c5\u3067\u306f\u3001\u57fa\u672c\u8a2d\u5b9a\u3068\u74b0\u5883\u56fa\u6709\u306e\u8a2d\u5b9a\u3092\u5206\u96e2\u3057\u3001\u74b0\u5883\u306b\u5fdc\u3058\u3066\u9069\u5207\u306a\u8a2d\u5b9a\u3092\u8aad\u307f\u8fbc\u3080\u4ed5\u7d44\u307f\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002\u307e\u305f\u3001\u30c9\u30c3\u30c8\u8a18\u6cd5\u306b\u3088\u308b\u968e\u5c64\u7684\u306a\u8a2d\u5b9a\u5024\u3078\u306e\u30a2\u30af\u30bb\u30b9\u3082\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-22\">\u8907\u96d1\u306a\u30cd\u30b9\u30c8\u3055\u308c\u305fJSON\u30c7\u30fc\u30bf\u306e\u52b9\u7387\u7684\u306a\u51e6\u7406\u6cd5<\/h3>\n\n\n\n<p>API\u30ec\u30b9\u30dd\u30f3\u30b9\u3084\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u3068\u3057\u3066\u53d7\u3051\u53d6\u308bJSON\u30c7\u30fc\u30bf\u306f\u3001\u3057\u3070\u3057\u3070\u8907\u96d1\u306b\u30cd\u30b9\u30c8\u3055\u308c\u305f\u69cb\u9020\u3092\u6301\u3063\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u3088\u3046\u306a\u8907\u96d1\u306a\u30c7\u30fc\u30bf\u3092\u52b9\u7387\u7684\u306b\u51e6\u7406\u3059\u308b\u305f\u3081\u306e\u30c6\u30af\u30cb\u30c3\u30af\u3092\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p><strong>1. \u518d\u5e30\u7684\u306a\u51e6\u7406<\/strong><\/p>\n\n\n\n<p>\u6df1\u304f\u30cd\u30b9\u30c8\u3055\u308c\u305f\u30c7\u30fc\u30bf\u3092\u518d\u5e30\u7684\u306b\u51e6\u7406\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=\"\">&lt;?php\n\/**\n * \u8907\u96d1\u306a\u30cd\u30b9\u30c8\u3055\u308c\u305fJSON\u30c7\u30fc\u30bf\u5185\u306e\u7279\u5b9a\u306e\u30ad\u30fc\u3092\u6301\u3064\u5024\u3092\u3059\u3079\u3066\u62bd\u51fa\n * \n * @param array $data JSON\u30c7\u30fc\u30bf\n * @param string $targetKey \u63a2\u7d22\u3059\u308b\u30ad\u30fc\n * @return array \u8a72\u5f53\u3059\u308b\u3059\u3079\u3066\u306e\u5024\u306e\u914d\u5217\n *\/\nfunction findAllValuesByKey($data, $targetKey) {\n    $results = [];\n    \n    \/\/ \u914d\u5217\u307e\u305f\u306f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u518d\u5e30\u7684\u306b\u63a2\u7d22\n    if (is_array($data) || is_object($data)) {\n        foreach ($data as $key =&gt; $value) {\n            \/\/ \u30ad\u30fc\u304c\u4e00\u81f4\u3059\u308b\u5834\u5408\u306f\u7d50\u679c\u306b\u8ffd\u52a0\n            if ($key === $targetKey) {\n                $results[] = $value;\n            }\n            \n            \/\/ \u5024\u304c\u914d\u5217\u307e\u305f\u306f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u5834\u5408\u306f\u518d\u5e30\u7684\u306b\u63a2\u7d22\n            if (is_array($value) || is_object($value)) {\n                $childResults = findAllValuesByKey($value, $targetKey);\n                $results = array_merge($results, $childResults);\n            }\n        }\n    }\n    \n    return $results;\n}\n\n\/\/ \u4f7f\u7528\u4f8b\uff1a\u3059\u3079\u3066\u306e\"id\"\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u62bd\u51fa\n$jsonData = json_decode($complexJson, true);\n$allIds = findAllValuesByKey($jsonData, 'id');\n<\/pre>\n\n\n\n<p><strong>2. \u914d\u5217\u64cd\u4f5c\u95a2\u6570\u306e\u6d3b\u7528<\/strong><\/p>\n\n\n\n<p>PHP\u306e\u914d\u5217\u64cd\u4f5c\u95a2\u6570\u3092\u6d3b\u7528\u3057\u3066\u8907\u96d1\u306a\u30c7\u30fc\u30bf\u3092\u51e6\u7406\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=\"\">&lt;?php\n\/**\n * \u30cd\u30b9\u30c8\u3055\u308c\u305f\u914d\u5217\u3092\u30d5\u30e9\u30c3\u30c8\u5316\u3059\u308b\n * \n * @param array $data \u30cd\u30b9\u30c8\u3055\u308c\u305f\u914d\u5217\n * @param string $prefix \u30ad\u30fc\u306e\u30d7\u30ec\u30d5\u30a3\u30c3\u30af\u30b9\uff08\u518d\u5e30\u547c\u3073\u51fa\u3057\u7528\uff09\n * @param string $delimiter \u30ad\u30fc\u533a\u5207\u308a\u6587\u5b57\n * @return array \u30d5\u30e9\u30c3\u30c8\u5316\u3055\u308c\u305f\u914d\u5217\n *\/\nfunction flattenArray($data, $prefix = '', $delimiter = '.') {\n    $result = [];\n    \n    foreach ($data as $key =&gt; $value) {\n        $newKey = $prefix ? $prefix . $delimiter . $key : $key;\n        \n        if (is_array($value) &amp;&amp; !empty($value)) {\n            \/\/ \u914d\u5217\u306e\u5834\u5408\u306f\u518d\u5e30\u7684\u306b\u51e6\u7406\n            $result = array_merge($result, flattenArray($value, $newKey, $delimiter));\n        } else {\n            \/\/ \u30b9\u30ab\u30e9\u30fc\u5024\u306e\u5834\u5408\u306f\u305d\u306e\u307e\u307e\u8ffd\u52a0\n            $result[$newKey] = $value;\n        }\n    }\n    \n    return $result;\n}\n\n\/\/ \u4f7f\u7528\u4f8b\uff1a\u8907\u96d1\u306aJSON\u3092\u30d5\u30e9\u30c3\u30c8\u306a\u914d\u5217\u306b\u5909\u63db\n$jsonData = json_decode($complexJson, true);\n$flatData = flattenArray($jsonData);\n\n\/\/ \u7d50\u679c\uff1a['user.id' =&gt; 123, 'user.profile.name' =&gt; '\u7530\u4e2d\u592a\u90ce', ...]\n<\/pre>\n\n\n\n<p><strong>3. JSON\u30d1\u30b9\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u6d3b\u7528<\/strong><\/p>\n\n\n\n<p>\u8907\u96d1\u306aJSON\u3092\u6271\u3046\u5834\u5408\u3001JSONPath\uff08XPath\u306eJSON\u7248\uff09\u3092\u4f7f\u7528\u3059\u308b\u3068\u4fbf\u5229\u3067\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;?php\n\/\/ Composer\u3067\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb: composer require galbar\/jsonpath\n\nuse JsonPath\\JsonObject;\n\n\/\/ \u8907\u96d1\u306aJSON\u30c7\u30fc\u30bf\u3092\u51e6\u7406\n$jsonString = '{\n    \"users\": [\n        {\n            \"id\": 1,\n            \"name\": \"\u9234\u6728\u4e00\u90ce\",\n            \"roles\": [\"admin\", \"editor\"],\n            \"contacts\": {\n                \"email\": \"suzuki@example.com\",\n                \"phone\": \"090-1234-5678\"\n            }\n        },\n        {\n            \"id\": 2,\n            \"name\": \"\u4f50\u85e4\u4e8c\u90ce\",\n            \"roles\": [\"user\"],\n            \"contacts\": {\n                \"email\": \"sato@example.com\"\n            }\n        }\n    ]\n}';\n\n$jsonObj = new JsonObject($jsonString);\n\n\/\/ JSONPath\u3092\u4f7f\u7528\u3057\u3066\u7279\u5b9a\u306e\u5024\u3092\u62bd\u51fa\n$adminUsers = $jsonObj-&gt;get('$.users[?(@.roles contains \"admin\")]');\n$allEmails = $jsonObj-&gt;get('$.users[*].contacts.email');\n$secondUserName = $jsonObj-&gt;get('$.users[1].name');\n\n\/\/ \u7d50\u679c\u306e\u6d3b\u7528\nforeach ($adminUsers as $user) {\n    echo \"\u7ba1\u7406\u8005: \" . $user-&gt;name . \"\\n\";\n}\n<\/pre>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u30c6\u30af\u30cb\u30c3\u30af\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u8907\u96d1\u306aJSON\u30c7\u30fc\u30bf\u69cb\u9020\u3092\u52b9\u7387\u7684\u306b\u51e6\u7406\u3067\u304d\u307e\u3059\u3002\u7279\u306b\u3001\u5927\u898f\u6a21\u306a\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3084\u8907\u96d1\u306aAPI\u30ec\u30b9\u30dd\u30f3\u30b9\u3092\u6271\u3046\u5834\u5408\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u5b9f\u969b\u306e\u958b\u767a\u3067\u306f\u3001\u6b63\u78ba\u6027\u3001\u53ef\u8aad\u6027\u3001\u4fdd\u5b88\u6027\u306e\u30d0\u30e9\u30f3\u30b9\u3092\u8003\u616e\u3057\u306a\u304c\u3089\u3001\u6700\u9069\u306a\u624b\u6cd5\u3092\u9078\u629e\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002\u307e\u305f\u3001\u51e6\u7406\u3059\u308b\u30c7\u30fc\u30bf\u306e\u91cf\u3068\u69cb\u9020\u306b\u5fdc\u3058\u3066\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u610f\u8b58\u3057\u305f\u5b9f\u88c5\u3092\u5fc3\u304c\u3051\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-23\">7. json_encode\u3068\u306e\u9023\u643a\uff1aJSON\u30c7\u30fc\u30bf\u306e\u53cc\u65b9\u5411\u51e6\u7406<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-24\">PHP\u914d\u5217\/\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304b\u3089JSON\u3078\u3001\u305d\u3057\u3066JSON\u304b\u3089PHP\u914d\u5217\/\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3078\u306e\u5909\u63db\u30d5\u30ed\u30fc<\/h3>\n\n\n\n<p><code>json_decode<\/code>\u3068<code>json_encode<\/code>\u306f\u3001PHP\u30c7\u30fc\u30bf\u3068JSON\u5f62\u5f0f\u306e\u9593\u306e\u53cc\u65b9\u5411\u5909\u63db\u3092\u884c\u3046\u76f8\u88dc\u7684\u306a\u95a2\u6570\u3067\u3059\u3002\u3053\u308c\u3089\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u30c7\u30fc\u30bf\u306e\u4fdd\u5b58\u3001\u8ee2\u9001\u3001\u5909\u63db\u306a\u3069\u69d8\u3005\u306a\u51e6\u7406\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>\u57fa\u672c\u7684\u306a\u53cc\u65b9\u5411\u5909\u63db\u306e\u4f8b\uff1a<\/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=\"\">&lt;?php\n\/\/ PHP\u306e\u914d\u5217\u30c7\u30fc\u30bf\n$phpArray = [\n    'user' =&gt; [\n        'id' =&gt; 123,\n        'name' =&gt; '\u5c71\u7530\u592a\u90ce',\n        'email' =&gt; 'yamada@example.com',\n        'roles' =&gt; ['editor', 'admin'],\n        'active' =&gt; true\n    ],\n    'settings' =&gt; [\n        'notifications' =&gt; true,\n        'theme' =&gt; 'dark'\n    ]\n];\n\n\/\/ PHP\u914d\u5217 \u2192 JSON\u6587\u5b57\u5217\uff08\u30a8\u30f3\u30b3\u30fc\u30c9\uff09\n$jsonString = json_encode($phpArray, JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE);\necho \"JSON\u6587\u5b57\u5217:\\n$jsonString\\n\\n\";\n\n\/\/ JSON\u6587\u5b57\u5217 \u2192 PHP\u914d\u5217\uff08\u30c7\u30b3\u30fc\u30c9\uff09\n$decodedArray = json_decode($jsonString, true);\n\n\/\/ \u5143\u306e\u30c7\u30fc\u30bf\u3068\u4e00\u81f4\u3059\u308b\u3053\u3068\u3092\u78ba\u8a8d\nvar_dump($phpArray === $decodedArray); \/\/ bool(true)\n<\/pre>\n\n\n\n<p><strong>json_encode\u306e\u4e3b\u8981\u306a\u30aa\u30d7\u30b7\u30e7\u30f3\u30d5\u30e9\u30b0\uff1a<\/strong><\/p>\n\n\n<div id=\"id-a5797f11-10cc-4dbc-a8c6-4a678b585d3c\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u30d5\u30e9\u30b0<\/th><th>\u8aac\u660e<\/th><th>\u7528\u9014\u4f8b<\/th><\/tr><\/thead><tbody><tr><td>JSON_PRETTY_PRINT<\/td><td>\u6574\u5f62\u3055\u308c\u305fJSON\u51fa\u529b<\/td><td>\u30c7\u30d0\u30c3\u30b0\u3001\u4eba\u9593\u304c\u8aad\u3080\u305f\u3081\u306eJSON<\/td><\/tr><tr><td>JSON_UNESCAPED_UNICODE<\/td><td>Unicode\u6587\u5b57\u3092\u30a8\u30b9\u30b1\u30fc\u30d7\u3057\u306a\u3044<\/td><td>\u65e5\u672c\u8a9e\u306a\u3069\u306e\u591a\u8a00\u8a9e\u5bfe\u5fdc<\/td><\/tr><tr><td>JSON_UNESCAPED_SLASHES<\/td><td>\u30b9\u30e9\u30c3\u30b7\u30e5(\/)\u3092\u30a8\u30b9\u30b1\u30fc\u30d7\u3057\u306a\u3044<\/td><td>URL\u3092\u542b\u3080\u30c7\u30fc\u30bf\u306e\u53ef\u8aad\u6027\u5411\u4e0a<\/td><\/tr><tr><td>JSON_NUMERIC_CHECK<\/td><td>\u6570\u5024\u6587\u5b57\u5217\u3092\u6570\u5024\u306b\u5909\u63db<\/td><td>\u30d5\u30a9\u30fc\u30e0\u5165\u529b\u306a\u3069\u6587\u5b57\u5217\u3067\u53d6\u5f97\u3057\u305f\u6570\u5024\u306e\u51e6\u7406<\/td><\/tr><tr><td>JSON_FORCE_OBJECT<\/td><td>\u7a7a\u306e\u914d\u5217\u3092\u7a7a\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3068\u3057\u3066\u6271\u3046<\/td><td>JavaScript\u5074\u3067\u306e\u4e92\u63db\u6027\u5bfe\u5fdc<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<p><strong>\u53cc\u65b9\u5411\u51e6\u7406\u3067\u306e\u6ce8\u610f\u70b9\uff1a<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>PHP\u306e\u914d\u5217\u3068\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u533a\u5225<\/li>\n\n\n\n<li>\u6570\u5024\u30ad\u30fc\u306e\u6271\u3044<\/li>\n\n\n\n<li>UTF-8\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u306e\u78ba\u4fdd<\/li>\n\n\n\n<li>PHP\u306e\u7279\u6b8a\u578b\uff08\u30ea\u30bd\u30fc\u30b9\u3001\u30af\u30ed\u30fc\u30b8\u30e3\u306a\u3069\uff09\u306f\u30b7\u30ea\u30a2\u30e9\u30a4\u30ba\u4e0d\u53ef<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-25\">\u30c7\u30fc\u30bf\u306e\u6c38\u7d9a\u5316\u3068\u30ad\u30e3\u30c3\u30b7\u30e5\u306b\u304a\u3051\u308bJSON\u6d3b\u7528\u8853<\/h3>\n\n\n\n<p>JSON\u306f\u5358\u7d14\u306a\u30c6\u30ad\u30b9\u30c8\u30d9\u30fc\u30b9\u306e\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3067\u3042\u308b\u305f\u3081\u3001\u3055\u307e\u3056\u307e\u306a\u65b9\u6cd5\u3067\u30c7\u30fc\u30bf\u3092\u6c38\u7d9a\u5316\u3067\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u4e3b\u306a\u30a2\u30d7\u30ed\u30fc\u30c1\u3092\u793a\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<p><strong>1. \u30d5\u30a1\u30a4\u30eb\u30d9\u30fc\u30b9\u306e\u6c38\u7d9a\u5316\uff1a<\/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=\"\">&lt;?php\n\/**\n * JSON\u30d5\u30a1\u30a4\u30eb\u30d9\u30fc\u30b9\u306e\u30b7\u30f3\u30d7\u30eb\u306a\u30c7\u30fc\u30bf\u30b9\u30c8\u30a2\n *\/\nclass JsonStore {\n    private $filePath;\n    \n    public function __construct($filePath) {\n        $this-&gt;filePath = $filePath;\n    }\n    \n    \/**\n     * \u30c7\u30fc\u30bf\u3092JSON\u30d5\u30a1\u30a4\u30eb\u306b\u4fdd\u5b58\n     *\/\n    public function save($data) {\n        $json = json_encode($data, JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE);\n        if ($json === false) {\n            throw new Exception(\"JSON\u30a8\u30f3\u30b3\u30fc\u30c9\u30a8\u30e9\u30fc: \" . json_last_error_msg());\n        }\n        \n        $result = file_put_contents($this-&gt;filePath, $json, LOCK_EX);\n        if ($result === false) {\n            throw new Exception(\"\u30d5\u30a1\u30a4\u30eb\u66f8\u304d\u8fbc\u307f\u30a8\u30e9\u30fc\");\n        }\n        \n        return true;\n    }\n    \n    \/**\n     * JSON\u30d5\u30a1\u30a4\u30eb\u304b\u3089\u30c7\u30fc\u30bf\u3092\u8aad\u307f\u8fbc\u307f\n     *\/\n    public function load($associative = true) {\n        if (!file_exists($this-&gt;filePath)) {\n            return null;\n        }\n        \n        $json = file_get_contents($this-&gt;filePath);\n        if ($json === false) {\n            throw new Exception(\"\u30d5\u30a1\u30a4\u30eb\u8aad\u307f\u8fbc\u307f\u30a8\u30e9\u30fc\");\n        }\n        \n        $data = json_decode($json, $associative);\n        if ($data === null &amp;&amp; json_last_error() !== JSON_ERROR_NONE) {\n            throw new Exception(\"JSON\u30c7\u30b3\u30fc\u30c9\u30a8\u30e9\u30fc: \" . json_last_error_msg());\n        }\n        \n        return $data;\n    }\n}\n\n\/\/ \u4f7f\u7528\u4f8b\n$store = new JsonStore('user_settings.json');\n\n\/\/ \u30c7\u30fc\u30bf\u4fdd\u5b58\n$userSettings = [\n    'userId' =&gt; 123,\n    'preferences' =&gt; [\n        'darkMode' =&gt; true,\n        'fontSize' =&gt; 14\n    ]\n];\n$store-&gt;save($userSettings);\n\n\/\/ \u30c7\u30fc\u30bf\u8aad\u307f\u8fbc\u307f\n$loadedSettings = $store-&gt;load();\n<\/pre>\n\n\n\n<p><strong>2. \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3067\u306eJSON\u6d3b\u7528\uff1a<\/strong><\/p>\n\n\n\n<p>MySQL\u3084PostgreSQL\u306a\u3069\u306e\u73fe\u4ee3\u7684\u306a\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306fJSON\u578b\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u304a\u308a\u3001JSON\u30c7\u30fc\u30bf\u3092\u52b9\u7387\u7684\u306b\u4fdd\u5b58\u30fb\u691c\u7d22\u3067\u304d\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;?php\n\/\/ PDO\u3092\u4f7f\u7528\u3057\u305fJSON\u578b\u30ab\u30e9\u30e0\u306e\u64cd\u4f5c\u4f8b\n$pdo = new PDO('mysql:host=localhost;dbname=myapp', 'username', 'password');\n$pdo-&gt;setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);\n\n\/\/ \u30e6\u30fc\u30b6\u30fc\u8a2d\u5b9a\u3092JSON\u3068\u3057\u3066\u4fdd\u5b58\nfunction saveUserSettings($userId, $settings) {\n    global $pdo;\n    \n    $jsonSettings = json_encode($settings, JSON_UNESCAPED_UNICODE);\n    \n    $stmt = $pdo-&gt;prepare(\n        \"INSERT INTO users (id, settings) VALUES (:id, :settings) \n         ON DUPLICATE KEY UPDATE settings = :settings\"\n    );\n    $stmt-&gt;bindParam(':id', $userId, PDO::PARAM_INT);\n    $stmt-&gt;bindParam(':settings', $jsonSettings, PDO::PARAM_STR);\n    return $stmt-&gt;execute();\n}\n\n\/\/ \u30e6\u30fc\u30b6\u30fc\u8a2d\u5b9a\u3092\u8aad\u307f\u8fbc\u307f\nfunction getUserSettings($userId) {\n    global $pdo;\n    \n    $stmt = $pdo-&gt;prepare(\"SELECT settings FROM users WHERE id = :id\");\n    $stmt-&gt;bindParam(':id', $userId, PDO::PARAM_INT);\n    $stmt-&gt;execute();\n    \n    $row = $stmt-&gt;fetch(PDO::FETCH_ASSOC);\n    if (!$row) {\n        return null;\n    }\n    \n    return json_decode($row['settings'], true);\n}\n<\/pre>\n\n\n\n<p><strong>3. \u30ad\u30e3\u30c3\u30b7\u30e5\u30b7\u30b9\u30c6\u30e0\u3067\u306e\u6d3b\u7528\uff1a<\/strong><\/p>\n\n\n\n<p>Redis\u306a\u3069\u306e\u30ad\u30fc\u30fb\u30d0\u30ea\u30e5\u30fc\u30b9\u30c8\u30a2\u3067\u306eJSON\u6d3b\u7528\u4f8b\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;?php\n\/\/ Redis\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f7f\u7528\n$redis = new Redis();\n$redis-&gt;connect('127.0.0.1', 6379);\n\n\/\/ \u30c7\u30fc\u30bf\u3092JSON\u3068\u3057\u3066\u30ad\u30e3\u30c3\u30b7\u30e5\nfunction cacheData($key, $data, $ttl = 3600) {\n    global $redis;\n    \n    $jsonData = json_encode($data, JSON_UNESCAPED_UNICODE);\n    return $redis-&gt;setex($key, $ttl, $jsonData);\n}\n\n\/\/ \u30ad\u30e3\u30c3\u30b7\u30e5\u304b\u3089\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\nfunction getCachedData($key) {\n    global $redis;\n    \n    $jsonData = $redis-&gt;get($key);\n    if (!$jsonData) {\n        return null;\n    }\n    \n    return json_decode($jsonData, true);\n}\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-26\">\u30a8\u30f3\u30b3\u30fc\u30c9\u3068\u30c7\u30b3\u30fc\u30c9\u3092\u7d44\u307f\u5408\u308f\u305b\u305f\u5b9f\u8df5\u7684\u306a\u30b3\u30fc\u30c9\u4f8b<\/h3>\n\n\n\n<p>\u6700\u5f8c\u306b\u3001<code>json_encode<\/code>\u3068<code>json_decode<\/code>\u3092\u7d44\u307f\u5408\u308f\u305b\u305f\u5b9f\u8df5\u7684\u306a\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u3068\u3057\u3066\u3001PHP\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30b7\u30ea\u30a2\u30e9\u30a4\u30ba\/\u30c7\u30b7\u30ea\u30a2\u30e9\u30a4\u30ba\u306e\u4f8b\u3092\u898b\u3066\u307f\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=\"\">&lt;?php\n\/**\n * JSON\u30b7\u30ea\u30a2\u30e9\u30a4\u30ba\u53ef\u80fd\u306a\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u57fa\u5e95\u30af\u30e9\u30b9\n *\/\nabstract class JsonSerializable implements \\JsonSerializable {\n    \/**\n     * \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092JSON\u6587\u5b57\u5217\u306b\u5909\u63db\n     *\/\n    public function toJson($options = 0) {\n        return json_encode($this, $options);\n    }\n    \n    \/**\n     * JSON\u6587\u5b57\u5217\u304b\u3089\u5bfe\u8c61\u30af\u30e9\u30b9\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\n     *\/\n    public static function fromJson($jsonString) {\n        $data = json_decode($jsonString, true);\n        if ($data === null &amp;&amp; json_last_error() !== JSON_ERROR_NONE) {\n            throw new \\Exception(\"JSON\u30c7\u30b3\u30fc\u30c9\u30a8\u30e9\u30fc: \" . json_last_error_msg());\n        }\n        \n        return static::fromArray($data);\n    }\n    \n    \/**\n     * \u914d\u5217\u304b\u3089\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u69cb\u7bc9\uff08\u30b5\u30d6\u30af\u30e9\u30b9\u3067\u5b9f\u88c5\uff09\n     *\/\n    abstract public static function fromArray(array $data);\n}\n\n\/**\n * \u30e6\u30fc\u30b6\u30fc\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u30af\u30e9\u30b9\u306e\u4f8b\n *\/\nclass UserProfile extends JsonSerializable {\n    private $id;\n    private $name;\n    private $email;\n    private $preferences;\n    private $createdAt;\n    \n    public function __construct($id, $name, $email, array $preferences = []) {\n        $this-&gt;id = $id;\n        $this-&gt;name = $name;\n        $this-&gt;email = $email;\n        $this-&gt;preferences = $preferences;\n        $this-&gt;createdAt = new DateTime();\n    }\n    \n    \/\/ \u30b2\u30c3\u30bf\u30fc\u3068\u30bb\u30c3\u30bf\u30fc\uff08\u7701\u7565\uff09...\n    \n    \/**\n     * JsonSerializable\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u5b9f\u88c5\n     *\/\n    public function jsonSerialize() {\n        return [\n            'id' =&gt; $this-&gt;id,\n            'name' =&gt; $this-&gt;name,\n            'email' =&gt; $this-&gt;email,\n            'preferences' =&gt; $this-&gt;preferences,\n            'created_at' =&gt; $this-&gt;createdAt-&gt;format('Y-m-d H:i:s')\n        ];\n    }\n    \n    \/**\n     * \u914d\u5217\u304b\u3089\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u69cb\u7bc9\n     *\/\n    public static function fromArray(array $data) {\n        $user = new self(\n            $data['id'],\n            $data['name'],\n            $data['email'],\n            $data['preferences'] ?? []\n        );\n        \n        \/\/ \u4f5c\u6210\u65e5\u6642\u306e\u5fa9\u5143\n        if (isset($data['created_at'])) {\n            $createdAt = new DateTime($data['created_at']);\n            \/\/ setCreatedAt\u30e1\u30bd\u30c3\u30c9\u304c\u3042\u308b\u3068\u4eee\u5b9a\n            $user-&gt;setCreatedAt($createdAt);\n        }\n        \n        return $user;\n    }\n}\n\n\/\/ \u4f7f\u7528\u4f8b\n$user = new UserProfile(123, '\u7530\u4e2d\u5065\u592a', 'tanaka@example.com', [\n    'notifications' =&gt; true,\n    'theme' =&gt; 'light'\n]);\n\n\/\/ \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092JSON\u306b\u5909\u63db\n$jsonString = $user-&gt;toJson(JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE);\necho \"\u30b7\u30ea\u30a2\u30e9\u30a4\u30ba\u3055\u308c\u305f\u30e6\u30fc\u30b6\u30fc:\\n$jsonString\\n\\n\";\n\n\/\/ JSON\u304b\u3089\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u5fa9\u5143\n$restoredUser = UserProfile::fromJson($jsonString);\necho \"\u5fa9\u5143\u3055\u308c\u305f\u30e6\u30fc\u30b6\u30fc\u540d: \" . $restoredUser-&gt;getName() . \"\\n\";\n<\/pre>\n\n\n\n<p>\u3053\u306e\u30a2\u30d7\u30ed\u30fc\u30c1\u306f\u3001\u5358\u7d14\u306a\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u4fdd\u5b58\u3084API\u30c8\u30e9\u30f3\u30b9\u30dd\u30fc\u30c8\u3092\u8d85\u3048\u3066\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5185\u306e\u8907\u96d1\u306a\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u30b0\u30e9\u30d5\u306e\u6c38\u7d9a\u5316\u3084\u5fa9\u5143\u306b\u6d3b\u7528\u3067\u304d\u307e\u3059\u3002\u7279\u306b\u3001\u30e2\u30c7\u30eb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092JSON\u3068\u3057\u3066\u52b9\u7387\u7684\u306b\u30b7\u30ea\u30a2\u30e9\u30a4\u30ba\u3057\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u5fa9\u5143\u3059\u308b\u30d1\u30bf\u30fc\u30f3\u306f\u3001\u73fe\u4ee3\u306ePHP\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u958b\u767a\u3067\u306f\u975e\u5e38\u306b\u4e00\u822c\u7684\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u305f\u3060\u3057\u3001\u3053\u306e\u624b\u6cd5\u3092\u4f7f\u7528\u3059\u308b\u969b\u306f\u4ee5\u4e0b\u306e\u70b9\u306b\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u30d7\u30ed\u30d1\u30c6\u30a3\u306e\u30a2\u30af\u30bb\u30b9\u5236\u5fa1<\/li>\n\n\n\n<li>\u5faa\u74b0\u53c2\u7167\u306e\u51e6\u7406<\/li>\n\n\n\n<li>\u65e5\u4ed8\u3084\u7279\u6b8a\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u9069\u5207\u306a\u5909\u63db<\/li>\n\n\n\n<li>\u30c7\u30fc\u30bf\u306e\u691c\u8a3c\u3068\u30b5\u30cb\u30bf\u30a4\u30ba<\/li>\n<\/ol>\n\n\n\n<p><code>json_encode<\/code>\u3068<code>json_decode<\/code>\u3092\u9069\u5207\u306b\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001PHP\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u30c7\u30fc\u30bf\u51e6\u7406\u306e\u5e45\u304c\u5927\u304d\u304f\u5e83\u304c\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-27\">\u307e\u3068\u3081\uff1aPHP json_decode\u3092\u4f7f\u3044\u3053\u306a\u3059\u305f\u3081\u306e\u30dd\u30a4\u30f3\u30c8<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-28\">\u672c\u8a18\u4e8b\u3067\u89e3\u8aac\u3057\u305f7\u3064\u306e\u91cd\u8981\u30dd\u30a4\u30f3\u30c8\u306e\u5fa9\u7fd2<\/h3>\n\n\n\n<p>\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001PHP\u306e<code>json_decode<\/code>\u95a2\u6570\u306b\u3064\u3044\u3066\u3001\u57fa\u672c\u304b\u3089\u5fdc\u7528\u307e\u30677\u3064\u306e\u91cd\u8981\u306a\u30dd\u30a4\u30f3\u30c8\u3092\u8a73\u3057\u304f\u89e3\u8aac\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u57fa\u672c\u7684\u306a\u6a5f\u80fd\u3068\u5f79\u5272<\/strong>: <code>json_decode<\/code>\u306fJSON\u5f62\u5f0f\u306e\u6587\u5b57\u5217\u3092PHP\u306e\u30c7\u30fc\u30bf\u69cb\u9020\uff08\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u307e\u305f\u306f\u914d\u5217\uff09\u306b\u5909\u63db\u3059\u308b\u57fa\u672c\u95a2\u6570\u3067\u3042\u308a\u3001\u73fe\u4ee3\u306eWeb\u958b\u767a\u306b\u304a\u3044\u3066\u5fc5\u9808\u306e\u30c4\u30fc\u30eb\u3067\u3059\u3002<\/li>\n\n\n\n<li><strong>\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\u3068\u30b7\u30f3\u30bf\u30c3\u30af\u30b9<\/strong>: \u95a2\u6570\u306e\u57fa\u672c\u69cb\u6587\u3068\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u5f62\u5f0f\u3068\u914d\u5217\u5f62\u5f0f\u306e\u9055\u3044\u3084\u305d\u306e\u4f7f\u3044\u5206\u3051\u306b\u3064\u3044\u3066\u7406\u89e3\u3059\u308b\u3053\u3068\u3067\u3001\u9069\u5207\u306bJSON\u30c7\u30fc\u30bf\u3092\u51e6\u7406\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>\u91cd\u8981\u306a\u30aa\u30d7\u30b7\u30e7\u30f3\u30d1\u30e9\u30e1\u30fc\u30bf<\/strong>: \u9023\u60f3\u914d\u5217\u3078\u306e\u5909\u63db\uff08<code>$assoc<\/code>\uff09\u3001\u30cd\u30b9\u30c8\u306e\u6df1\u3055\u5236\u9650\uff08<code>$depth<\/code>\uff09\u3001\u30a8\u30e9\u30fc\u51e6\u7406\u30d5\u30e9\u30b0\uff08<code>$flags<\/code>\uff09\u306a\u3069\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u9069\u5207\u306b\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u67d4\u8edf\u306aJSON\u51e6\u7406\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>\u30a8\u30e9\u30fc\u51e6\u7406\u3068\u5bfe\u7b56<\/strong>: <code>json_last_error()<\/code>\u3084<code>json_last_error_message()<\/code>\u3092\u7528\u3044\u305f\u30a8\u30e9\u30fc\u51e6\u7406\u3001\u3042\u308b\u3044\u306fPHP 7.3\u4ee5\u964d\u306e\u4f8b\u5916\u30d9\u30fc\u30b9\u306e\u30a8\u30e9\u30fc\u51e6\u7406\u306b\u3088\u3063\u3066\u3001\u5805\u7262\u306aJSON\u30c7\u30fc\u30bf\u51e6\u7406\u304c\u5b9f\u73fe\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3068\u6700\u9069\u5316<\/strong>: \u5927\u898f\u6a21\u30c7\u30fc\u30bf\u51e6\u7406\u6642\u306e\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u6700\u9069\u5316\u3084\u51e6\u7406\u901f\u5ea6\u5411\u4e0a\u306e\u305f\u3081\u306e\u30c6\u30af\u30cb\u30c3\u30af\u3092\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u52b9\u7387\u7684\u306a\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u958b\u767a\u304c\u53ef\u80fd\u3067\u3059\u3002<\/li>\n\n\n\n<li><strong>\u5b9f\u8df5\u7684\u306a\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9<\/strong>: API\u9023\u643a\u3001\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u7ba1\u7406\u3001\u8907\u96d1\u306a\u30cd\u30b9\u30c8\u30c7\u30fc\u30bf\u306e\u51e6\u7406\u306a\u3069\u3001\u5b9f\u969b\u306e\u958b\u767a\u30b7\u30fc\u30f3\u306b\u304a\u3051\u308b<code>json_decode<\/code>\u306e\u6d3b\u7528\u65b9\u6cd5\u3092\u7fd2\u5f97\u3057\u307e\u3057\u305f\u3002<\/li>\n\n\n\n<li><strong>json_encode\u3068\u306e\u9023\u643a<\/strong>: JSON\u3068PHP\u30c7\u30fc\u30bf\u306e\u53cc\u65b9\u5411\u5909\u63db\u306b\u3088\u308a\u3001\u30c7\u30fc\u30bf\u306e\u6c38\u7d9a\u5316\u3084\u30b7\u30ea\u30a2\u30e9\u30a4\u30ba\u3001\u30ad\u30e3\u30c3\u30b7\u30e5\u306a\u3069\u306e\u9ad8\u5ea6\u306a\u51e6\u7406\u304c\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u30dd\u30a4\u30f3\u30c8\u3092\u62bc\u3055\u3048\u308b\u3053\u3068\u3067\u3001JSON\u30c7\u30fc\u30bf\u3092\u6271\u3046PHP\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u54c1\u8cea\u3068\u52b9\u7387\u3092\u5927\u5e45\u306b\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-29\">\u3088\u308a\u9ad8\u5ea6\u306aJSON\u30c7\u30fc\u30bf\u51e6\u7406\u3078\u306e\u767a\u5c55\u7684\u306a\u5b66\u7fd2\u30ea\u30bd\u30fc\u30b9<\/h3>\n\n\n\n<p><code>json_decode<\/code>\u306e\u57fa\u672c\u3092\u7406\u89e3\u3057\u305f\u5f8c\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u767a\u5c55\u7684\u306a\u30c8\u30d4\u30c3\u30af\u3092\u5b66\u3076\u3053\u3068\u3092\u304a\u52e7\u3081\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>JSON\u30b9\u30ad\u30fc\u30de\u3068\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3<\/strong>:\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/json-schema.org\/\">JSON Schema<\/a> \u2013 JSON\u30c7\u30fc\u30bf\u306e\u69cb\u9020\u3092\u5b9a\u7fa9\u3057\u691c\u8a3c\u3059\u308b\u305f\u3081\u306e\u6a19\u6e96<\/li>\n\n\n\n<li><a href=\"https:\/\/github.com\/justinrainbow\/json-schema\">justinrainbow\/json-schema<\/a> \u2013 PHP\u3067\u306eJSON\u30b9\u30ad\u30fc\u30de\u691c\u8a3c\u30e9\u30a4\u30d6\u30e9\u30ea<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u9ad8\u5ea6\u306aJSON\u30af\u30a8\u30ea\u8a00\u8a9e<\/strong>:\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/goessner.net\/articles\/JsonPath\/\">JSONPath<\/a> \u2013 JSON\u30c7\u30fc\u30bf\u304b\u3089\u7279\u5b9a\u306e\u8981\u7d20\u3092\u62bd\u51fa\u3059\u308bXPath\u30e9\u30a4\u30af\u306a\u8a00\u8a9e<\/li>\n\n\n\n<li><a href=\"https:\/\/jmespath.org\/\">JMESPath<\/a> \u2013 \u3088\u308a\u6d17\u7df4\u3055\u308c\u305fJSON\u30af\u30a8\u30ea\u8a00\u8a9e<\/li>\n\n\n\n<li><a href=\"https:\/\/symfony.com\/doc\/current\/components\/property_access.html\">symfony\/property-access<\/a> \u2013 \u8907\u96d1\u306a\u30c7\u30fc\u30bf\u69cb\u9020\u3078\u306e\u30a2\u30af\u30bb\u30b9\u3092\u7c21\u7d20\u5316<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u30b9\u30c8\u30ea\u30fc\u30df\u30f3\u30b0JSON\u30d1\u30fc\u30b5\u30fc<\/strong>:\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/github.com\/salsify\/jsonstreamingparser\">salsify\/jsonstreamingparser<\/a> \u2013 \u5927\u898f\u6a21JSON\u30d5\u30a1\u30a4\u30eb\u306e\u52b9\u7387\u7684\u306a\u51e6\u7406<\/li>\n\n\n\n<li><a href=\"https:\/\/github.com\/halaxa\/json-machine\">halaxa\/json-machine<\/a> \u2013 \u30e1\u30e2\u30ea\u52b9\u7387\u306e\u826f\u3044\u30a4\u30c6\u30ec\u30fc\u30c6\u30a3\u30d6\u306aJSON\u30d1\u30fc\u30b5\u30fc<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>JSON\u95a2\u9023\u306ePHP\u30a8\u30af\u30b9\u30c6\u30f3\u30b7\u30e7\u30f3<\/strong>:\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/pecl.php.net\/package\/jq\">PECL jq<\/a> \u2013 \u5f37\u529b\u306aJSON\u30d7\u30ed\u30bb\u30c3\u30b5\u300cjq\u300d\u306ePHP\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0<\/li>\n\n\n\n<li><a href=\"https:\/\/pecl.php.net\/package\/jsonc\">PECL jsonc<\/a> \u2013 JSON\u30de\u30cb\u30d4\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\u5411\u3051\u306e\u9ad8\u901fC\u62e1\u5f35<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u30c4\u30fc\u30eb\u3084\u6280\u8853\u3092\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u8907\u96d1\u306aJSON\u30c7\u30fc\u30bf\u51e6\u7406\u30bf\u30b9\u30af\u306b\u5bfe\u5fdc\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-30\">\u5b9f\u52d9\u3067\u5373\u6d3b\u7528\u3067\u304d\u308bjson_decode\u306e\u5b9f\u8df5\u30c6\u30af\u30cb\u30c3\u30af<\/h3>\n\n\n\n<p>\u6700\u5f8c\u306b\u3001\u5b9f\u52d9\u3067\u3059\u3050\u306b\u6d3b\u7528\u3067\u304d\u308b<code>json_decode<\/code>\u306e\u5b9f\u8df5\u30c6\u30af\u30cb\u30c3\u30af\u3092\u3044\u304f\u3064\u304b\u7d39\u4ecb\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u5805\u7262\u306aJSON\u30c7\u30b3\u30fc\u30c9\u95a2\u6570<\/strong>: <code>function safeJsonDecode($json, $assoc = false) { $data = json_decode($json, $assoc); if (json_last_error() !== JSON_ERROR_NONE) { \/\/ \u30a8\u30e9\u30fc\u30ed\u30b0\u8a18\u9332\u3084\u30c7\u30d0\u30c3\u30b0\u60c5\u5831\u306e\u51fa\u529b error_log('JSON\u30c7\u30b3\u30fc\u30c9\u30a8\u30e9\u30fc: ' . json_last_error_msg()); \/\/ \u30a8\u30e9\u30fc\u6642\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u3092\u8fd4\u3059 return $assoc ? [] : new stdClass(); } return $data; }<\/code><\/li>\n\n\n\n<li><strong>JSON\u30c7\u30fc\u30bf\u691c\u8a3c\u306e\u30c1\u30a7\u30c3\u30af\u30ea\u30b9\u30c8<\/strong>:\n<ul class=\"wp-block-list\">\n<li>\u30c7\u30b3\u30fc\u30c9\u524d\u306bJSON\u6587\u5b57\u5217\u304c\u7a7a\u3067\u306a\u3044\u3053\u3068\u3092\u78ba\u8a8d<\/li>\n\n\n\n<li>\u671f\u5f85\u3059\u308b\u30ad\u30fc\u304c\u5b58\u5728\u3059\u308b\u304b\u3092\u30c1\u30a7\u30c3\u30af\uff08<code>isset()<\/code>\u3084<code>array_key_exists()<\/code>\u3092\u6d3b\u7528\uff09<\/li>\n\n\n\n<li>\u5024\u306e\u578b\u3092\u691c\u8a3c\uff08<code>is_array()<\/code>\u3001<code>is_object()<\/code>\u3001<code>is_string()<\/code>\u306a\u3069\uff09<\/li>\n\n\n\n<li>\u5fc5\u9808\u30d5\u30a3\u30fc\u30eb\u30c9\u304c\u5b58\u5728\u3057\u9069\u5207\u306a\u5024\u3092\u6301\u3064\u3053\u3068\u3092\u78ba\u8a8d<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u30c7\u30d0\u30c3\u30b0\u3068\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0<\/strong>:\n<ul class=\"wp-block-list\">\n<li>\u554f\u984c\u306e\u3042\u308bJSON\u3092\u53ef\u8996\u5316\uff08<code>echo json_encode(json_decode($json), JSON_PRETTY_PRINT)<\/code>\uff09<\/li>\n\n\n\n<li>\u30aa\u30f3\u30e9\u30a4\u30f3\u306eJSON\u30d0\u30ea\u30c7\u30fc\u30bf\u30c4\u30fc\u30eb\u3092\u6d3b\u7528\uff08<a href=\"https:\/\/jsonlint.com\/\">JSONLint<\/a>\u306a\u3069\uff09<\/li>\n\n\n\n<li>\u30a8\u30e9\u30fc\u767a\u751f\u6642\u306e\u5143\u306eJSON\u6587\u5b57\u5217\u3092\u4fdd\u5b58\u3057\u3066\u5f8c\u3067\u5206\u6790<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u76e3\u8996<\/strong>: <code>$startTime = microtime(true); $memory_before = memory_get_usage(); \/\/ JSON\u30c7\u30b3\u30fc\u30c9\u51e6\u7406 $data = json_decode($largeJson, true); $memory_after = memory_get_usage(); $endTime = microtime(true); $memoryUsed = ($memory_after - $memory_before) \/ 1024 \/ 1024; \/\/ MB\u5358\u4f4d $timeTaken = $endTime - $startTime; echo \"\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf: {$memoryUsed} MB\\n\"; echo \"\u51e6\u7406\u6642\u9593: {$timeTaken} \u79d2\\n\";<\/code><\/li>\n\n\n\n<li><strong>\u30e2\u30c0\u30f3PHP\u306e\u6d3b\u7528<\/strong>:\n<ul class=\"wp-block-list\">\n<li>PHP 7.3\u4ee5\u964d\u3067\u306f<code>JSON_THROW_ON_ERROR<\/code>\u30d5\u30e9\u30b0\u3092\u4f7f\u3063\u305f\u4f8b\u5916\u30d9\u30fc\u30b9\u306e\u30a8\u30e9\u30fc\u51e6\u7406<\/li>\n\n\n\n<li>PHP 8.0\u306e\u540d\u524d\u4ed8\u304d\u5f15\u6570\u3092\u4f7f\u3063\u305f\u8aad\u307f\u3084\u3059\u3044\u30b3\u30fc\u30c9\uff1a <code>$data = json_decode( json: $jsonString, associative: true, flags: JSON_THROW_ON_ERROR);<\/code><\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u30c6\u30af\u30cb\u30c3\u30af\u3092\u65e5\u3005\u306e\u958b\u767a\u306b\u53d6\u308a\u5165\u308c\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u5805\u7262\u3067\u4fdd\u5b88\u6027\u306e\u9ad8\u3044\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u3053\u3068\u304c\u3067\u304d\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p>\u4eca\u56de\u306e\u8a18\u4e8b\u3067\u89e3\u8aac\u3057\u305f\u5185\u5bb9\u304c\u3001\u7686\u3055\u3093\u306ePHP\u958b\u767a\u306b\u304a\u3051\u308b<code>json_decode<\/code>\u306e\u6d3b\u7528\u306b\u5f79\u7acb\u3064\u3053\u3068\u3092\u9858\u3063\u3066\u3044\u307e\u3059\u3002JSON\u30c7\u30fc\u30bf\u51e6\u7406\u306b\u95a2\u3059\u308b\u57fa\u790e\u3092\u3057\u3063\u304b\u308a\u7406\u89e3\u3057\u3001\u3055\u3089\u306b\u9ad8\u5ea6\u306a\u30c6\u30af\u30cb\u30c3\u30af\u3082\u7fd2\u5f97\u3059\u308b\u3053\u3068\u3067\u3001\u73fe\u4ee3\u306eWeb\u958b\u767a\u306b\u304a\u3044\u3066\u3055\u3089\u306b\u6d3b\u8e8d\u3067\u304d\u308b\u30a8\u30f3\u30b8\u30cb\u30a2\u306b\u306a\u308c\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u73fe\u4ee3\u306eWeb\u958b\u767a\u306b\u304a\u3044\u3066\u3001JSON\u30c7\u30fc\u30bf\u306e\u51e6\u7406\u306f\u307b\u307c\u907f\u3051\u3066\u306f\u901a\u308c\u306a\u3044\u91cd\u8981\u306a\u30b9\u30ad\u30eb\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002REST API\u3068\u306e\u9023\u643a\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u8a2d\u5b9a\u306e\u7ba1\u7406\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u30b5\u30a4\u30c9\u3068\u306e\u30c7\u30fc\u30bf\u3084\u308a\u53d6\u308a\u306a\u3069\u3001JSON\u306f\u3055\u307e\u3056\u307e\u306a\u5834\u9762\u3067\u6d3b &#8230; <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12,63],"tags":[],"class_list":{"0":"post-3414","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-php","7":"category-php-syntax","8":"nothumb"},"_links":{"self":[{"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/3414","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=3414"}],"version-history":[{"count":2,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/3414\/revisions"}],"predecessor-version":[{"id":3416,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/3414\/revisions\/3416"}],"wp:attachment":[{"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3414"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3414"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3414"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}