{"id":3419,"date":"2025-03-24T08:46:15","date_gmt":"2025-03-23T23:46:15","guid":{"rendered":"https:\/\/dexall.co.jp\/articles\/?p=3419"},"modified":"2025-03-24T08:46:44","modified_gmt":"2025-03-23T23:46:44","slug":"%e3%80%90%e5%ae%8c%e5%85%a8%e8%a7%a3%e8%aa%ac%e3%80%91php%e9%80%a3%e6%83%b3%e9%85%8d%e5%88%97%e3%83%9e%e3%82%b9%e3%82%bf%e3%83%bc%e3%82%ac%e3%82%a4%e3%83%89-%e5%88%9d%e5%bf%83%e8%80%85%e3%81%8b","status":"publish","type":"post","link":"https:\/\/dexall.co.jp\/articles\/?p=3419","title":{"rendered":"\u3010\u5b8c\u5168\u89e3\u8aac\u3011PHP\u9023\u60f3\u914d\u5217\u30de\u30b9\u30bf\u30fc\u30ac\u30a4\u30c9 &#8211; \u521d\u5fc3\u8005\u304b\u3089\u4e0a\u7d1a\u8005\u307e\u3067\u4f7f\u3048\u308b7\u3064\u306e\u30c6\u30af\u30cb\u30c3\u30af"},"content":{"rendered":"\n<div class=\"toc\"><br \/>\n<b>Warning<\/b>:  Undefined array key \"is_admin\" in <b>\/home\/xs392991\/dexall.co.jp\/public_html\/articles\/wp-content\/themes\/sango-theme\/library\/gutenberg\/dist\/classes\/Toc.php<\/b> on line <b>116<\/b><br \/>\n<br \/>\n<b>Warning<\/b>:  Undefined array key \"is_category_top\" in <b>\/home\/xs392991\/dexall.co.jp\/public_html\/articles\/wp-content\/themes\/sango-theme\/library\/gutenberg\/dist\/classes\/Toc.php<\/b> on line <b>121<\/b><br \/>\n<br \/>\n<b>Warning<\/b>:  Undefined array key \"is_top\" in <b>\/home\/xs392991\/dexall.co.jp\/public_html\/articles\/wp-content\/themes\/sango-theme\/library\/gutenberg\/dist\/classes\/Toc.php<\/b> on line <b>128<\/b><br \/>\n    <div id=\"toc_container\" class=\"sgb-toc--bullets js-smooth-scroll\" data-dialog-title=\"\u76ee\u6b21\">\n      <p class=\"toc_title\">\u76ee\u6b21 <\/p>\n      <ul class=\"toc_list\">  <li class=\"first\">    <a href=\"#i-0\">\u30a4\u30f3\u30c8\u30ed\u30c0\u30af\u30b7\u30e7\u30f3<\/a>  <\/li>  <li>    <a href=\"#i-1\">PHP\u9023\u60f3\u914d\u5217\u306e\u57fa\u790e\u77e5\u8b58 \u2013 \u62bc\u3055\u3048\u3066\u304a\u304f\u3079\u304d\u57fa\u672c\u6982\u5ff5<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-2\">\u9023\u60f3\u914d\u5217\u3068\u306f\uff1f\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u914d\u5217\u3068\u306e\u6c7a\u5b9a\u7684\u306a\u9055\u3044<\/a>      <\/li>      <li>        <a href=\"#i-3\">\u9023\u60f3\u914d\u5217\u306e\u5ba3\u8a00\u3068\u521d\u671f\u5316 \u2013 \u30b7\u30f3\u30d7\u30eb\u3067\u78ba\u5b9f\u306a\u65b9\u6cd5<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-4\">\u30ad\u30fc\u3068\u5024\u306e\u30da\u30a2\u3092\u8ffd\u52a0\u30fb\u66f4\u65b0\u30fb\u524a\u9664\u3059\u308b\u6a19\u6e96\u7684\u306a\u65b9\u6cd5<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-5\">\u30c6\u30af\u30cb\u30c3\u30af1: \u9023\u60f3\u914d\u5217\u306e\u591a\u6b21\u5143\u5316 \u2013 \u8907\u96d1\u306a\u30c7\u30fc\u30bf\u69cb\u9020\u306e\u69cb\u7bc9\u65b9\u6cd5<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-6\">2\u6b21\u5143\u9023\u60f3\u914d\u5217\u3067\u52b9\u7387\u7684\u306b\u30c7\u30fc\u30bf\u3092\u6574\u7406\u3059\u308b\u65b9\u6cd5<\/a>      <\/li>      <li>        <a href=\"#i-7\">\u8907\u96d1\u306a\u30cd\u30b9\u30c8\u3092\u6301\u3064\u591a\u6b21\u5143\u914d\u5217\u306e\u4f5c\u6210\u3068\u30a2\u30af\u30bb\u30b9\u65b9\u6cd5<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-8\">JSON\u3068\u306e\u76f8\u4e92\u5909\u63db\u3067\u62e1\u5f35\u6027\u306e\u9ad8\u3044\u30c7\u30fc\u30bf\u69cb\u9020\u3092\u5b9f\u73fe\u3059\u308b<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-9\">\u30c6\u30af\u30cb\u30c3\u30af2: array_map\u3068array_filter\u3092\u6d3b\u7528\u3057\u305f\u9023\u60f3\u914d\u5217\u306e\u64cd\u4f5c<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-10\">array_map\u3067\u9023\u60f3\u914d\u5217\u306e\u5168\u8981\u7d20\u3092\u4e00\u62ec\u5909\u63db\u3059\u308b\u65b9\u6cd5<\/a>      <\/li>      <li>        <a href=\"#i-11\">array_filter\u3067\u6761\u4ef6\u306b\u5408\u3046\u8981\u7d20\u3060\u3051\u3092\u7c21\u5358\u306b\u62bd\u51fa\u3059\u308b<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-12\">\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\u3092\u4f7f\u3063\u305f\u9ad8\u5ea6\u306a\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u30c6\u30af\u30cb\u30c3\u30af<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-13\">\u30c6\u30af\u30cb\u30c3\u30af3: \u9023\u60f3\u914d\u5217\u306e\u30bd\u30fc\u30c8\u3068\u30b0\u30eb\u30fc\u30d7\u5316 \u2013 \u30c7\u30fc\u30bf\u3092\u6574\u7406\u3059\u308b\u5f37\u529b\u306a\u65b9\u6cd5<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-14\">\u5024\u30fb\u30ad\u30fc\u30fb\u30ab\u30b9\u30bf\u30e0\u6761\u4ef6\u306b\u3088\u308b\u30bd\u30fc\u30c8\u306e\u5b9f\u88c5\u65b9\u6cd5<\/a>      <\/li>      <li>        <a href=\"#i-15\">usort\u3068usort\u7cfb\u95a2\u6570\u3092\u4f7f\u7528\u3057\u305f\u30b1\u30fc\u30b9\u30b9\u30bf\u30c7\u30a3<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-16\">array_group\u3067\u30c7\u30fc\u30bf\u3092\u30ab\u30c6\u30b4\u30ea\u3054\u3068\u306b\u6574\u7406\u3059\u308b\u6280\u8853<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-17\">\u30c6\u30af\u30cb\u30c3\u30af4: \u30eb\u30fc\u30d7\u51e6\u7406\u306e\u6700\u9069\u5316 \u2013 \u9023\u60f3\u914d\u5217\u3092\u52b9\u7387\u7684\u306b\u51e6\u7406\u3059\u308b\u65b9\u6cd5<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-18\">foreach\u30eb\u30fc\u30d7\u306e\u6b63\u3057\u3044\u4f7f\u3044\u65b9\u3068\u53c2\u7167\u6e21\u3057\u306e\u6d3b\u7528\u6cd5<\/a>      <\/li>      <li>        <a href=\"#i-19\">\u30a4\u30c6\u30ec\u30fc\u30bf\u3092\u4f7f\u3063\u305f\u5927\u898f\u6a21\u914d\u5217\u306e\u7701\u30e1\u30e2\u30ea\u51e6\u7406<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-20\">\u30eb\u30fc\u30d7\u5185\u3067\u306e\u30ad\u30fc\u3068\u5024\u306e\u53d6\u308a\u6271\u3044\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-21\">\u30c6\u30af\u30cb\u30c3\u30af5: \u9023\u60f3\u914d\u5217\u3092\u4f7f\u3063\u305f\u30c7\u30fc\u30bf\u691c\u8a3c\u3068\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-22\">isset()\u3068empty()\u3092\u4f7f\u3063\u305f\u5805\u7262\u306a\u30c7\u30fc\u30bf\u691c\u8a3c\u65b9\u6cd5<\/a>      <\/li>      <li>        <a href=\"#i-23\">null\u30bb\u30fc\u30d5\u306a\u30a2\u30af\u30bb\u30b9\u65b9\u6cd5\u3068\u5b58\u5728\u3057\u306a\u3044\u30ad\u30fc\u3078\u306e\u5bfe\u51e6\u6cd5<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-24\">try-catch\u30d6\u30ed\u30c3\u30af\u3068\u7d44\u307f\u5408\u308f\u305b\u305f\u5b89\u5168\u306a\u914d\u5217\u64cd\u4f5c<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-25\">\u30c6\u30af\u30cb\u30c3\u30af6: \u9023\u60f3\u914d\u5217\u3068\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u9023\u643a \u2013 \u30e2\u30c0\u30f3PHP\u3067\u306e\u6d3b\u7528\u6cd5<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-26\">\u9023\u60f3\u914d\u5217\u3068\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u76f8\u4e92\u5909\u63db\u30c6\u30af\u30cb\u30c3\u30af<\/a>      <\/li>      <li>        <a href=\"#i-27\">json_encode\/json_decode\u3092\u6d3b\u7528\u3057\u305f\u30b7\u30ea\u30a2\u30e9\u30a4\u30ba\u624b\u6cd5<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-28\">DTO\uff08\u30c7\u30fc\u30bf\u8ee2\u9001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\uff09\u3068\u3057\u3066\u306e\u9023\u60f3\u914d\u5217\u306e\u4f7f\u7528\u4f8b<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-29\">\u30c6\u30af\u30cb\u30c3\u30af7: \u5b9f\u52d9\u3067\u4f7f\u3048\u308b\u9023\u60f3\u914d\u5217\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-30\">\u5927\u898f\u6a21\u9023\u60f3\u914d\u5217\u3092\u6271\u3046\u969b\u306e\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u524a\u6e1b\u65b9\u6cd5<\/a>      <\/li>      <li>        <a href=\"#i-31\">\u9023\u60f3\u914d\u5217\u64cd\u4f5c\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u3068\u305d\u306e\u56de\u907f\u6cd5<\/a>      <\/li>      <li>        <a href=\"#i-32\">SPL\u30c7\u30fc\u30bf\u69cb\u9020\u3092\u6d3b\u7528\u3057\u305f\u9ad8\u901f\u306a\u9023\u60f3\u914d\u5217\u64cd\u4f5c<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-33\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u8a08\u6e2c\u3068\u30c7\u30d0\u30c3\u30b0<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-34\">\u9023\u60f3\u914d\u5217\u6d3b\u7528\u306e\u5b9f\u8df5\u4f8b \u2013 \u73fe\u5834\u3067\u5373\u4f7f\u3048\u308b\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-35\">\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u7d50\u679c\u30bb\u30c3\u30c8\u306e\u52b9\u7387\u7684\u306a\u51e6\u7406\u65b9\u6cd5<\/a>      <\/li>      <li>        <a href=\"#i-36\">API\u30ec\u30b9\u30dd\u30f3\u30b9\u306e\u6574\u5f62\u3068\u51e6\u7406\u30c6\u30af\u30cb\u30c3\u30af<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-37\">\u30d5\u30a9\u30fc\u30e0\u30c7\u30fc\u30bf\u306e\u691c\u8a3c\u3068\u52a0\u5de5\u306b\u304a\u3051\u308b\u9023\u60f3\u914d\u5217\u306e\u6d3b\u7528\u6cd5<\/a>      <\/li>    <\/ul>  <\/li>  <li class=\"last\">    <a href=\"#i-38\">\u307e\u3068\u3081 \u2013 PHP\u9023\u60f3\u914d\u5217\u30de\u30b9\u30bf\u30fc\u3078\u306e\u6b21\u306e\u30b9\u30c6\u30c3\u30d7<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-39\">7\u3064\u306e\u30c6\u30af\u30cb\u30c3\u30af\u3092\u4f7f\u3044\u3053\u306a\u3059\u305f\u3081\u306e\u30c1\u30a7\u30c3\u30af\u30ea\u30b9\u30c8<\/a>      <\/li>      <li>        <a href=\"#i-40\">\u9023\u60f3\u914d\u5217\u3092\u52b9\u679c\u7684\u306b\u4f7f\u3046\u305f\u3081\u306e5\u3064\u306e\u539f\u5247<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-41\">\u3055\u3089\u306a\u308b\u5b66\u7fd2\u30ea\u30bd\u30fc\u30b9\u3068\u5b9f\u8df5\u7684\u306a\u8ab2\u984c<\/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\">\u30a4\u30f3\u30c8\u30ed\u30c0\u30af\u30b7\u30e7\u30f3<\/h2>\n\n\n\n<p>PHP\u306e\u9023\u60f3\u914d\u5217\u306f\u3001\u30e2\u30c0\u30f3\u306aWeb\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u958b\u767a\u306b\u304a\u3044\u3066\u6700\u3082\u983b\u7e41\u306b\u4f7f\u7528\u3055\u308c\u308b\u5f37\u529b\u306a\u30c7\u30fc\u30bf\u69cb\u9020\u306e\u4e00\u3064\u3067\u3059\u3002\u5358\u306a\u308b\u30c7\u30fc\u30bf\u306e\u683c\u7d0d\u5834\u6240\u3068\u3057\u3066\u3060\u3051\u3067\u306a\u304f\u3001\u8907\u96d1\u306a\u30c7\u30fc\u30bf\u64cd\u4f5c\u3084\u52b9\u7387\u7684\u306a\u60c5\u5831\u7ba1\u7406\u3092\u53ef\u80fd\u306b\u3059\u308b\u591a\u6a5f\u80fd\u30c4\u30fc\u30eb\u3068\u3057\u3066\u3001\u3042\u3089\u3086\u308b\u30ec\u30d9\u30eb\u306ePHP\u30d7\u30ed\u30b0\u30e9\u30de\u30fc\u306b\u3068\u3063\u3066\u5fc5\u9808\u306e\u30b9\u30ad\u30eb\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u9023\u60f3\u914d\u5217\u306e\u771f\u306e\u529b\u306f\u3001\u30c7\u30fc\u30bf\u306b\u610f\u5473\u306e\u3042\u308b\u540d\u524d\uff08\u30ad\u30fc\uff09\u3092\u4ed8\u3051\u3066\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b\u70b9\u306b\u3042\u308a\u307e\u3059\u3002\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u304b\u3089\u53d6\u5f97\u3057\u305f\u60c5\u5831\u306e\u6574\u7406\u3001API\u30ec\u30b9\u30dd\u30f3\u30b9\u306e\u51e6\u7406\u3001\u30d5\u30a9\u30fc\u30e0\u30c7\u30fc\u30bf\u306e\u691c\u8a3c\u3001\u8a2d\u5b9a\u60c5\u5831\u306e\u7ba1\u7406\u306a\u3069\u3001\u5b9f\u52d9\u3067\u76f4\u9762\u3059\u308b\u3055\u307e\u3056\u307e\u306a\u8ab2\u984c\u3092\u52b9\u7387\u7684\u306b\u89e3\u6c7a\u3067\u304d\u308b\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001PHP\u9023\u60f3\u914d\u5217\u306e\u57fa\u672c\u304b\u3089\u5fdc\u7528\u307e\u3067\u30017\u3064\u306e\u5b9f\u8df5\u7684\u30c6\u30af\u30cb\u30c3\u30af\u3092\u901a\u3057\u3066\u5fb9\u5e95\u89e3\u8aac\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u9023\u60f3\u914d\u5217\u306e\u591a\u6b21\u5143\u5316<\/strong> \u2013 \u8907\u96d1\u306a\u30c7\u30fc\u30bf\u69cb\u9020\u306e\u69cb\u7bc9<\/li>\n\n\n\n<li><strong>array_map\u3068array_filter\u306e\u6d3b\u7528<\/strong> \u2013 \u52b9\u7387\u7684\u306a\u30c7\u30fc\u30bf\u5909\u63db\u3068\u62bd\u51fa<\/li>\n\n\n\n<li><strong>\u30bd\u30fc\u30c8\u3068\u30b0\u30eb\u30fc\u30d7\u5316<\/strong> \u2013 \u30c7\u30fc\u30bf\u3092\u601d\u3044\u901a\u308a\u306b\u6574\u7406<\/li>\n\n\n\n<li><strong>\u30eb\u30fc\u30d7\u51e6\u7406\u306e\u6700\u9069\u5316<\/strong> \u2013 \u5927\u91cf\u30c7\u30fc\u30bf\u306e\u52b9\u7387\u7684\u306a\u51e6\u7406<\/li>\n\n\n\n<li><strong>\u30c7\u30fc\u30bf\u691c\u8a3c\u3068\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0<\/strong> \u2013 \u5805\u7262\u306a\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u958b\u767a<\/li>\n\n\n\n<li><strong>\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3068\u306e\u9023\u643a<\/strong> \u2013 \u30e2\u30c0\u30f3PHP\u306e\u5b9f\u88c5\u30d1\u30bf\u30fc\u30f3<\/li>\n\n\n\n<li><strong>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316<\/strong> \u2013 \u9ad8\u901f\u3067\u52b9\u7387\u7684\u306a\u914d\u5217\u64cd\u4f5c<\/li>\n<\/ol>\n\n\n\n<p><strong>\u521d\u5fc3\u8005\u306e\u65b9<\/strong>\u306b\u306f\u57fa\u672c\u7684\u306a\u6982\u5ff5\u3068\u65e5\u5e38\u7684\u306b\u4f7f\u3048\u308b\u5b9f\u7528\u30c6\u30af\u30cb\u30c3\u30af\u3001<strong>\u4e2d\u7d1a\u8005\u306e\u65b9<\/strong>\u306b\u306f\u52b9\u7387\u7684\u306a\u30c7\u30fc\u30bf\u51e6\u7406\u3068\u4e00\u6b69\u9032\u3093\u3060\u6d3b\u7528\u6cd5\u3001<strong>\u4e0a\u7d1a\u8005\u306e\u65b9<\/strong>\u306b\u306f\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u6700\u9069\u5316\u3068\u9ad8\u5ea6\u306a\u30c7\u30fc\u30bf\u69cb\u9020\u306e\u8a2d\u8a08\u30d1\u30bf\u30fc\u30f3\u307e\u3067\u3001\u30ec\u30d9\u30eb\u306b\u5fdc\u3058\u305f\u4fa1\u5024\u3042\u308b\u60c5\u5831\u3092\u304a\u5c4a\u3051\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u8a18\u4e8b\u3092\u901a\u3058\u3066\u3001PHP\u306e\u9023\u60f3\u914d\u5217\u3092\u5b8c\u5168\u306b\u30de\u30b9\u30bf\u30fc\u3057\u3001\u3088\u308a\u6d17\u7df4\u3055\u308c\u305f\u30b3\u30fc\u30c9\u3092\u66f8\u3051\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-1\">PHP\u9023\u60f3\u914d\u5217\u306e\u57fa\u790e\u77e5\u8b58 \u2013 \u62bc\u3055\u3048\u3066\u304a\u304f\u3079\u304d\u57fa\u672c\u6982\u5ff5<\/h2>\n\n\n\n<p>PHP\u306e\u9023\u60f3\u914d\u5217\u306f\u3001Web\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u958b\u767a\u306b\u304a\u3044\u3066\u6700\u3082\u983b\u7e41\u306b\u4f7f\u7528\u3055\u308c\u308b\u30c7\u30fc\u30bf\u69cb\u9020\u306e\u4e00\u3064\u3067\u3059\u3002\u52b9\u7387\u7684\u306a\u30c7\u30fc\u30bf\u7ba1\u7406\u3068\u64cd\u4f5c\u3092\u5b9f\u73fe\u3059\u308b\u305f\u3081\u306e\u91cd\u8981\u306a\u57fa\u790e\u77e5\u8b58\u3092\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-2\">\u9023\u60f3\u914d\u5217\u3068\u306f\uff1f\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u914d\u5217\u3068\u306e\u6c7a\u5b9a\u7684\u306a\u9055\u3044<\/h3>\n\n\n\n<p>\u9023\u60f3\u914d\u5217\u3068\u306f\u3001\u30c7\u30fc\u30bf\u306b\u5bfe\u3057\u3066**\u4efb\u610f\u306e\u540d\u524d\uff08\u30ad\u30fc\uff09**\u3092\u4ed8\u3051\u3066\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b\u914d\u5217\u306e\u3053\u3068\u3067\u3059\u3002\u901a\u5e38\u306e\u914d\u5217\uff08\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u914d\u5217\uff09\u3068\u306e\u6700\u5927\u306e\u9055\u3044\u306f\u3001\u30c7\u30fc\u30bf\u3078\u306e\u30a2\u30af\u30bb\u30b9\u65b9\u6cd5\u306b\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u914d\u5217\uff08\u6570\u5024\u30ad\u30fc\u3092\u4f7f\u7528\uff09\n$fruits = ['\u308a\u3093\u3054', '\u30d0\u30ca\u30ca', '\u30aa\u30ec\u30f3\u30b8'];\necho $fruits[0];  \/\/ \u300c\u308a\u3093\u3054\u300d\u3068\u51fa\u529b\n\n\/\/ \u9023\u60f3\u914d\u5217\uff08\u6587\u5b57\u5217\u30ad\u30fc\u3092\u4f7f\u7528\uff09\n$person = ['name' =&gt; '\u5c71\u7530\u592a\u90ce', 'age' =&gt; 30, 'job' =&gt; '\u30a8\u30f3\u30b8\u30cb\u30a2'];\necho $person['name'];  \/\/ \u300c\u5c71\u7530\u592a\u90ce\u300d\u3068\u51fa\u529b\n<\/pre>\n\n\n\n<p>\u9023\u60f3\u914d\u5217\u306e\u5927\u304d\u306a\u5229\u70b9\u306f\u3001<strong>\u30c7\u30fc\u30bf\u306b\u610f\u5473\u3092\u6301\u305f\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u308b<\/strong>\u70b9\u3067\u3059\u3002\u4e0a\u8a18\u306e\u4f8b\u3067\u306f\u3001\u6570\u5b57\u306e\u300c0\u300d\u3088\u308a\u3082\u300cname\u300d\u3068\u3044\u3046\u30ad\u30fc\u306e\u65b9\u304c\u76f4\u611f\u7684\u306b\u30c7\u30fc\u30bf\u3092\u8868\u73fe\u3067\u304d\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u8208\u5473\u6df1\u3044\u3053\u3068\u306b\u3001PHP\u3067\u306f\u5185\u90e8\u7684\u306b\u306f\u3059\u3079\u3066\u306e\u914d\u5217\u304c\u9023\u60f3\u914d\u5217\u3068\u3057\u3066\u5b9f\u88c5\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u914d\u5217\u306f\u3001\u30ad\u30fc\u3068\u3057\u3066\u6574\u6570\u3092\u4f7f\u7528\u3057\u305f\u9023\u60f3\u914d\u5217\u306e\u7279\u6b8a\u306a\u30b1\u30fc\u30b9\u3068\u8003\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-3\">\u9023\u60f3\u914d\u5217\u306e\u5ba3\u8a00\u3068\u521d\u671f\u5316 \u2013 \u30b7\u30f3\u30d7\u30eb\u3067\u78ba\u5b9f\u306a\u65b9\u6cd5<\/h3>\n\n\n\n<p>PHP\u3067\u306f\u3001\u9023\u60f3\u914d\u5217\u3092\u5ba3\u8a00\u30fb\u521d\u671f\u5316\u3059\u308b\u65b9\u6cd5\u304c\u3044\u304f\u3064\u304b\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u7a7a\u306e\u9023\u60f3\u914d\u5217\u3092\u4f5c\u6210\n$config = [];  \/\/ PHP 5.4\u4ee5\u964d\u306e\u77ed\u3044\u69cb\u6587\n$settings = array();  \/\/ \u5f93\u6765\u306e\u69cb\u6587\n\n\/\/ \u521d\u671f\u5024\u3092\u6301\u3064\u9023\u60f3\u914d\u5217\u3092\u4f5c\u6210\n$user = [\n    'id' =&gt; 1001,\n    'username' =&gt; 'yamada_taro',\n    'email' =&gt; 'yamada@example.com',\n    'is_active' =&gt; true\n];\n\n\/\/ \u65e2\u5b58\u306e\u914d\u5217\u306b\u8981\u7d20\u3092\u8ffd\u52a0\n$user['last_login'] = '2023-10-24 15:30:00';\n<\/pre>\n\n\n\n<p>\u9023\u60f3\u914d\u5217\u306e\u30ad\u30fc\u306b\u306f\u6587\u5b57\u5217\u307e\u305f\u306f\u6570\u5024\u3092\u4f7f\u7528\u3067\u304d\u307e\u3059\u304c\u3001\u5b9f\u52d9\u3067\u306f<strong>\u5206\u304b\u308a\u3084\u3059\u3044\u6587\u5b57\u5217\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3092\u63a8\u5968<\/strong>\u3057\u307e\u3059\u3002\u307e\u305f\u3001\u30ad\u30fc\u306b\u7279\u6b8a\u6587\u5b57\u3092\u542b\u3081\u308b\u5834\u5408\u306f\u5f15\u7528\u7b26\u3067\u56f2\u3080\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30ad\u30fc\u306b\u7279\u6b8a\u6587\u5b57\u3092\u542b\u3080\u5834\u5408\n$data['user-info'] = '\u3053\u306e\u8a18\u8ff0\u306fOK';\n$data[user-info] = '\u3053\u306e\u8a18\u8ff0\u306f\u30a8\u30e9\u30fc\u306b\u306a\u308b'; \/\/ \u30cf\u30a4\u30d5\u30f3\u304c\u30de\u30a4\u30ca\u30b9\u6f14\u7b97\u5b50\u3068\u89e3\u91c8\u3055\u308c\u308b\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-4\">\u30ad\u30fc\u3068\u5024\u306e\u30da\u30a2\u3092\u8ffd\u52a0\u30fb\u66f4\u65b0\u30fb\u524a\u9664\u3059\u308b\u6a19\u6e96\u7684\u306a\u65b9\u6cd5<\/h3>\n\n\n\n<p>\u9023\u60f3\u914d\u5217\u306e\u57fa\u672c\u64cd\u4f5c\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u306f\u3001\u52b9\u7387\u7684\u306a\u30c7\u30fc\u30bf\u7ba1\u7406\u306e\u7b2c\u4e00\u6b69\u3067\u3059\u3002<\/p>\n\n\n\n<p><strong>\u8981\u7d20\u306e\u8ffd\u52a0\u3068\u66f4\u65b0<\/strong>\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">$product = ['name' =&gt; '\u30ce\u30fc\u30c8PC', 'price' =&gt; 80000];\n\n\/\/ \u8981\u7d20\u306e\u8ffd\u52a0\n$product['stock'] = 5;\n$product['category'] = 'Electronics';\n\n\/\/ \u8981\u7d20\u306e\u66f4\u65b0\n$product['price'] = 75000; \/\/ \u5024\u4e0b\u3052\n<\/pre>\n\n\n\n<p><strong>\u8981\u7d20\u306e\u524a\u9664<\/strong>\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u7279\u5b9a\u306e\u8981\u7d20\u3092\u524a\u9664\nunset($product['stock']);\n\n\/\/ \u8907\u6570\u306e\u8981\u7d20\u3092\u4e00\u5ea6\u306b\u524a\u9664\nunset($product['category'], $product['price']);\n\n\/\/ \u914d\u5217\u81ea\u4f53\u3092\u7a7a\u306b\u3059\u308b\n$product = [];\n<\/pre>\n\n\n\n<p><strong>\u8981\u7d20\u306e\u5b58\u5728\u78ba\u8a8d<\/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=\"\">\/\/ isset()\u3067\u30ad\u30fc\u306e\u5b58\u5728\u3092\u78ba\u8a8d\uff08NULL\u306e\u5834\u5408\u306ffalse\u3092\u8fd4\u3059\uff09\nif (isset($product['price'])) {\n    echo \"\u4fa1\u683c\u60c5\u5831\u304c\u3042\u308a\u307e\u3059: {$product['price']}\u5186\";\n}\n\n\/\/ array_key_exists()\u3067\u30ad\u30fc\u306e\u5b58\u5728\u3092\u78ba\u8a8d\uff08\u5024\u304cNULL\u3067\u3082true\u3092\u8fd4\u3059\uff09\nif (array_key_exists('discount', $product)) {\n    echo \"\u5272\u5f15\u60c5\u5831\u304c\u3042\u308a\u307e\u3059\";\n}\n\n\/\/ PHP 7\u4ee5\u964d\u306eNull\u5408\u4f53\u6f14\u7b97\u5b50\u3092\u4f7f\u7528\u3057\u305f\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u306e\u8a2d\u5b9a\n$stock = $product['stock'] ?? 0; \/\/ stock\u304c\u5b58\u5728\u3057\u306a\u3044\u5834\u5408\u306f0\u3092\u30bb\u30c3\u30c8\n<\/pre>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u57fa\u672c\u64cd\u4f5c\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u30c7\u30fc\u30bf\u306e\u8ffd\u52a0\u3001\u66f4\u65b0\u3001\u524a\u9664\u3001\u53d6\u5f97\u3068\u3044\u3063\u305f\u65e5\u5e38\u7684\u306a\u30bf\u30b9\u30af\u3092\u7c21\u5358\u306b\u5b9f\u884c\u3067\u304d\u307e\u3059\u3002\u9023\u60f3\u914d\u5217\u306f\u7279\u306b<strong>\u8a2d\u5b9a\u60c5\u5831\u306e\u7ba1\u7406<\/strong>\u3084<strong>\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30ec\u30b3\u30fc\u30c9\u306e\u8868\u73fe<\/strong>\u3001<strong>API\u30c7\u30fc\u30bf\u306e\u51e6\u7406<\/strong>\u306a\u3069\u3001\u591a\u304f\u306e\u5b9f\u52d9\u30b7\u30fc\u30f3\u3067\u6d3b\u8e8d\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u57fa\u672c\u3092\u3057\u3063\u304b\u308a\u62bc\u3055\u3048\u308b\u3053\u3068\u3067\u3001\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u7d39\u4ecb\u3059\u308b\u3088\u308a\u9ad8\u5ea6\u306a\u30c6\u30af\u30cb\u30c3\u30af\u3078\u3068\u30b9\u30e0\u30fc\u30ba\u306b\u9032\u3080\u3053\u3068\u304c\u3067\u304d\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-5\">\u30c6\u30af\u30cb\u30c3\u30af1: \u9023\u60f3\u914d\u5217\u306e\u591a\u6b21\u5143\u5316 \u2013 \u8907\u96d1\u306a\u30c7\u30fc\u30bf\u69cb\u9020\u306e\u69cb\u7bc9\u65b9\u6cd5<\/h2>\n\n\n\n<p>\u9023\u60f3\u914d\u5217\u306e\u771f\u306e\u529b\u306f\u3001\u8907\u96d1\u306a\u30c7\u30fc\u30bf\u69cb\u9020\u3092\u8868\u73fe\u3067\u304d\u308b\u300c\u591a\u6b21\u5143\u5316\u300d\u306e\u80fd\u529b\u306b\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u30c6\u30af\u30cb\u30c3\u30af\u3092\u7fd2\u5f97\u3059\u308b\u3053\u3068\u3067\u3001\u968e\u5c64\u7684\u306a\u30c7\u30fc\u30bf\u30e2\u30c7\u30eb\u3092\u52b9\u7387\u7684\u306b\u69cb\u7bc9\u30fb\u7ba1\u7406\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-6\">2\u6b21\u5143\u9023\u60f3\u914d\u5217\u3067\u52b9\u7387\u7684\u306b\u30c7\u30fc\u30bf\u3092\u6574\u7406\u3059\u308b\u65b9\u6cd5<\/h3>\n\n\n\n<p>2\u6b21\u5143\u9023\u60f3\u914d\u5217\u306f\u3001\u300c\u9023\u60f3\u914d\u5217\u306e\u9023\u60f3\u914d\u5217\u300d\u3068\u8003\u3048\u308b\u3068\u5206\u304b\u308a\u3084\u3059\u3044\u3067\u3057\u3087\u3046\u3002\u3053\u308c\u3092\u4f7f\u3046\u3068\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u30c6\u30fc\u30d6\u30eb\u306e\u3088\u3046\u306a\u69cb\u9020\u3092\u7c21\u5358\u306b\u8868\u73fe\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=\"\">\/\/ \u30e6\u30fc\u30b6\u30fc\u30c7\u30fc\u30bf\u30922\u6b21\u5143\u9023\u60f3\u914d\u5217\u3067\u8868\u73fe\n$users = [\n    'user1' =&gt; [\n        'name' =&gt; '\u5c71\u7530\u592a\u90ce',\n        'email' =&gt; 'yamada@example.com',\n        'role' =&gt; 'admin'\n    ],\n    'user2' =&gt; [\n        'name' =&gt; '\u4f50\u85e4\u82b1\u5b50',\n        'email' =&gt; 'sato@example.com',\n        'role' =&gt; 'editor'\n    ],\n    'user3' =&gt; [\n        'name' =&gt; '\u9234\u6728\u4e00\u90ce',\n        'email' =&gt; 'suzuki@example.com',\n        'role' =&gt; 'viewer'\n    ]\n];\n\n\/\/ \u7279\u5b9a\u30e6\u30fc\u30b6\u30fc\u306e\u60c5\u5831\u306b\u30a2\u30af\u30bb\u30b9\necho $users['user1']['name']; \/\/ \u300c\u5c71\u7530\u592a\u90ce\u300d\u3068\u51fa\u529b\necho $users['user2']['role']; \/\/ \u300ceditor\u300d\u3068\u51fa\u529b\n<\/pre>\n\n\n\n<p>2\u6b21\u5143\u9023\u60f3\u914d\u5217\u306f\u3001\u30c7\u30fc\u30bf\u306e\u95a2\u9023\u6027\u3092\u7dad\u6301\u3057\u306a\u304c\u3089\u6574\u7406\u3059\u308b\u306e\u306b\u6700\u9069\u3067\u3059\u3002\u4ee3\u8868\u7684\u306a\u6d3b\u7528\u30b7\u30fc\u30f3\u306b\u306f\u4ee5\u4e0b\u304c\u3042\u308a\u307e\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8907\u6570\u30ec\u30b3\u30fc\u30c9\u306e\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u7d50\u679c\u30bb\u30c3\u30c8\u306e\u6574\u7406<\/li>\n\n\n\n<li>\u591a\u8a00\u8a9e\u5bfe\u5fdc\u306e\u305f\u3081\u306e\u7ffb\u8a33\u30c7\u30fc\u30bf\u306e\u7ba1\u7406<\/li>\n\n\n\n<li>\u7570\u306a\u308b\u30ab\u30c6\u30b4\u30ea\u306e\u8a2d\u5b9a\u30b0\u30eb\u30fc\u30d7\u306e\u6574\u7406<\/li>\n<\/ul>\n\n\n\n<p>2\u6b21\u5143\u914d\u5217\u3092\u52d5\u7684\u306b\u69cb\u7bc9\u3059\u308b\u3053\u3068\u3082\u7c21\u5358\u3067\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u7d50\u679c\u304b\u30892\u6b21\u5143\u914d\u5217\u3092\u52d5\u7684\u306b\u69cb\u7bc9\n$products = [];\nforeach ($db_results as $row) {\n    $product_id = $row['id'];\n    $products[$product_id] = [\n        'name' =&gt; $row['product_name'],\n        'price' =&gt; $row['price'],\n        'stock' =&gt; $row['stock_count']\n    ];\n}\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-7\">\u8907\u96d1\u306a\u30cd\u30b9\u30c8\u3092\u6301\u3064\u591a\u6b21\u5143\u914d\u5217\u306e\u4f5c\u6210\u3068\u30a2\u30af\u30bb\u30b9\u65b9\u6cd5<\/h3>\n\n\n\n<p>\u30c7\u30fc\u30bf\u69cb\u9020\u304c\u3055\u3089\u306b\u8907\u96d1\u306b\u306a\u308b\u3068\u30013\u6b21\u5143\u4ee5\u4e0a\u306e\u591a\u6b21\u5143\u914d\u5217\u304c\u5fc5\u8981\u306b\u306a\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001E\u30b3\u30de\u30fc\u30b9\u30b7\u30b9\u30c6\u30e0\u306e\u5546\u54c1\u30ab\u30bf\u30ed\u30b0\u3092\u8003\u3048\u3066\u307f\u307e\u3057\u3087\u3046\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u8907\u96d1\u306a\u591a\u6b21\u5143\u9023\u60f3\u914d\u5217\u306e\u4f8b\n$catalog = [\n    'electronics' =&gt; [\n        'computers' =&gt; [\n            'laptop1' =&gt; [\n                'name' =&gt; 'ProBook X3',\n                'specs' =&gt; [\n                    'cpu' =&gt; 'Core i7',\n                    'ram' =&gt; '16GB',\n                    'storage' =&gt; '512GB SSD'\n                ],\n                'price' =&gt; 150000,\n                'stock' =&gt; 10\n            ],\n            'laptop2' =&gt; [\n                \/\/ \u4ed6\u306e\u30e9\u30c3\u30d7\u30c8\u30c3\u30d7\u60c5\u5831...\n            ]\n        ],\n        'smartphones' =&gt; [\n            \/\/ \u30b9\u30de\u30fc\u30c8\u30d5\u30a9\u30f3\u60c5\u5831...\n        ]\n    ],\n    'furniture' =&gt; [\n        \/\/ \u5bb6\u5177\u60c5\u5831...\n    ]\n];\n\n\/\/ \u6df1\u304f\u30cd\u30b9\u30c8\u3055\u308c\u305f\u30c7\u30fc\u30bf\u3078\u306e\u30a2\u30af\u30bb\u30b9\necho $catalog['electronics']['computers']['laptop1']['specs']['cpu']; \/\/ \u300cCore i7\u300d\u3068\u51fa\u529b\n<\/pre>\n\n\n\n<p>\u3053\u306e\u4f8b\u3067\u306f\u3001\u30ab\u30c6\u30b4\u30ea\u2192\u30b5\u30d6\u30ab\u30c6\u30b4\u30ea\u2192\u5546\u54c1ID\u2192\u5546\u54c1\u8a73\u7d30\u2192\u4ed5\u69d8\u3068\u3044\u30465\u968e\u5c64\u306e\u30cd\u30b9\u30c8\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u6df1\u3044\u30cd\u30b9\u30c8\u3092\u6271\u3046\u969b\u306f\u3001\u4ee5\u4e0b\u306e\u70b9\u306b\u6ce8\u610f\u3059\u308b\u3068\u826f\u3044\u3067\u3057\u3087\u3046\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u6bb5\u968e\u7684\u306a\u30a2\u30af\u30bb\u30b9<\/strong>: \u5909\u6570\u306b\u6bb5\u968e\u7684\u306b\u683c\u7d0d\u3057\u3066\u30a2\u30af\u30bb\u30b9\u3059\u308b\u3068\u53ef\u8aad\u6027\u304c\u5411\u4e0a\u3057\u307e\u3059<\/li>\n<\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">$laptop = $catalog['electronics']['computers']['laptop1'];\necho $laptop['specs']['cpu']; \/\/ \u3088\u308a\u7c21\u6f54\u306a\u30a2\u30af\u30bb\u30b9\n<\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u5b58\u5728\u78ba\u8a8d\u306e\u9023\u9396<\/strong>: \u30cd\u30b9\u30c8\u304c\u6df1\u304f\u306a\u308b\u307b\u3069\u3001\u30ad\u30fc\u306e\u5b58\u5728\u78ba\u8a8d\u304c\u91cd\u8981\u306b\u306a\u308a\u307e\u3059<\/li>\n<\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ PHP 7\u4ee5\u964d\u306eNull\u5408\u4f53\u6f14\u7b97\u5b50\u3092\u4f7f\u3063\u305f\u5b89\u5168\u306a\u30a2\u30af\u30bb\u30b9\n$cpu = $catalog['electronics']['computers']['laptop1']['specs']['cpu'] ?? '\u60c5\u5831\u306a\u3057';\n\n\/\/ \u6bb5\u968e\u7684\u306a\u5b58\u5728\u78ba\u8a8d\nif (isset($catalog['electronics']['computers']['laptop1'])) {\n    $laptop = $catalog['electronics']['computers']['laptop1'];\n    if (isset($laptop['specs']['cpu'])) {\n        echo $laptop['specs']['cpu'];\n    }\n}\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-8\">JSON\u3068\u306e\u76f8\u4e92\u5909\u63db\u3067\u62e1\u5f35\u6027\u306e\u9ad8\u3044\u30c7\u30fc\u30bf\u69cb\u9020\u3092\u5b9f\u73fe\u3059\u308b<\/h3>\n\n\n\n<p>PHP\u306e\u9023\u60f3\u914d\u5217\u3068JSON\u5f62\u5f0f\u306f\u69cb\u9020\u7684\u306b\u975e\u5e38\u306b\u4f3c\u3066\u3044\u308b\u305f\u3081\u3001\u76f8\u4e92\u5909\u63db\u304c\u5bb9\u6613\u3067\u3059\u3002\u3053\u306e\u7279\u6027\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30c7\u30fc\u30bf\u306e\u4fdd\u5b58\u3001\u8ee2\u9001\u3001API\u9023\u643a\u306a\u3069\u304c\u683c\u6bb5\u306b\u7c21\u5358\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u9023\u60f3\u914d\u5217\u304b\u3089JSON\u3078\u306e\u5909\u63db\n$user_data = [\n    'id' =&gt; 123,\n    'name' =&gt; '\u5c71\u7530\u592a\u90ce',\n    'skills' =&gt; ['PHP', 'JavaScript', 'MySQL'],\n    'address' =&gt; [\n        'city' =&gt; '\u6771\u4eac',\n        'zip' =&gt; '123-4567'\n    ]\n];\n\n$json = json_encode($user_data, JSON_UNESCAPED_UNICODE | JSON_PRETTY_PRINT);\necho $json;\n\/*\n{\n    \"id\": 123,\n    \"name\": \"\u5c71\u7530\u592a\u90ce\",\n    \"skills\": [\"PHP\", \"JavaScript\", \"MySQL\"],\n    \"address\": {\n        \"city\": \"\u6771\u4eac\",\n        \"zip\": \"123-4567\"\n    }\n}\n*\/\n\n\/\/ JSON\u304b\u3089\u9023\u60f3\u914d\u5217\u3078\u306e\u5909\u63db\n$received_json = '{\"product\":{\"name\":\"\u30b9\u30de\u30fc\u30c8\u30d5\u30a9\u30f3\",\"price\":50000}}';\n$data = json_decode($received_json, true); \/\/ \u7b2c2\u5f15\u6570\u3092true\u306b\u3059\u308b\u3068\u9023\u60f3\u914d\u5217\u3068\u3057\u3066\u53d6\u5f97\n\necho $data['product']['name']; \/\/ \u300c\u30b9\u30de\u30fc\u30c8\u30d5\u30a9\u30f3\u300d\u3068\u51fa\u529b\n<\/pre>\n\n\n\n<p>\u3053\u306e\u76f8\u4e92\u5909\u63db\u6a5f\u80fd\u3092\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30b7\u30ca\u30ea\u30aa\u304c\u5b9f\u73fe\u3067\u304d\u307e\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u306e\u7ba1\u7406<\/strong>: \u8907\u96d1\u306a\u8a2d\u5b9a\u3092JSON\u5f62\u5f0f\u3067\u4fdd\u5b58\u3057\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u8d77\u52d5\u6642\u306b\u9023\u60f3\u914d\u5217\u306b\u8aad\u307f\u8fbc\u3080<\/li>\n\n\n\n<li><strong>API\u3068\u306e\u9023\u643a<\/strong>: RESTful API\u304b\u3089JSON\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\u3057\u3001\u9023\u60f3\u914d\u5217\u306b\u5909\u63db\u3057\u3066\u51e6\u7406<\/li>\n\n\n\n<li><strong>\u30c7\u30fc\u30bf\u306e\u30b7\u30ea\u30a2\u30e9\u30a4\u30ba<\/strong>: \u8907\u96d1\u306a\u30c7\u30fc\u30bf\u69cb\u9020\u3092JSON\u5f62\u5f0f\u3067\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u4fdd\u5b58<\/li>\n\n\n\n<li><strong>\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u30b5\u30a4\u30c9\u3068\u306e\u30c7\u30fc\u30bf\u5171\u6709<\/strong>: \u30b5\u30fc\u30d0\u30fc\u5074\u306e\u9023\u60f3\u914d\u5217\u30c7\u30fc\u30bf\u3092\u3001JavaScript\u3067\u89e3\u91c8\u3067\u304d\u308bJSON\u5f62\u5f0f\u306b\u5909\u63db<\/li>\n<\/ul>\n\n\n\n<p>\u591a\u6b21\u5143\u9023\u60f3\u914d\u5217\u3068JSON\u5909\u63db\u306e\u7d44\u307f\u5408\u308f\u305b\u306f\u3001\u73fe\u4ee3\u306eWeb\u958b\u767a\u306b\u304a\u3051\u308b\u5f37\u529b\u306a\u30c7\u30fc\u30bf\u7ba1\u7406\u30c6\u30af\u30cb\u30c3\u30af\u3067\u3059\u3002\u9069\u5207\u306b\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u67d4\u8edf\u3067\u62e1\u5f35\u6027\u306e\u9ad8\u3044\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u8a2d\u8a08\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-9\">\u30c6\u30af\u30cb\u30c3\u30af2: array_map\u3068array_filter\u3092\u6d3b\u7528\u3057\u305f\u9023\u60f3\u914d\u5217\u306e\u64cd\u4f5c<\/h2>\n\n\n\n<p>\u9023\u60f3\u914d\u5217\u3092\u52b9\u7387\u7684\u306b\u6271\u3046\u305f\u3081\u306b\u306f\u3001PHP\u306e\u5f37\u529b\u306a\u914d\u5217\u95a2\u6570\u3092\u4f7f\u3044\u3053\u306a\u3059\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002\u7279\u306b<code>array_map<\/code>\u3068<code>array_filter<\/code>\u306f\u3001\u7e70\u308a\u8fd4\u3057\u51e6\u7406\u3092\u7c21\u6f54\u306b\u8a18\u8ff0\u3067\u304d\u3001\u9023\u60f3\u914d\u5217\u306e\u64cd\u4f5c\u3092\u5927\u5e45\u306b\u52b9\u7387\u5316\u3067\u304d\u308b\u4fbf\u5229\u306a\u95a2\u6570\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-10\">array_map\u3067\u9023\u60f3\u914d\u5217\u306e\u5168\u8981\u7d20\u3092\u4e00\u62ec\u5909\u63db\u3059\u308b\u65b9\u6cd5<\/h3>\n\n\n\n<p><code>array_map<\/code>\u95a2\u6570\u306f\u3001\u914d\u5217\u306e\u5168\u8981\u7d20\u306b\u5bfe\u3057\u3066\u540c\u3058\u51e6\u7406\u3092\u9069\u7528\u3057\u3001\u305d\u306e\u7d50\u679c\u3092\u65b0\u3057\u3044\u914d\u5217\u3068\u3057\u3066\u8fd4\u3057\u307e\u3059\u3002\u30eb\u30fc\u30d7\u3092\u66f8\u304f\u624b\u9593\u3092\u7701\u304d\u3001\u30b3\u30fc\u30c9\u3092\u3088\u308a\u7c21\u6f54\u306b\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>\u57fa\u672c\u69cb\u6587<\/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=\"\">array_map(callable $callback, array $array, array ...$arrays): array\n<\/pre>\n\n\n\n<p><strong>\u9023\u60f3\u914d\u5217\u306e\u5024\u3092\u4e00\u62ec\u5909\u63db\u3059\u308b\u4f8b<\/strong>:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u5546\u54c1\u4fa1\u683c\u306e\u914d\u5217\u306b\u6d88\u8cbb\u7a0e\u3092\u9069\u7528\u3059\u308b\n$prices = [\n    'product1' =&gt; 1000,\n    'product2' =&gt; 2000,\n    'product3' =&gt; 1500\n];\n\n\/\/ 10%\u306e\u6d88\u8cbb\u7a0e\u3092\u8ffd\u52a0\n$taxed_prices = array_map(function($price) {\n    return $price * 1.1;\n}, $prices);\n\n\/\/ \u7d50\u679c: ['product1' =&gt; 1100, 'product2' =&gt; 2200, 'product3' =&gt; 1650]\n<\/pre>\n\n\n\n<p><strong>PHP 7.4\u4ee5\u964d\u3067\u306f\u30a2\u30ed\u30fc\u95a2\u6570\u3092\u4f7f\u7528\u3057\u3066\u3001\u3055\u3089\u306b\u7c21\u6f54\u306b\u66f8\u3051\u307e\u3059<\/strong>:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">$taxed_prices = array_map(fn($price) =&gt; $price * 1.1, $prices);\n<\/pre>\n\n\n\n<p><strong>\u8907\u96d1\u306a\u9023\u60f3\u914d\u5217\u306e\u5909\u63db<\/strong>:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30e6\u30fc\u30b6\u30fc\u60c5\u5831\u306e\u914d\u5217\n$users = [\n    'user1' =&gt; ['name' =&gt; '\u5c71\u7530\u592a\u90ce', 'age' =&gt; 28, 'role' =&gt; 'admin'],\n    'user2' =&gt; ['name' =&gt; '\u4f50\u85e4\u82b1\u5b50', 'age' =&gt; 24, 'role' =&gt; 'user'],\n    'user3' =&gt; ['name' =&gt; '\u9234\u6728\u4e00\u90ce', 'age' =&gt; 32, 'role' =&gt; 'editor']\n];\n\n\/\/ \u8868\u793a\u7528\u306b\u30c7\u30fc\u30bf\u5f62\u5f0f\u3092\u5909\u63db\n$formatted_users = array_map(function($user) {\n    return [\n        'display_name' =&gt; $user['name'] . '(' . $user['age'] . '\u6b73)',\n        'is_admin' =&gt; $user['role'] === 'admin',\n        'last_login' =&gt; '\u672a\u30ed\u30b0\u30a4\u30f3'  \/\/ \u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u3092\u8a2d\u5b9a\n    ];\n}, $users);\n<\/pre>\n\n\n\n<p><strong>\u30ad\u30fc\u3068\u5024\u306e\u4e21\u65b9\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u5834\u5408<\/strong>:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30ad\u30fc\u3092\u7b2c2\u5f15\u6570\u3067\u53d6\u5f97\n$user_emails = [\n    'yamada' =&gt; 'yamada@example.com',\n    'sato' =&gt; 'sato@example.com',\n    'suzuki' =&gt; 'suzuki@example.com'\n];\n\n$formatted_emails = array_map(function($email, $username) {\n    return $username . ' &lt;' . $email . '&gt;';\n}, $user_emails, array_keys($user_emails));\n\n\/\/ ['yamada' =&gt; 'yamada &lt;yamada@example.com&gt;', ...]\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-11\">array_filter\u3067\u6761\u4ef6\u306b\u5408\u3046\u8981\u7d20\u3060\u3051\u3092\u7c21\u5358\u306b\u62bd\u51fa\u3059\u308b<\/h3>\n\n\n\n<p><code>array_filter<\/code>\u95a2\u6570\u306f\u3001\u6761\u4ef6\u306b\u4e00\u81f4\u3059\u308b\u8981\u7d20\u3060\u3051\u3092\u62bd\u51fa\u3059\u308b\u5f37\u529b\u306a\u95a2\u6570\u3067\u3059\u3002\u6761\u4ef6\u5224\u5b9a\u306b\u306f\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>\u57fa\u672c\u69cb\u6587<\/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=\"\">array_filter(array $array, ?callable $callback = null, int $mode = 0): array\n<\/pre>\n\n\n\n<p><strong>\u57fa\u672c\u7684\u306a\u4f7f\u7528\u4f8b<\/strong>:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u7ba1\u7406\u8005\u30e6\u30fc\u30b6\u30fc\u3060\u3051\u3092\u62bd\u51fa\n$admin_users = array_filter($users, function($user) {\n    return $user['role'] === 'admin';\n});\n\n\/\/ \u5728\u5eab\u304c\u3042\u308b\u5546\u54c1\u3060\u3051\u3092\u62bd\u51fa\n$products = [\n    'item1' =&gt; ['name' =&gt; '\u30ce\u30fc\u30c8PC', 'price' =&gt; 80000, 'stock' =&gt; 5],\n    'item2' =&gt; ['name' =&gt; '\u30bf\u30d6\u30ec\u30c3\u30c8', 'price' =&gt; 50000, 'stock' =&gt; 0],\n    'item3' =&gt; ['name' =&gt; '\u30b9\u30de\u30fc\u30c8\u30d5\u30a9\u30f3', 'price' =&gt; 60000, 'stock' =&gt; 8]\n];\n\n$in_stock = array_filter($products, function($product) {\n    return $product['stock'] &gt; 0;\n});\n<\/pre>\n\n\n\n<p><strong>\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\u3092\u7701\u7565\u3059\u308b\u3068\u3001\u7a7a\u3067\u306a\u3044\u5024\u3060\u3051\u304c\u6b8b\u308a\u307e\u3059<\/strong>:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">$data = [\n    'name' =&gt; '\u5c71\u7530\u592a\u90ce',\n    'email' =&gt; 'yamada@example.com',\n    'phone' =&gt; '',\n    'address' =&gt; null\n];\n\n\/\/ \u7a7a\u3067\u306a\u3044\u5024\u3060\u3051\u3092\u62bd\u51fa\n$filled_data = array_filter($data);\n\/\/ \u7d50\u679c: ['name' =&gt; '\u5c71\u7530\u592a\u90ce', 'email' =&gt; 'yamada@example.com']\n<\/pre>\n\n\n\n<p><strong>\u30ad\u30fc\u3067\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3059\u308b\u5834\u5408\uff08PHP 5.6\u4ee5\u964d\uff09<\/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=\"\">\/\/ ARRAY_FILTER_USE_KEY \u3092\u4f7f\u7528\u3057\u3066\u30ad\u30fc\u3067\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\n$data = [\n    'user_name' =&gt; '\u5c71\u7530\u592a\u90ce',\n    'user_email' =&gt; 'yamada@example.com',\n    'admin_note' =&gt; '\u8981\u78ba\u8a8d',\n    'user_phone' =&gt; '090-1234-5678'\n];\n\n\/\/ 'user_' \u3067\u59cb\u307e\u308b\u30ad\u30fc\u3060\u3051\u3092\u62bd\u51fa\n$user_data = array_filter($data, function($key) {\n    return strpos($key, 'user_') === 0;\n}, ARRAY_FILTER_USE_KEY);\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-12\">\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\u3092\u4f7f\u3063\u305f\u9ad8\u5ea6\u306a\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u30c6\u30af\u30cb\u30c3\u30af<\/h3>\n\n\n\n<p>\u3088\u308a\u8907\u96d1\u306a\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3067\u306f\u3001\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\u306e\u67d4\u8edf\u6027\u3092\u6d3b\u7528\u3057\u3066\u9ad8\u5ea6\u306a\u6761\u4ef6\u3092\u5b9f\u88c5\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>\u5916\u90e8\u5909\u6570\u3092\u53c2\u7167\u3059\u308b\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0<\/strong>:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u6307\u5b9a\u3057\u305f\u4fa1\u683c\u7bc4\u56f2\u5185\u306e\u5546\u54c1\u3092\u62bd\u51fa\n$min_price = 30000;\n$max_price = 70000;\n\n$filtered_products = array_filter($products, function($product) use ($min_price, $max_price) {\n    return $product['price'] &gt;= $min_price &amp;&amp; $product['price'] &lt;= $max_price;\n});\n<\/pre>\n\n\n\n<p><strong>\u8907\u6570\u306e\u6761\u4ef6\u3092\u7d44\u307f\u5408\u308f\u305b\u308b<\/strong>:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u5728\u5eab\u304c\u3042\u308a\u30015\u4e07\u5186\u4ee5\u4e0b\u306e\u5546\u54c1\u3060\u3051\u3092\u62bd\u51fa\n$affordable_in_stock = array_filter($products, function($product) {\n    return $product['stock'] &gt; 0 &amp;&amp; $product['price'] &lt;= 50000;\n});\n<\/pre>\n\n\n\n<p><strong>\u9023\u9396\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0<\/strong>:<\/p>\n\n\n\n<p>\u8907\u6570\u306e\u30d5\u30a3\u30eb\u30bf\u30fc\u3092\u9806\u306b\u9069\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u8907\u96d1\u306a\u6761\u4ef6\u3092\u69cb\u7bc9\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u624b\u98061: \u5728\u5eab\u304c\u3042\u308b\u5546\u54c1\u3092\u62bd\u51fa\n$in_stock = array_filter($products, fn($p) =&gt; $p['stock'] &gt; 0);\n\n\/\/ \u624b\u98062: \u62bd\u51fa\u7d50\u679c\u304b\u30895\u4e07\u5186\u4ee5\u4e0b\u306e\u5546\u54c1\u3092\u62bd\u51fa\n$affordable = array_filter($in_stock, fn($p) =&gt; $p['price'] &lt;= 50000);\n<\/pre>\n\n\n\n<p><strong>array_map\u3068array_filter\u306e\u7d44\u307f\u5408\u308f\u305b<\/strong>:<\/p>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u95a2\u6570\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u5f37\u529b\u306a\u30c7\u30fc\u30bf\u51e6\u7406\u30d1\u30a4\u30d7\u30e9\u30a4\u30f3\u3092\u69cb\u7bc9\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u5728\u5eab\u304c\u3042\u308b\u5546\u54c1\u3060\u3051\u3092\u62bd\u51fa\u3057\u3001\u7a0e\u8fbc\u4fa1\u683c\u3092\u8a08\u7b97\n$available_products = array_map(\n    fn($p) =&gt; [\n        'name' =&gt; $p['name'],\n        'price_with_tax' =&gt; $p['price'] * 1.1,\n        'stock' =&gt; $p['stock']\n    ],\n    array_filter($products, fn($p) =&gt; $p['stock'] &gt; 0)\n);\n<\/pre>\n\n\n\n<p><code>array_map<\/code>\u3068<code>array_filter<\/code>\u3092\u4f7f\u3044\u3053\u306a\u3059\u3053\u3068\u3067\u3001\u5f93\u6765\u306e<code>foreach<\/code>\u30eb\u30fc\u30d7\u3088\u308a\u3082\u7c21\u6f54\u3067\u8aad\u307f\u3084\u3059\u3044\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u7279\u306b\u5927\u91cf\u306e\u30c7\u30fc\u30bf\u51e6\u7406\u3084\u8907\u96d1\u306a\u5909\u63db\u51e6\u7406\u3092\u884c\u3046\u5834\u5408\u3001\u3053\u308c\u3089\u306e\u95a2\u6570\u3092\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u958b\u767a\u52b9\u7387\u304c\u5927\u5e45\u306b\u5411\u4e0a\u3059\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-13\">\u30c6\u30af\u30cb\u30c3\u30af3: \u9023\u60f3\u914d\u5217\u306e\u30bd\u30fc\u30c8\u3068\u30b0\u30eb\u30fc\u30d7\u5316 \u2013 \u30c7\u30fc\u30bf\u3092\u6574\u7406\u3059\u308b\u5f37\u529b\u306a\u65b9\u6cd5<\/h2>\n\n\n\n<p>\u9023\u60f3\u914d\u5217\u306e\u5927\u304d\u306a\u5f37\u307f\u306e\u4e00\u3064\u304c\u3001\u30c7\u30fc\u30bf\u3092\u67d4\u8edf\u306b\u6574\u7406\u3067\u304d\u308b\u3053\u3068\u3067\u3059\u3002\u7279\u306b\u30bd\u30fc\u30c8\u3068\u30b0\u30eb\u30fc\u30d7\u5316\u306e\u30c6\u30af\u30cb\u30c3\u30af\u3092\u7fd2\u5f97\u3059\u308b\u3053\u3068\u3067\u3001\u8907\u96d1\u306a\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u3082\u601d\u3044\u306e\u307e\u307e\u306b\u64cd\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-14\">\u5024\u30fb\u30ad\u30fc\u30fb\u30ab\u30b9\u30bf\u30e0\u6761\u4ef6\u306b\u3088\u308b\u30bd\u30fc\u30c8\u306e\u5b9f\u88c5\u65b9\u6cd5<\/h3>\n\n\n\n<p>PHP\u306b\u306f\u9023\u60f3\u914d\u5217\u3092\u30bd\u30fc\u30c8\u3059\u308b\u305f\u3081\u306e\u69d8\u3005\u306a\u95a2\u6570\u304c\u7528\u610f\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u76ee\u7684\u306b\u5fdc\u3058\u3066\u9069\u5207\u306a\u95a2\u6570\u3092\u9078\u3076\u3053\u3068\u304c\u30dd\u30a4\u30f3\u30c8\u3067\u3059\u3002<\/p>\n\n\n\n<p><strong>\u5024\u3067\u30bd\u30fc\u30c8\u3059\u308b\u57fa\u672c\u7684\u306a\u65b9\u6cd5<\/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=\"\">\/\/ \u5546\u54c1\u306e\u9023\u60f3\u914d\u5217\n$products = [\n    'prod001' =&gt; ['name' =&gt; '\u30ce\u30fc\u30c8PC', 'price' =&gt; 80000],\n    'prod002' =&gt; ['name' =&gt; '\u30bf\u30d6\u30ec\u30c3\u30c8', 'price' =&gt; 50000],\n    'prod003' =&gt; ['name' =&gt; '\u30b9\u30de\u30fc\u30c8\u30d5\u30a9\u30f3', 'price' =&gt; 60000]\n];\n\n\/\/ \u5358\u7d14\u306a\u914d\u5217\u306e\u5024\u3067\u30bd\u30fc\u30c8\n$numbers = [5, 3, 8, 1, 2];\nsort($numbers); \/\/ [1, 2, 3, 5, 8] - \u30ad\u30fc\u306f\u518d\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\n\n\/\/ \u9023\u60f3\u914d\u5217\u3092\u5024\u3067\u30bd\u30fc\u30c8\uff08\u30ad\u30fc\u3092\u4fdd\u6301\uff09\n$names = ['c' =&gt; '\u7530\u4e2d', 'a' =&gt; '\u9234\u6728', 'b' =&gt; '\u4f50\u85e4'];\nasort($names); \/\/ ['a' =&gt; '\u9234\u6728', 'b' =&gt; '\u4f50\u85e4', 'c' =&gt; '\u7530\u4e2d']\n\n\/\/ \u9023\u60f3\u914d\u5217\u3092\u30ad\u30fc\u3067\u30bd\u30fc\u30c8\nksort($names); \/\/ ['a' =&gt; '\u9234\u6728', 'b' =&gt; '\u4f50\u85e4', 'c' =&gt; '\u7530\u4e2d']\n\n\/\/ \u964d\u9806\u30bd\u30fc\u30c8\uff08\u5024\uff09\narsort($names); \/\/ ['c' =&gt; '\u7530\u4e2d', 'b' =&gt; '\u4f50\u85e4', 'a' =&gt; '\u9234\u6728'] \n\n\/\/ \u964d\u9806\u30bd\u30fc\u30c8\uff08\u30ad\u30fc\uff09\nkrsort($names); \/\/ ['c' =&gt; '\u7530\u4e2d', 'b' =&gt; '\u4f50\u85e4', 'a' =&gt; '\u9234\u6728']\n<\/pre>\n\n\n\n<p><strong>\u591a\u6b21\u5143\u914d\u5217\u3092\u7279\u5b9a\u306e\u30ad\u30fc\u3067\u30bd\u30fc\u30c8\u3059\u308b<\/strong>:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u5546\u54c1\u3092\u4fa1\u683c\u9806\u306b\u30bd\u30fc\u30c8\nforeach ($products as $key =&gt; $row) {\n    $prices[$key] = $row['price'];\n}\narray_multisort($prices, SORT_ASC, $products);\n\n\/\/ \u307e\u305f\u306f\nuasort($products, function($a, $b) {\n    return $a['price'] &lt;=&gt; $b['price']; \/\/ PHP 7\u4ee5\u964d\u306e\u5b87\u5b99\u8239\u6f14\u7b97\u5b50\n});\n<\/pre>\n\n\n\n<p><strong>\u8907\u6570\u6761\u4ef6\u3067\u30bd\u30fc\u30c8\u3059\u308b<\/strong>:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">$users = [\n    ['name' =&gt; '\u5c71\u7530', 'age' =&gt; 28, 'role' =&gt; 'admin'],\n    ['name' =&gt; '\u7530\u4e2d', 'age' =&gt; 28, 'role' =&gt; 'user'],\n    ['name' =&gt; '\u4f50\u85e4', 'age' =&gt; 24, 'role' =&gt; 'admin']\n];\n\n\/\/ \u5e74\u9f62\u3067\u6607\u9806\u30bd\u30fc\u30c8\u3001\u540c\u3058\u5e74\u9f62\u306a\u3089\u540d\u524d\u3067\u6607\u9806\u30bd\u30fc\u30c8\nusort($users, function($a, $b) {\n    \/\/ \u5e74\u9f62\u3092\u6bd4\u8f03\n    $age_cmp = $a['age'] &lt;=&gt; $b['age'];\n    \n    \/\/ \u5e74\u9f62\u304c\u540c\u3058\u306a\u3089\u540d\u524d\u3067\u6bd4\u8f03\n    if ($age_cmp === 0) {\n        return $a['name'] &lt;=&gt; $b['name'];\n    }\n    \n    return $age_cmp;\n});\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-15\">usort\u3068usort\u7cfb\u95a2\u6570\u3092\u4f7f\u7528\u3057\u305f\u30b1\u30fc\u30b9\u30b9\u30bf\u30c7\u30a3<\/h3>\n\n\n\n<p><code>usort<\/code>\u7cfb\u95a2\u6570\u306f\u3001\u8907\u96d1\u306a\u6761\u4ef6\u3067\u30bd\u30fc\u30c8\u3059\u308b\u969b\u306b\u975e\u5e38\u306b\u5f37\u529b\u3067\u3059\u3002\u5b9f\u969b\u306e\u30b1\u30fc\u30b9\u3067\u3069\u3046\u6d3b\u7528\u3059\u308b\u304b\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p><strong>\u30b1\u30fc\u30b91: \u5546\u54c1\u3092\u5272\u5f15\u7387\u306e\u9ad8\u3044\u9806\u306b\u30bd\u30fc\u30c8<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">$products = [\n    ['name' =&gt; '\u30ce\u30fc\u30c8PC', 'original_price' =&gt; 100000, 'sale_price' =&gt; 80000],\n    ['name' =&gt; '\u30bf\u30d6\u30ec\u30c3\u30c8', 'original_price' =&gt; 60000, 'sale_price' =&gt; 45000],\n    ['name' =&gt; '\u30b9\u30de\u30fc\u30c8\u30d5\u30a9\u30f3', 'original_price' =&gt; 80000, 'sale_price' =&gt; 68000]\n];\n\nusort($products, function($a, $b) {\n    \/\/ \u5272\u5f15\u7387\u3092\u8a08\u7b97\n    $discount_a = ($a['original_price'] - $a['sale_price']) \/ $a['original_price'] * 100;\n    $discount_b = ($b['original_price'] - $b['sale_price']) \/ $b['original_price'] * 100;\n    \n    \/\/ \u964d\u9806\u306b\u30bd\u30fc\u30c8\n    return $discount_b &lt;=&gt; $discount_a;\n});\n\n\/\/ \u7d50\u679c: \u30bf\u30d6\u30ec\u30c3\u30c8(25%off) -&gt; \u30ce\u30fc\u30c8PC(20%off) -&gt; \u30b9\u30de\u30fc\u30c8\u30d5\u30a9\u30f3(15%off)\n<\/pre>\n\n\n\n<p><strong>\u30b1\u30fc\u30b92: \u65e5\u672c\u8a9e\u306e\u81ea\u7136\u306a\u9806\u5e8f\u3067\u30bd\u30fc\u30c8<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">$items = [\n    'item10' =&gt; '\u5546\u54c110',\n    'item2' =&gt; '\u5546\u54c12',\n    'item1' =&gt; '\u5546\u54c11'\n];\n\n\/\/ \u81ea\u7136\u9806\u30bd\u30fc\u30c8\uff08\"10\"\u304c\"2\"\u306e\u5f8c\u306b\u6765\u308b\uff09\nuksort($items, 'strnatcmp');\n\/\/ \u7d50\u679c: ['item1' =&gt; '\u5546\u54c11', 'item2' =&gt; '\u5546\u54c12', 'item10' =&gt; '\u5546\u54c110']\n\n\/\/ \u65e5\u672c\u8a9e\u6587\u5b57\u5217\u306e\u81ea\u7136\u306a\u30bd\u30fc\u30c8\n$japanese_names = ['\u9234\u672810', '\u9234\u67282', '\u7530\u4e2d5', '\u4f50\u85e41'];\nusort($japanese_names, 'strnatcmp');\n<\/pre>\n\n\n\n<p><strong>\u30b1\u30fc\u30b93: \u65e5\u4ed8\u3068\u6642\u9593\u3067\u30bd\u30fc\u30c8<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">$logs = [\n    ['event' =&gt; '\u30ed\u30b0\u30a4\u30f3', 'timestamp' =&gt; '2023-10-15 14:30:00'],\n    ['event' =&gt; '\u30d5\u30a1\u30a4\u30eb\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9', 'timestamp' =&gt; '2023-10-15 10:15:00'],\n    ['event' =&gt; '\u30d7\u30ed\u30d5\u30a3\u30fc\u30eb\u66f4\u65b0', 'timestamp' =&gt; '2023-10-16 09:45:00']\n];\n\nusort($logs, function($a, $b) {\n    return strtotime($a['timestamp']) &lt;=&gt; strtotime($b['timestamp']);\n});\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-16\">array_group\u3067\u30c7\u30fc\u30bf\u3092\u30ab\u30c6\u30b4\u30ea\u3054\u3068\u306b\u6574\u7406\u3059\u308b\u6280\u8853<\/h3>\n\n\n\n<p>PHP\u6a19\u6e96\u3067\u306f<code>array_group<\/code>\u3068\u3044\u3046\u95a2\u6570\u306f\u63d0\u4f9b\u3055\u308c\u3066\u3044\u307e\u305b\u3093\u304c\u3001\u540c\u7b49\u306e\u6a5f\u80fd\u3092\u5b9f\u88c5\u3059\u308b\u65b9\u6cd5\u304c\u3044\u304f\u3064\u304b\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>\u30ad\u30fc\u3054\u3068\u306b\u30b0\u30eb\u30fc\u30d7\u5316\u3059\u308b\u57fa\u672c\u7684\u306a\u65b9\u6cd5<\/strong>:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">$users = [\n    ['name' =&gt; '\u5c71\u7530\u592a\u90ce', 'department' =&gt; '\u55b6\u696d'],\n    ['name' =&gt; '\u4f50\u85e4\u82b1\u5b50', 'department' =&gt; '\u958b\u767a'],\n    ['name' =&gt; '\u9234\u6728\u4e00\u90ce', 'department' =&gt; '\u55b6\u696d'],\n    ['name' =&gt; '\u9ad8\u6a4b\u60a0', 'department' =&gt; '\u958b\u767a']\n];\n\n\/\/ \u90e8\u7f72\u3054\u3068\u306b\u30b0\u30eb\u30fc\u30d7\u5316\n$grouped = [];\nforeach ($users as $user) {\n    $grouped[$user['department']][] = $user;\n}\n\n\/\/ \u7d50\u679c:\n\/\/ [\n\/\/   '\u55b6\u696d' =&gt; [['name' =&gt; '\u5c71\u7530\u592a\u90ce', ...], ['name' =&gt; '\u9234\u6728\u4e00\u90ce', ...]],\n\/\/   '\u958b\u767a' =&gt; [['name' =&gt; '\u4f50\u85e4\u82b1\u5b50', ...], ['name' =&gt; '\u9ad8\u6a4b\u60a0', ...]]\n\/\/ ]\n<\/pre>\n\n\n\n<p><strong>array_reduce\u3092\u4f7f\u3063\u305f\u7c21\u6f54\u306a\u5b9f\u88c5<\/strong>:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">$grouped = array_reduce($users, function($result, $user) {\n    $result[$user['department']][] = $user;\n    return $result;\n}, []);\n<\/pre>\n\n\n\n<p><strong>\u8907\u6570\u6761\u4ef6\u3067\u30b0\u30eb\u30fc\u30d7\u5316<\/strong>:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u90e8\u7f72\u3068\u5f79\u8077\u3067\u30b0\u30eb\u30fc\u30d7\u5316\n$grouped = [];\nforeach ($users as $user) {\n    $grouped[$user['department']][$user['role']][] = $user;\n}\n<\/pre>\n\n\n\n<p><strong>\u30b0\u30eb\u30fc\u30d7\u5316\u3068\u96c6\u8a08\u3092\u7d44\u307f\u5408\u308f\u305b\u308b<\/strong>:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u90e8\u7f72\u3054\u3068\u306e\u5e73\u5747\u5e74\u9f62\u3092\u8a08\u7b97\n$department_ages = [];\nforeach ($users as $user) {\n    $dept = $user['department'];\n    if (!isset($department_ages[$dept])) {\n        $department_ages[$dept] = ['total_age' =&gt; 0, 'count' =&gt; 0];\n    }\n    $department_ages[$dept]['total_age'] += $user['age'];\n    $department_ages[$dept]['count']++;\n}\n\n$averages = [];\nforeach ($department_ages as $dept =&gt; $data) {\n    $averages[$dept] = $data['total_age'] \/ $data['count'];\n}\n<\/pre>\n\n\n\n<p>\u30bd\u30fc\u30c8\u3068\u30b0\u30eb\u30fc\u30d7\u5316\u306e\u30c6\u30af\u30cb\u30c3\u30af\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u30c7\u30fc\u30bf\u306e\u53ef\u8996\u6027\u304c\u5927\u5e45\u306b\u5411\u4e0a\u3057\u3001\u5206\u6790\u3084\u51e6\u7406\u304c\u3088\u308a\u52b9\u7387\u7684\u306b\u306a\u308a\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u5546\u54c1\u3092\u4fa1\u683c\u5e2f\u3054\u3068\u306b\u30b0\u30eb\u30fc\u30d7\u5316\u3057\u3066\u304b\u3089\u5404\u30b0\u30eb\u30fc\u30d7\u5185\u3067\u8a55\u4fa1\u9806\u306b\u30bd\u30fc\u30c8\u3059\u308b\u3068\u3044\u3063\u305f\u8907\u96d1\u306a\u6574\u7406\u3082\u7c21\u5358\u306b\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u30c6\u30af\u30cb\u30c3\u30af\u306f\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u304b\u3089\u306e\u53d6\u5f97\u7d50\u679c\u306e\u6574\u7406\u3001API\u30ec\u30b9\u30dd\u30f3\u30b9\u306e\u51e6\u7406\u3001\u30ec\u30dd\u30fc\u30c8\u751f\u6210\u306a\u3069\u3001\u591a\u304f\u306e\u5b9f\u52d9\u30b7\u30fc\u30f3\u3067\u6d3b\u8e8d\u3057\u307e\u3059\u3002\u9069\u5207\u306a\u30bd\u30fc\u30c8\u3068\u30b0\u30eb\u30fc\u30d7\u5316\u3092\u884c\u3046\u3053\u3068\u3067\u3001\u30e6\u30fc\u30b6\u30fc\u306b\u3068\u3063\u3066\u610f\u5473\u306e\u3042\u308b\u5f62\u3067\u30c7\u30fc\u30bf\u3092\u63d0\u793a\u3057\u305f\u308a\u3001\u5f8c\u7d9a\u306e\u51e6\u7406\u3092\u52b9\u7387\u5316\u3057\u305f\u308a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-17\">\u30c6\u30af\u30cb\u30c3\u30af4: \u30eb\u30fc\u30d7\u51e6\u7406\u306e\u6700\u9069\u5316 \u2013 \u9023\u60f3\u914d\u5217\u3092\u52b9\u7387\u7684\u306b\u51e6\u7406\u3059\u308b\u65b9\u6cd5<\/h2>\n\n\n\n<p>\u9023\u60f3\u914d\u5217\u3092\u6271\u3046\u969b\u306b\u907f\u3051\u3066\u901a\u308c\u306a\u3044\u306e\u304c\u30eb\u30fc\u30d7\u51e6\u7406\u3067\u3059\u3002\u7279\u306b\u5927\u91cf\u306e\u30c7\u30fc\u30bf\u3092\u542b\u3080\u9023\u60f3\u914d\u5217\u3084\u983b\u7e41\u306b\u51e6\u7406\u304c\u5b9f\u884c\u3055\u308c\u308b\u5834\u9762\u3067\u306f\u3001\u30eb\u30fc\u30d7\u51e6\u7406\u306e\u6700\u9069\u5316\u304c\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306b\u5927\u304d\u304f\u5f71\u97ff\u3057\u307e\u3059\u3002\u3053\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u9023\u60f3\u914d\u5217\u3092\u52b9\u7387\u7684\u306b\u51e6\u7406\u3059\u308b\u305f\u3081\u306e\u30c6\u30af\u30cb\u30c3\u30af\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-18\">foreach\u30eb\u30fc\u30d7\u306e\u6b63\u3057\u3044\u4f7f\u3044\u65b9\u3068\u53c2\u7167\u6e21\u3057\u306e\u6d3b\u7528\u6cd5<\/h3>\n\n\n\n<p>PHP\u3067\u9023\u60f3\u914d\u5217\u3092\u51e6\u7406\u3059\u308b\u6700\u3082\u4e00\u822c\u7684\u306a\u65b9\u6cd5\u306f<code>foreach<\/code>\u30eb\u30fc\u30d7\u3067\u3059\u3002\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\u304b\u3089\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u610f\u8b58\u3057\u305f\u9ad8\u5ea6\u306a\u30c6\u30af\u30cb\u30c3\u30af\u307e\u3067\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p><strong>\u57fa\u672c\u7684\u306aforeach\u306e\u4f7f\u3044\u65b9<\/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=\"\">$users = [\n    'user1' =&gt; ['name' =&gt; '\u5c71\u7530\u592a\u90ce', 'age' =&gt; 28],\n    'user2' =&gt; ['name' =&gt; '\u4f50\u85e4\u82b1\u5b50', 'age' =&gt; 24],\n    'user3' =&gt; ['name' =&gt; '\u9234\u6728\u4e00\u90ce', 'age' =&gt; 32]\n];\n\n\/\/ \u30ad\u30fc\u3068\u5024\u306e\u4e21\u65b9\u3092\u53d6\u5f97\nforeach ($users as $user_id =&gt; $user_data) {\n    echo \"ID: {$user_id}, \u540d\u524d: {$user_data['name']}, \u5e74\u9f62: {$user_data['age']}\\n\";\n}\n\n\/\/ \u5024\u3060\u3051\u3092\u53d6\u5f97\u3059\u308b\u5834\u5408\nforeach ($users as $user_data) {\n    echo \"\u540d\u524d: {$user_data['name']}\\n\";\n}\n<\/pre>\n\n\n\n<p><strong>\u53c2\u7167\u6e21\u3057\u3092\u4f7f\u3063\u305f\u52b9\u7387\u7684\u306a\u5024\u306e\u66f4\u65b0<\/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=\"\">\/\/ \u3059\u3079\u3066\u306e\u30e6\u30fc\u30b6\u30fc\u306e\u5e74\u9f62\u30921\u5897\u3084\u3059\nforeach ($users as &amp;$user_data) {\n    $user_data['age']++;\n}\n\/\/ \u91cd\u8981: \u53c2\u7167\u3092\u89e3\u9664\u3059\u308b\nunset($user_data);\n\n\/\/ \u53c2\u7167\u306a\u3057\u306e\u5834\u5408\u3001\u5143\u306e\u914d\u5217\u306f\u5909\u66f4\u3055\u308c\u306a\u3044\nforeach ($users as $user_data) {\n    $user_data['age']++; \/\/ \u3053\u306e\u5909\u66f4\u306f\u5143\u306e\u914d\u5217\u306b\u53cd\u6620\u3055\u308c\u306a\u3044\n}\n<\/pre>\n\n\n\n<p><strong>\u53c2\u7167\u6e21\u3057\u306e\u6ce8\u610f\u70b9<\/strong>: \u53c2\u7167\u6e21\u3057\u3092\u4f7f\u7528\u3059\u308b\u5834\u5408\u3001\u30eb\u30fc\u30d7\u7d42\u4e86\u5f8c\u306b\u53c2\u7167\u5909\u6570\u304c\u6700\u5f8c\u306e\u8981\u7d20\u3092\u6307\u3057\u305f\u307e\u307e\u306b\u306a\u308b\u3053\u3068\u306b\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002\u30eb\u30fc\u30d7\u5f8c\u306b\u5fc5\u305a<code>unset()<\/code>\u3067\u53c2\u7167\u3092\u89e3\u9664\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">$numbers = [1, 2, 3, 4];\nforeach ($numbers as &amp;$value) {\n    $value *= 2;\n}\n\/\/ $value\u306f\u4f9d\u7136\u3068\u3057\u3066\u6700\u5f8c\u306e\u8981\u7d20(8)\u3078\u306e\u53c2\u7167\u3092\u4fdd\u6301\u3057\u3066\u3044\u308b\n\n\/\/ \u3053\u306e\u6642\u70b9\u3067$value\u3092\u4f7f\u3046\u3068\u4e88\u671f\u305b\u306c\u52d5\u4f5c\u3092\u5f15\u304d\u8d77\u3053\u3059\u53ef\u80fd\u6027\u304c\u3042\u308b\necho $value; \/\/ 8\u304c\u51fa\u529b\u3055\u308c\u308b\n\n\/\/ \u53c2\u7167\u3092\u89e3\u9664\nunset($value);\n<\/pre>\n\n\n\n<p><strong>\u5165\u308c\u5b50\u306e\u30eb\u30fc\u30d7\u306b\u304a\u3051\u308b\u5909\u6570\u540d\u306e\u7ba1\u7406<\/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=\"\">$categories = [\n    'electronics' =&gt; ['PC', '\u30b9\u30de\u30fc\u30c8\u30d5\u30a9\u30f3'],\n    'furniture' =&gt; ['\u6905\u5b50', '\u30c6\u30fc\u30d6\u30eb']\n];\n\nforeach ($categories as $category_name =&gt; $items) {\n    echo \"\u30ab\u30c6\u30b4\u30ea: {$category_name}\\n\";\n    foreach ($items as $index =&gt; $item_name) {\n        \/\/ \u5185\u5074\u306e\u30eb\u30fc\u30d7\u3067\u306f\u7570\u306a\u308b\u5909\u6570\u540d\u3092\u4f7f\u7528\u3059\u308b\n        echo \"  \u5546\u54c1{$index}: {$item_name}\\n\";\n    }\n}\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-19\">\u30a4\u30c6\u30ec\u30fc\u30bf\u3092\u4f7f\u3063\u305f\u5927\u898f\u6a21\u914d\u5217\u306e\u7701\u30e1\u30e2\u30ea\u51e6\u7406<\/h3>\n\n\n\n<p>\u5927\u898f\u6a21\u306a\u9023\u60f3\u914d\u5217\u3092\u51e6\u7406\u3059\u308b\u5834\u5408\u3001\u6a19\u6e96\u306e\u30eb\u30fc\u30d7\u51e6\u7406\u3067\u306f\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u304c\u554f\u984c\u306b\u306a\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002PHP\u306eSPL\uff08Standard PHP Library\uff09\u30a4\u30c6\u30ec\u30fc\u30bf\u3092\u4f7f\u3046\u3068\u3001\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u3092\u6291\u3048\u3064\u3064\u52b9\u7387\u7684\u306b\u51e6\u7406\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>ArrayIterator\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9<\/strong>:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u5927\u304d\u306a\u914d\u5217\u304c\u3042\u308b\u3068\u4eee\u5b9a\n$large_array = range(1, 10000);\n\n\/\/ ArrayIterator\u3092\u4f7f\u7528\n$iterator = new ArrayIterator($large_array);\n\nforeach ($iterator as $key =&gt; $value) {\n    \/\/ \u51e6\u7406...\n    \/\/ \u5fc5\u8981\u306b\u5fdc\u3058\u3066break\/continue\u3082\u4f7f\u7528\u53ef\u80fd\n}\n<\/pre>\n\n\n\n<p><strong>FilterIterator\u3067\u6761\u4ef6\u306b\u5408\u3046\u8981\u7d20\u3060\u3051\u3092\u51e6\u7406<\/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=\"\">\/\/ FilterIterator\u3092\u62e1\u5f35\u3057\u305f\u30ab\u30b9\u30bf\u30e0\u30af\u30e9\u30b9\nclass EvenNumbersIterator extends FilterIterator {\n    public function accept() {\n        return $this-&gt;current() % 2 === 0;\n    }\n}\n\n$numbers = new ArrayIterator(range(1, 100));\n$even_numbers = new EvenNumbersIterator($numbers);\n\nforeach ($even_numbers as $number) {\n    echo $number . \"\\n\"; \/\/ \u5076\u6570\u3060\u3051\u304c\u51e6\u7406\u3055\u308c\u308b\n}\n<\/pre>\n\n\n\n<p><strong>\u30b8\u30a7\u30cd\u30ec\u30fc\u30bf\u95a2\u6570\u3092\u4f7f\u3063\u305f\u7701\u30e1\u30e2\u30ea\u51e6\u7406<\/strong>:<\/p>\n\n\n\n<p>PHP 5.5\u4ee5\u964d\u3067\u306f\u3001\u30b8\u30a7\u30cd\u30ec\u30fc\u30bf\u95a2\u6570\u3092\u4f7f\u3046\u3053\u3068\u3067\u3001\u3055\u3089\u306b\u52b9\u7387\u7684\u306a\u30e1\u30e2\u30ea\u51e6\u7406\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u5927\u304d\u306a\u9023\u60f3\u914d\u5217\u3092\u52b9\u7387\u7684\u306b\u51e6\u7406\u3059\u308b\u30b8\u30a7\u30cd\u30ec\u30fc\u30bf\u95a2\u6570\nfunction processLargeArray($array) {\n    foreach ($array as $key =&gt; $value) {\n        \/\/ \u91cd\u3044\u51e6\u7406\u3084\u5909\u63db\u3092\u3053\u3053\u3067\u884c\u3046\n        $processed_value = doSomeHeavyProcessing($value);\n        yield $key =&gt; $processed_value;\n    }\n}\n\n\/\/ \u4f7f\u7528\u4f8b\n$large_data = \/* \u975e\u5e38\u306b\u5927\u304d\u306a\u9023\u60f3\u914d\u5217 *\/;\nforeach (processLargeArray($large_data) as $key =&gt; $processed) {\n    echo \"\u51e6\u7406\u7d50\u679c: {$key} =&gt; {$processed}\\n\";\n    \/\/ \u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u304c\u5c11\u306a\u3044\u72b6\u614b\u30671\u3064\u305a\u3064\u51e6\u7406\u3055\u308c\u308b\n}\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-20\">\u30eb\u30fc\u30d7\u5185\u3067\u306e\u30ad\u30fc\u3068\u5024\u306e\u53d6\u308a\u6271\u3044\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/h3>\n\n\n\n<p>\u9023\u60f3\u914d\u5217\u306e\u30eb\u30fc\u30d7\u51e6\u7406\u3092\u6700\u9069\u5316\u3059\u308b\u305f\u3081\u306e\u5b9f\u8df5\u7684\u306a\u30c6\u30af\u30cb\u30c3\u30af\u3092\u3044\u304f\u3064\u304b\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>\u30eb\u30fc\u30d7\u5185\u3067\u983b\u7e41\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u5024\u3092\u30ad\u30e3\u30c3\u30b7\u30e5\u3059\u308b<\/strong>:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">foreach ($products as $product) {\n    \/\/ \u30d0\u30c3\u30c9\u30d7\u30e9\u30af\u30c6\u30a3\u30b9: \u30eb\u30fc\u30d7\u5185\u3067\u4f55\u5ea6\u3082\u540c\u3058\u8a08\u7b97\u3092\u5b9f\u884c\n    for ($i = 0; $i &lt; count($product['options']); $i++) {\n        \/\/ count()\u304c\u6bce\u56de\u5b9f\u884c\u3055\u308c\u308b\n    }\n    \n    \/\/ \u30b0\u30c3\u30c9\u30d7\u30e9\u30af\u30c6\u30a3\u30b9: \u8a08\u7b97\u7d50\u679c\u3092\u30ad\u30e3\u30c3\u30b7\u30e5\n    $options_count = count($product['options']);\n    for ($i = 0; $i &lt; $options_count; $i++) {\n        \/\/ count()\u306f1\u56de\u3060\u3051\u5b9f\u884c\u3055\u308c\u308b\n    }\n}\n<\/pre>\n\n\n\n<p><strong>\u65e9\u671f\u30ea\u30bf\u30fc\u30f3\u30d1\u30bf\u30fc\u30f3\u3067\u4e0d\u8981\u306a\u51e6\u7406\u3092\u30b9\u30ad\u30c3\u30d7<\/strong>:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">foreach ($users as $user) {\n    \/\/ \u6761\u4ef6\u306b\u5408\u308f\u306a\u3044\u5834\u5408\u306f\u65e9\u671f\u306b\u30b9\u30ad\u30c3\u30d7\n    if (!$user['is_active']) {\n        continue;\n    }\n    \n    \/\/ \u30a2\u30af\u30c6\u30a3\u30d6\u30e6\u30fc\u30b6\u30fc\u306e\u51e6\u7406\uff08\u3053\u306e\u30d6\u30ed\u30c3\u30af\u304c\u77ed\u304f\u306a\u308b\uff09\n    \/\/ ...\n}\n<\/pre>\n\n\n\n<p><strong>\u30eb\u30fc\u30d7\u306e\u6700\u9069\u306a\u7d42\u4e86<\/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=\"\">\/\/ \u7279\u5b9a\u306e\u6761\u4ef6\u3067\u51e6\u7406\u3092\u5b8c\u5168\u306b\u7d42\u4e86\nforeach ($items as $item) {\n    if ($item['is_match']) {\n        $result = $item;\n        break; \/\/ \u898b\u3064\u304b\u3063\u305f\u3089\u5373\u5ea7\u306b\u30eb\u30fc\u30d7\u3092\u629c\u3051\u308b\n    }\n}\n\n\/\/ \u7279\u5b9a\u306e\u6570\u3060\u3051\u51e6\u7406\u3059\u308b\n$count = 0;\n$limit = 10;\nforeach ($large_dataset as $data) {\n    process($data);\n    $count++;\n    \n    if ($count &gt;= $limit) {\n        break;\n    }\n}\n<\/pre>\n\n\n\n<p><strong>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u610f\u8b58\u3057\u305f\u30eb\u30fc\u30d7\u306e\u9078\u629e<\/strong>:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u5358\u7d14\u306b\u5168\u8981\u7d20\u3092\u51e6\u7406\u3059\u308b\u5834\u5408\nforeach ($array as $value) {\n    \/\/ \u51e6\u7406...\n}\n\n\/\/ \u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u304c\u5fc5\u8981\u306a\u5834\u5408\nforeach ($array as $key =&gt; $value) {\n    \/\/ \u30ad\u30fc\u3092\u4f7f\u3063\u305f\u51e6\u7406...\n}\n\n\/\/ \u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u914d\u5217\u3067\u6dfb\u5b57\u304c\u9023\u7d9a\u3059\u308b\u5834\u5408\u306ffor\u6587\u3082\u52b9\u7387\u7684\nfor ($i = 0; $i &lt; count($array); $i++) {\n    \/\/ \u51e6\u7406...\n}\n\n\/\/ \u3088\u308a\u52b9\u7387\u7684\u306afor\u6587\uff08count()\u30921\u56de\u3060\u3051\u547c\u3073\u51fa\u3059\uff09\n$length = count($array);\nfor ($i = 0; $i &lt; $length; $i++) {\n    \/\/ \u51e6\u7406...\n}\n<\/pre>\n\n\n\n<p>\u9023\u60f3\u914d\u5217\u306e\u30eb\u30fc\u30d7\u51e6\u7406\u3092\u6700\u9069\u5316\u3059\u308b\u3053\u3068\u3067\u3001\u7279\u306b\u5927\u898f\u6a21\u306a\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u3084\u9ad8\u8ca0\u8377\u306a\u74b0\u5883\u3067\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u5411\u4e0a\u3057\u307e\u3059\u3002\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u306e\u524a\u6e1b\u3001\u51e6\u7406\u6642\u9593\u306e\u77ed\u7e2e\u3001\u30b3\u30fc\u30c9\u306e\u53ef\u8aad\u6027\u5411\u4e0a\u306a\u3069\u3001\u69d8\u3005\u306a\u6069\u6075\u3092\u5f97\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3067\u3057\u3087\u3046\u3002\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u3053\u308c\u3089\u306e\u30eb\u30fc\u30d7\u30c6\u30af\u30cb\u30c3\u30af\u3092\u5fdc\u7528\u3057\u305f\u30c7\u30fc\u30bf\u691c\u8a3c\u3068\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u306b\u3064\u3044\u3066\u898b\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-21\">\u30c6\u30af\u30cb\u30c3\u30af5: \u9023\u60f3\u914d\u5217\u3092\u4f7f\u3063\u305f\u30c7\u30fc\u30bf\u691c\u8a3c\u3068\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0<\/h2>\n\n\n\n<p>\u9023\u60f3\u914d\u5217\u3092\u6271\u3046\u4e0a\u3067\u907f\u3051\u3066\u901a\u308c\u306a\u3044\u306e\u304c\u3001\u30c7\u30fc\u30bf\u691c\u8a3c\u3068\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u3067\u3059\u3002\u7279\u306b\u30e6\u30fc\u30b6\u30fc\u5165\u529b\u3084API\u304b\u3089\u306e\u30c7\u30fc\u30bf\u306a\u3069\u3001\u5916\u90e8\u304b\u3089\u53d6\u5f97\u3057\u305f\u60c5\u5831\u3092\u9023\u60f3\u914d\u5217\u3067\u51e6\u7406\u3059\u308b\u969b\u306b\u306f\u3001\u5805\u7262\u306a\u30a8\u30e9\u30fc\u30c1\u30a7\u30c3\u30af\u304c\u4e0d\u53ef\u6b20\u3067\u3059\u3002\u9069\u5207\u306a\u30c7\u30fc\u30bf\u691c\u8a3c\u3068\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u3092\u5b9f\u88c5\u3059\u308b\u3053\u3068\u3067\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u5b89\u5b9a\u6027\u3068\u4fe1\u983c\u6027\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-22\">isset()\u3068empty()\u3092\u4f7f\u3063\u305f\u5805\u7262\u306a\u30c7\u30fc\u30bf\u691c\u8a3c\u65b9\u6cd5<\/h3>\n\n\n\n<p>PHP\u3067\u306f\u3001<code>isset()<\/code>\u3068<code>empty()<\/code>\u95a2\u6570\u3092\u4f7f\u3063\u3066\u30c7\u30fc\u30bf\u306e\u5b58\u5728\u3068\u5185\u5bb9\u3092\u691c\u8a3c\u3059\u308b\u306e\u304c\u4e00\u822c\u7684\u3067\u3059\u3002\u3053\u308c\u3089\u306e\u95a2\u6570\u306e\u9055\u3044\u3068\u4f7f\u3044\u5206\u3051\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<p><strong>isset()\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9<\/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=\"\">\/\/ \u30e6\u30fc\u30b6\u30fc\u304b\u3089\u306e\u5165\u529b\u30c7\u30fc\u30bf\n$input = [\n    'name' =&gt; '\u5c71\u7530\u592a\u90ce',\n    'email' =&gt; 'yamada@example.com',\n    \/\/ age\u306f\u542b\u307e\u308c\u3066\u3044\u306a\u3044\n];\n\n\/\/ \u30ad\u30fc\u306e\u5b58\u5728\u78ba\u8a8d\nif (isset($input['name'])) {\n    echo \"\u540d\u524d: {$input['name']}\\n\";\n} else {\n    echo \"\u540d\u524d\u304c\u5165\u529b\u3055\u308c\u3066\u3044\u307e\u305b\u3093\\n\";\n}\n\n\/\/ \u8907\u6570\u306e\u30ad\u30fc\u3092\u4e00\u5ea6\u306b\u78ba\u8a8d\nif (isset($input['name'], $input['email'], $input['age'])) {\n    \/\/ \u3059\u3079\u3066\u306e\u30ad\u30fc\u304c\u5b58\u5728\u3059\u308b\u5834\u5408\u306e\u51e6\u7406\n} else {\n    \/\/ \u5c11\u306a\u304f\u3068\u30821\u3064\u306e\u30ad\u30fc\u304c\u5b58\u5728\u3057\u306a\u3044\n}\n<\/pre>\n\n\n\n<p><strong>empty()\u306e\u4f7f\u3044\u65b9\u3068\u7528\u9014<\/strong>:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30d5\u30a9\u30fc\u30e0\u30c7\u30fc\u30bf\n$form = [\n    'name' =&gt; '\u5c71\u7530\u592a\u90ce',\n    'comment' =&gt; '',  \/\/ \u7a7a\u306e\u6587\u5b57\u5217\n    'age' =&gt; 0,       \/\/ \u6570\u5024\u306e0\n    'address' =&gt; null \/\/ NULL\u5024\n];\n\n\/\/ \u5024\u304c\u7a7a\u304b\u3069\u3046\u304b\u3092\u30c1\u30a7\u30c3\u30af\nif (empty($form['comment'])) {\n    echo \"\u30b3\u30e1\u30f3\u30c8\u304c\u5165\u529b\u3055\u308c\u3066\u3044\u307e\u305b\u3093\\n\";\n}\n\n\/\/ \u6ce8\u610f: empty()\u306f\u300c0\u300d\u3084\u300c'0'\u300d\u3082\u7a7a\u3068\u5224\u65ad\u3059\u308b\nif (empty($form['age'])) {\n    echo \"\u5e74\u9f62\u304c\u5165\u529b\u3055\u308c\u3066\u3044\u307e\u305b\u3093\\n\"; \/\/ 0\u304c\u5165\u529b\u3055\u308c\u3066\u3044\u3066\u3082\u8868\u793a\u3055\u308c\u308b\n}\n<\/pre>\n\n\n\n<p><strong>isset()\u3068empty()\u306e\u9069\u5207\u306a\u7d44\u307f\u5408\u308f\u305b<\/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=\"\">\/\/ \u7406\u60f3\u7684\u306a\u691c\u8a3c\u30d1\u30bf\u30fc\u30f3\nfunction validateField($array, $key, $options = []) {\n    \/\/ \u30ad\u30fc\u304c\u5b58\u5728\u3059\u308b\u304b\u78ba\u8a8d\n    if (!isset($array[$key])) {\n        return \"\u300c{$key}\u300d\u304c\u5165\u529b\u3055\u308c\u3066\u3044\u307e\u305b\u3093\";\n    }\n    \n    \/\/ \u7a7a\u3067\u306a\u3044\u3053\u3068\u3092\u78ba\u8a8d(0\u306a\u3069\u306e\u6709\u52b9\u306a\u5024\u3092\u8003\u616e)\n    if (empty($array[$key]) &amp;&amp; $array[$key] !== 0 &amp;&amp; $array[$key] !== '0') {\n        return \"\u300c{$key}\u300d\u304c\u7a7a\u3067\u3059\";\n    }\n    \n    \/\/ \u305d\u306e\u4ed6\u306e\u691c\u8a3c\u30eb\u30fc\u30eb\uff08\u6700\u5c0f\u9577\u3001\u6700\u5927\u9577\u306a\u3069\uff09\n    if (isset($options['min_length']) &amp;&amp; strlen($array[$key]) &lt; $options['min_length']) {\n        return \"\u300c{$key}\u300d\u306f{$options['min_length']}\u6587\u5b57\u4ee5\u4e0a\u5fc5\u8981\u3067\u3059\";\n    }\n    \n    return null; \/\/ \u30a8\u30e9\u30fc\u306a\u3057\n}\n\n\/\/ \u4f7f\u7528\u4f8b\n$errors = [];\n$error = validateField($input, 'name', ['min_length' =&gt; 2]);\nif ($error) $errors[] = $error;\n<\/pre>\n\n\n\n<p><strong>array_key_exists()\u3068isset()\u306e\u9055\u3044<\/strong>:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">$data = [\n    'key1' =&gt; 'value1',\n    'key2' =&gt; null\n];\n\n\/\/ array_key_exists()\u306f\u30ad\u30fc\u306e\u5b58\u5728\u306e\u307f\u3092\u78ba\u8a8d(\u5024\u304cNULL\u3067\u3082true)\nvar_dump(array_key_exists('key2', $data)); \/\/ true\n\n\/\/ isset()\u306f\u30ad\u30fc\u304c\u5b58\u5728\u3057\u3001\u5024\u304cNULL\u3067\u306a\u3044\u5834\u5408\u306btrue\nvar_dump(isset($data['key2'])); \/\/ false\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-23\">null\u30bb\u30fc\u30d5\u306a\u30a2\u30af\u30bb\u30b9\u65b9\u6cd5\u3068\u5b58\u5728\u3057\u306a\u3044\u30ad\u30fc\u3078\u306e\u5bfe\u51e6\u6cd5<\/h3>\n\n\n\n<p>PHP 7\u4ee5\u964d\u3067\u306f\u3001null\u30bb\u30fc\u30d5\u306a\u30a2\u30af\u30bb\u30b9\u3092\u5b9f\u73fe\u3059\u308b\u305f\u3081\u306e\u65b0\u3057\u3044\u6f14\u7b97\u5b50\u304c\u5c0e\u5165\u3055\u308c\u307e\u3057\u305f\u3002\u3053\u308c\u3089\u3092\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u9023\u60f3\u914d\u5217\u3078\u306e\u30a2\u30af\u30bb\u30b9\u304c\u3088\u308a\u5b89\u5168\u304b\u3064\u7c21\u6f54\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>Null\u5408\u4f53\u6f14\u7b97\u5b50(??)\u306e\u6d3b\u7528<\/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=\"\">\/\/ PHP 7.0\u4ee5\u964d\u3067\u4f7f\u7528\u53ef\u80fd\n$user = [\n    'name' =&gt; '\u5c71\u7530\u592a\u90ce',\n    \/\/ email\u306f\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u306a\u3044\n];\n\n\/\/ \u5f93\u6765\u306e\u65b9\u6cd5\n$email = isset($user['email']) ? $user['email'] : '\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306a\u3057';\n\n\/\/ Null\u5408\u4f53\u6f14\u7b97\u5b50\u3092\u4f7f\u7528\n$email = $user['email'] ?? '\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306a\u3057';\n\n\/\/ \u8907\u6570\u306e\u30d5\u30a9\u30fc\u30eb\u30d0\u30c3\u30af\n$contact = $user['email'] ?? $user['phone'] ?? $user['address'] ?? '\u9023\u7d61\u5148\u306a\u3057';\n<\/pre>\n\n\n\n<p><strong>\u591a\u6b21\u5143\u914d\u5217\u3067\u306e\u5b89\u5168\u306a\u30a2\u30af\u30bb\u30b9<\/strong>:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u8907\u96d1\u306a\u591a\u6b21\u5143\u914d\u5217\n$config = [\n    'database' =&gt; [\n        'main' =&gt; [\n            'host' =&gt; 'localhost',\n            'user' =&gt; 'root'\n            \/\/ password\u306f\u672a\u5b9a\u7fa9\n        ]\n    ]\n];\n\n\/\/ \u5f93\u6765\u306e\u65b9\u6cd5\uff08\u9577\u304f\u3066\u8aad\u307f\u306b\u304f\u3044\uff09\n$password = isset($config['database']['main']['password']) \n    ? $config['database']['main']['password'] \n    : '\u30c7\u30d5\u30a9\u30eb\u30c8\u30d1\u30b9\u30ef\u30fc\u30c9';\n\n\/\/ Null\u5408\u4f53\u6f14\u7b97\u5b50\u3092\u4f7f\u7528\uff08\u3088\u308a\u7c21\u6f54\uff09\n$password = $config['database']['main']['password'] ?? '\u30c7\u30d5\u30a9\u30eb\u30c8\u30d1\u30b9\u30ef\u30fc\u30c9';\n\n\/\/ \u5b58\u5728\u3057\u306a\u3044\u53ef\u80fd\u6027\u306e\u3042\u308b\u4e2d\u9593\u30ad\u30fc\u3092\u5b89\u5168\u306b\u30a2\u30af\u30bb\u30b9\n$backup_host = ($config['database']['backup'] ?? [])['host'] ?? '\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u306a\u3057';\n<\/pre>\n\n\n\n<p><strong>\u30ab\u30b9\u30bf\u30e0\u30d8\u30eb\u30d1\u30fc\u95a2\u6570\u306e\u4f5c\u6210<\/strong>:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u591a\u6b21\u5143\u914d\u5217\u304b\u3089\u5b89\u5168\u306b\u5024\u3092\u53d6\u5f97\u3059\u308b\u30d8\u30eb\u30d1\u30fc\u95a2\u6570\nfunction array_get($array, $key, $default = null) {\n    $keys = explode('.', $key);\n    $result = $array;\n    \n    foreach ($keys as $segment) {\n        if (!is_array($result) || !array_key_exists($segment, $result)) {\n            return $default;\n        }\n        $result = $result[$segment];\n    }\n    \n    return $result;\n}\n\n\/\/ \u4f7f\u7528\u4f8b\n$db_host = array_get($config, 'database.main.host', 'localhost');\n$backup_user = array_get($config, 'database.backup.user', 'guest');\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-24\">try-catch\u30d6\u30ed\u30c3\u30af\u3068\u7d44\u307f\u5408\u308f\u305b\u305f\u5b89\u5168\u306a\u914d\u5217\u64cd\u4f5c<\/h3>\n\n\n\n<p>\u7279\u5b9a\u306e\u72b6\u6cc1\u3067\u306f\u3001\u4f8b\u5916\u51e6\u7406\u3092\u4f7f\u3063\u3066\u9023\u60f3\u914d\u5217\u306e\u30a8\u30e9\u30fc\u3092\u7ba1\u7406\u3059\u308b\u3053\u3068\u304c\u52b9\u679c\u7684\u3067\u3059\u3002\u7279\u306b\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u3088\u3046\u306b\u3075\u308b\u307e\u3046\u9023\u60f3\u914d\u5217\u3084\u3001\u81f4\u547d\u7684\u306a\u30a8\u30e9\u30fc\u3092\u691c\u51fa\u3057\u305f\u3044\u5834\u5408\u306b\u6709\u7528\u3067\u3059\u3002<\/p>\n\n\n\n<p><strong>ArrayAccess\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3068\u4f8b\u5916\u51e6\u7406<\/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=\"\">class SafeArray implements ArrayAccess {\n    private $data = [];\n    \n    public function offsetExists($offset): bool {\n        return isset($this-&gt;data[$offset]);\n    }\n    \n    public function offsetGet($offset): mixed {\n        if (!$this-&gt;offsetExists($offset)) {\n            throw new Exception(\"\u30ad\u30fc '{$offset}' \u304c\u5b58\u5728\u3057\u307e\u305b\u3093\");\n        }\n        return $this-&gt;data[$offset];\n    }\n    \n    public function offsetSet($offset, $value): void {\n        $this-&gt;data[$offset] = $value;\n    }\n    \n    public function offsetUnset($offset): void {\n        unset($this-&gt;data[$offset]);\n    }\n}\n\n\/\/ \u4f7f\u7528\u4f8b\n$safe = new SafeArray();\n$safe['key1'] = 'value1';\n\ntry {\n    $value = $safe['key2']; \/\/ \u5b58\u5728\u3057\u306a\u3044\u30ad\u30fc\n} catch (Exception $e) {\n    echo \"\u30a8\u30e9\u30fc: \" . $e-&gt;getMessage();\n}\n<\/pre>\n\n\n\n<p><strong>\u30c7\u30fc\u30bf\u5909\u63db\u6642\u306e\u4f8b\u5916\u51e6\u7406<\/strong>:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">function convertUserData($input) {\n    try {\n        if (!isset($input['user_id'])) {\n            throw new InvalidArgumentException('\u30e6\u30fc\u30b6\u30fcID\u306f\u5fc5\u9808\u3067\u3059');\n        }\n        \n        $age = isset($input['age']) ? (int)$input['age'] : null;\n        if ($age !== null &amp;&amp; ($age &lt; 0 || $age &gt; 120)) {\n            throw new RangeException('\u5e74\u9f62\u306e\u5024\u304c\u4e0d\u6b63\u3067\u3059');\n        }\n        \n        return [\n            'id' =&gt; $input['user_id'],\n            'name' =&gt; $input['name'] ?? '\u540d\u524d\u306a\u3057',\n            'age' =&gt; $age\n        ];\n    } catch (Exception $e) {\n        \/\/ \u30a8\u30e9\u30fc\u30ed\u30b0\u306b\u8a18\u9332\n        error_log('\u30c7\u30fc\u30bf\u5909\u63db\u30a8\u30e9\u30fc: ' . $e-&gt;getMessage());\n        \/\/ \u30a8\u30e9\u30fc\u3092\u4e0a\u4f4d\u306b\u4f1d\u64ad\u3059\u308b\u304b\u3001\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u3092\u8fd4\u3059\n        return ['error' =&gt; $e-&gt;getMessage()];\n    }\n}\n<\/pre>\n\n\n\n<p><strong>\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u7684\u306a\u914d\u5217\u64cd\u4f5c<\/strong>:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">function updateUserProfile($userId, $newData) {\n    global $users; \/\/ \u5b9f\u969b\u306f\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306a\u3069\n    \n    \/\/ \u5143\u306e\u30c7\u30fc\u30bf\u3092\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\n    $backup = $users[$userId] ?? null;\n    \n    try {\n        \/\/ \u5024\u306e\u691c\u8a3c\n        if (isset($newData['email']) &amp;&amp; !filter_var($newData['email'], FILTER_VALIDATE_EMAIL)) {\n            throw new InvalidArgumentException('\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306e\u5f62\u5f0f\u304c\u4e0d\u6b63\u3067\u3059');\n        }\n        \n        \/\/ \u30c7\u30fc\u30bf\u66f4\u65b0\n        if (!isset($users[$userId])) {\n            $users[$userId] = [];\n        }\n        foreach ($newData as $key =&gt; $value) {\n            $users[$userId][$key] = $value;\n        }\n        \n        return true;\n    } catch (Exception $e) {\n        \/\/ \u30a8\u30e9\u30fc\u767a\u751f\u6642\u306b\u5143\u306e\u72b6\u614b\u306b\u623b\u3059\n        if ($backup !== null) {\n            $users[$userId] = $backup;\n        } else {\n            unset($users[$userId]);\n        }\n        throw $e; \/\/ \u4e0a\u4f4d\u3067\u51e6\u7406\u3067\u304d\u308b\u3088\u3046\u518d\u30b9\u30ed\u30fc\n    }\n}\n<\/pre>\n\n\n\n<p>\u9069\u5207\u306a\u30c7\u30fc\u30bf\u691c\u8a3c\u3068\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u3092\u5b9f\u88c5\u3059\u308b\u3053\u3068\u3067\u3001\u9023\u60f3\u914d\u5217\u3092\u4f7f\u3063\u305f\u30b3\u30fc\u30c9\u306e\u5805\u7262\u6027\u304c\u5927\u5e45\u306b\u5411\u4e0a\u3057\u307e\u3059\u3002\u7279\u306b\u30e6\u30fc\u30b6\u30fc\u5165\u529b\u3084API\u30c7\u30fc\u30bf\u306a\u3069\u3001\u4fe1\u983c\u3067\u304d\u306a\u3044\u5916\u90e8\u30bd\u30fc\u30b9\u304b\u3089\u306e\u30c7\u30fc\u30bf\u3092\u6271\u3046\u5834\u5408\u306b\u306f\u5fc5\u9808\u306e\u5bfe\u7b56\u3067\u3059\u3002\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u9023\u60f3\u914d\u5217\u3068\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u9023\u643a\u306b\u3064\u3044\u3066\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-25\">\u30c6\u30af\u30cb\u30c3\u30af6: \u9023\u60f3\u914d\u5217\u3068\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u9023\u643a \u2013 \u30e2\u30c0\u30f3PHP\u3067\u306e\u6d3b\u7528\u6cd5<\/h2>\n\n\n\n<p>PHP\u306f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\u3067\u3042\u308a\u306a\u304c\u3089\u3001\u9023\u60f3\u914d\u5217\u3068\u3044\u3046\u5f37\u529b\u306a\u6a5f\u80fd\u3092\u6301\u3063\u3066\u3044\u307e\u3059\u3002\u30e2\u30c0\u30f3PHP\u306e\u958b\u767a\u73fe\u5834\u3067\u306f\u3001\u9023\u60f3\u914d\u5217\u3068\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u72b6\u6cc1\u306b\u5fdc\u3058\u3066\u4f7f\u3044\u5206\u3051\u305f\u308a\u3001\u4e92\u3044\u306b\u5909\u63db\u3057\u305f\u308a\u3059\u308b\u5834\u9762\u304c\u983b\u7e41\u306b\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u4e21\u8005\u3092\u52b9\u679c\u7684\u306b\u9023\u643a\u3055\u305b\u308b\u30c6\u30af\u30cb\u30c3\u30af\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-26\">\u9023\u60f3\u914d\u5217\u3068\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u76f8\u4e92\u5909\u63db\u30c6\u30af\u30cb\u30c3\u30af<\/h3>\n\n\n\n<p>\u9023\u60f3\u914d\u5217\u3068\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306f\u4e92\u3044\u306b\u7c21\u5358\u306b\u5909\u63db\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u3063\u3066\u3001\u72b6\u6cc1\u306b\u5fdc\u3058\u305f\u6700\u9069\u306a\u30c7\u30fc\u30bf\u64cd\u4f5c\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>\u9023\u60f3\u914d\u5217\u304b\u3089\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\uff08stdClass\uff09\u3078\u306e\u5909\u63db<\/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=\"\">\/\/ \u9023\u60f3\u914d\u5217\n$userArray = [\n    'id' =&gt; 1001,\n    'name' =&gt; '\u5c71\u7530\u592a\u90ce',\n    'email' =&gt; 'yamada@example.com',\n    'roles' =&gt; ['editor', 'admin']\n];\n\n\/\/ (object) \u30ad\u30e3\u30b9\u30c8\u3067\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u5909\u63db\n$userObject = (object) $userArray;\n\n\/\/ \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3068\u3057\u3066\u30a2\u30af\u30bb\u30b9\necho $userObject-&gt;name; \/\/ '\u5c71\u7530\u592a\u90ce'\u3068\u51fa\u529b\necho $userObject-&gt;roles[0]; \/\/ 'editor'\u3068\u51fa\u529b\n<\/pre>\n\n\n\n<p><strong>\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304b\u3089\u9023\u60f3\u914d\u5217\u3078\u306e\u5909\u63db<\/strong>:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ stdClass\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\n$productObj = new stdClass();\n$productObj-&gt;id = 'A001';\n$productObj-&gt;name = '\u30ce\u30fc\u30c8PC';\n$productObj-&gt;price = 80000;\n\n\/\/ (array) \u30ad\u30e3\u30b9\u30c8\u3067\u9023\u60f3\u914d\u5217\u306b\u5909\u63db\n$productArray = (array) $productObj;\n\n\/\/ \u914d\u5217\u3068\u3057\u3066\u30a2\u30af\u30bb\u30b9\necho $productArray['name']; \/\/ '\u30ce\u30fc\u30c8PC'\u3068\u51fa\u529b\n<\/pre>\n\n\n\n<p><strong>\u6df1\u304f\u30cd\u30b9\u30c8\u3057\u305f\u30c7\u30fc\u30bf\u69cb\u9020\u306e\u5909\u63db<\/strong>:<\/p>\n\n\n\n<p>\u5358\u7d14\u306a\u30ad\u30e3\u30b9\u30c8\u3067\u306f1\u968e\u5c64\u3057\u304b\u5909\u63db\u3055\u308c\u306a\u3044\u305f\u3081\u3001\u8907\u96d1\u306a\u30c7\u30fc\u30bf\u69cb\u9020\u3092\u5b8c\u5168\u306b\u5909\u63db\u3059\u308b\u306b\u306f\u518d\u5e30\u7684\u306a\u51e6\u7406\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u518d\u5e30\u7684\u306b\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u9023\u60f3\u914d\u5217\u306b\u5909\u63db\u3059\u308b\u95a2\u6570\nfunction objectToArray($obj) {\n    if (is_object($obj)) {\n        $obj = (array) $obj;\n    }\n    \n    if (is_array($obj)) {\n        $result = [];\n        foreach ($obj as $key =&gt; $value) {\n            \/\/ \u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u30d7\u30ed\u30d1\u30c6\u30a3\u306e\u30ad\u30fc\u540d\u3092\u4fee\u6b63\n            if (is_string($key) &amp;&amp; $key[0] === \"\\0\") {\n                $parts = explode(\"\\0\", $key);\n                $key = end($parts);\n            }\n            $result[$key] = objectToArray($value);\n        }\n        return $result;\n    }\n    \n    return $obj;\n}\n\n\/\/ \u518d\u5e30\u7684\u306b\u9023\u60f3\u914d\u5217\u3092\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u5909\u63db\u3059\u308b\u95a2\u6570\nfunction arrayToObject($array) {\n    if (is_array($array)) {\n        $obj = new stdClass();\n        foreach ($array as $key =&gt; $value) {\n            $obj-&gt;$key = arrayToObject($value);\n        }\n        return $obj;\n    }\n    \n    return $array;\n}\n<\/pre>\n\n\n\n<p><strong>\u30af\u30e9\u30b9\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3068\u9023\u60f3\u914d\u5217\u306e\u5909\u63db<\/strong>:<\/p>\n\n\n\n<p>\u30ab\u30b9\u30bf\u30e0\u30af\u30e9\u30b9\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u9023\u60f3\u914d\u5217\u306b\u5909\u63db\u3059\u308b\u5834\u5408\u3001protected\/private\u30d7\u30ed\u30d1\u30c6\u30a3\u306f\u7279\u5225\u306a\u51e6\u7406\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class User {\n    public $id;\n    public $name;\n    protected $email;\n    private $password;\n    \n    public function __construct($data = []) {\n        $this-&gt;id = $data['id'] ?? null;\n        $this-&gt;name = $data['name'] ?? '';\n        $this-&gt;email = $data['email'] ?? '';\n        $this-&gt;password = $data['password'] ?? '';\n    }\n    \n    \/\/ public\u30d7\u30ed\u30d1\u30c6\u30a3\u3060\u3051\u3092\u9023\u60f3\u914d\u5217\u3068\u3057\u3066\u8fd4\u3059\n    public function toArray() {\n        return [\n            'id' =&gt; $this-&gt;id,\n            'name' =&gt; $this-&gt;name,\n            'email' =&gt; $this-&gt;email\n            \/\/ password\u306f\u610f\u56f3\u7684\u306b\u9664\u5916\n        ];\n    }\n}\n\n\/\/ \u4f7f\u7528\u4f8b\n$user = new User([\n    'id' =&gt; 1,\n    'name' =&gt; '\u9234\u6728\u4e00\u90ce',\n    'email' =&gt; 'suzuki@example.com',\n    'password' =&gt; 'secret123'\n]);\n\n$userData = $user-&gt;toArray();\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-27\">json_encode\/json_decode\u3092\u6d3b\u7528\u3057\u305f\u30b7\u30ea\u30a2\u30e9\u30a4\u30ba\u624b\u6cd5<\/h3>\n\n\n\n<p>JSON\u30a8\u30f3\u30b3\u30fc\u30c9\/\u30c7\u30b3\u30fc\u30c9\u306f\u3001\u9023\u60f3\u914d\u5217\u3068\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u76f8\u4e92\u5909\u63db\u306b\u4fbf\u5229\u306a\u3060\u3051\u3067\u306a\u304f\u3001\u30c7\u30fc\u30bf\u306e\u6c38\u7d9a\u5316\u3084\u901a\u4fe1\u306b\u3082\u6d3b\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>\u9023\u60f3\u914d\u5217\u306eJSON\u30b7\u30ea\u30a2\u30e9\u30a4\u30ba\u3068\u30c7\u30b7\u30ea\u30a2\u30e9\u30a4\u30ba<\/strong>:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u9023\u60f3\u914d\u5217\n$data = [\n    'settings' =&gt; [\n        'theme' =&gt; 'dark',\n        'notifications' =&gt; true,\n        'language' =&gt; 'ja'\n    ],\n    'user' =&gt; [\n        'id' =&gt; 1234,\n        'name' =&gt; '\u4f50\u85e4\u82b1\u5b50'\n    ]\n];\n\n\/\/ JSON\u306b\u5909\u63db\uff08\u65e5\u672c\u8a9e\u5bfe\u5fdc\uff09\n$json = json_encode($data, JSON_UNESCAPED_UNICODE | JSON_PRETTY_PRINT);\necho $json;\n\/*\n{\n    \"settings\": {\n        \"theme\": \"dark\",\n        \"notifications\": true,\n        \"language\": \"ja\"\n    },\n    \"user\": {\n        \"id\": 1234,\n        \"name\": \"\u4f50\u85e4\u82b1\u5b50\"\n    }\n}\n*\/\n\n\/\/ JSON\u304b\u3089\u9023\u60f3\u914d\u5217\u306b\u623b\u3059\n$decodedArray = json_decode($json, true);\n\n\/\/ JSON\u304b\u3089\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u623b\u3059\n$decodedObject = json_decode($json);\necho $decodedObject-&gt;user-&gt;name; \/\/ '\u4f50\u85e4\u82b1\u5b50'\u3068\u51fa\u529b\n<\/pre>\n\n\n\n<p><strong>json_encode\u306e\u3088\u304f\u4f7f\u3046\u30aa\u30d7\u30b7\u30e7\u30f3<\/strong>:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">$data = ['\u540d\u524d' =&gt; '\u5c71\u7530\u592a\u90ce', '\u30e1\u30c3\u30bb\u30fc\u30b8' =&gt; \"\u3053\u3093\u306b\u3061\u306f\\n\u3088\u308d\u3057\u304f\"];\n\n\/\/ JSON_UNESCAPED_UNICODE: \u30de\u30eb\u30c1\u30d0\u30a4\u30c8\u6587\u5b57\uff08\u65e5\u672c\u8a9e\u306a\u3069\uff09\u3092\u305d\u306e\u307e\u307e\u51fa\u529b\n\/\/ JSON_PRETTY_PRINT: \u6574\u5f62\u3057\u3066\u30a4\u30f3\u30c7\u30f3\u30c8\u3092\u4ed8\u3051\u308b\n\/\/ JSON_UNESCAPED_SLASHES: \u30b9\u30e9\u30c3\u30b7\u30e5\u3092\u30a8\u30b9\u30b1\u30fc\u30d7\u3057\u306a\u3044\n\/\/ JSON_HEX_TAG: &lt;\u3068&gt;\u3092\u30a8\u30b9\u30b1\u30fc\u30d7\n\/\/ JSON_UNESCAPED_LINE_TERMINATORS: \u6539\u884c\u3092\u305d\u306e\u307e\u307e\u51fa\u529b\n$options = JSON_UNESCAPED_UNICODE | JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES;\necho json_encode($data, $options);\n<\/pre>\n\n\n\n<p><strong>JSON\u30a8\u30f3\u30b3\u30fc\u30c9\/\u30c7\u30b3\u30fc\u30c9\u306e\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0<\/strong>:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u7121\u52b9\u306aUTF-8\u6587\u5b57\u5217\u3092\u542b\u3080\u30c7\u30fc\u30bf\n$invalidData = ['name' =&gt; \"Invalid \\xB1 character\"];\n\n\/\/ \u30a8\u30f3\u30b3\u30fc\u30c9\u8a66\u884c\n$json = json_encode($invalidData);\nif ($json === false) {\n    echo 'JSON\u30a8\u30f3\u30b3\u30fc\u30c9\u30a8\u30e9\u30fc: ' . json_last_error_msg();\n}\n\n\/\/ \u7121\u52b9\u306aJSON\u6587\u5b57\u5217\n$invalidJson = '{\"name\": \"John\", unclosed_quote: \"value\" }';\n\n\/\/ \u30c7\u30b3\u30fc\u30c9\u8a66\u884c\n$data = json_decode($invalidJson, true);\nif ($data === null &amp;&amp; json_last_error() !== JSON_ERROR_NONE) {\n    echo 'JSON\u30c7\u30b3\u30fc\u30c9\u30a8\u30e9\u30fc: ' . json_last_error_msg();\n}\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-28\">DTO\uff08\u30c7\u30fc\u30bf\u8ee2\u9001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\uff09\u3068\u3057\u3066\u306e\u9023\u60f3\u914d\u5217\u306e\u4f7f\u7528\u4f8b<\/h3>\n\n\n\n<p>DTO\u306f\u3001\u30ec\u30a4\u30e4\u30fc\u9593\u3067\u30c7\u30fc\u30bf\u3092\u53d7\u3051\u6e21\u3059\u305f\u3081\u306e\u30b7\u30f3\u30d7\u30eb\u306a\u30c7\u30fc\u30bf\u69cb\u9020\u3067\u3059\u3002PHP\u3067\u306f\u9023\u60f3\u914d\u5217\u3092DTO\u3068\u3057\u3066\u52b9\u679c\u7684\u306b\u6d3b\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>\u57fa\u672c\u7684\u306aDTO\u5b9f\u88c5<\/strong>:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u304b\u3089\u53d6\u5f97\u3057\u305f\u30e6\u30fc\u30b6\u30fc\u30c7\u30fc\u30bf\u3092DTO\u5f62\u5f0f\u3067\u8868\u73fe\nfunction getUserDTO($userId) {\n    \/\/ \u5b9f\u969b\u306f\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u7b49\u304b\u3089\u53d6\u5f97\n    $userData = fetchUserFromDatabase($userId);\n    \n    \/\/ \u5fc5\u8981\u306a\u30c7\u30fc\u30bf\u3060\u3051\u3092\u62bd\u51fa\u3057\u3066DTO\u3092\u69cb\u7bc9\n    return [\n        'id' =&gt; $userData['id'],\n        'display_name' =&gt; $userData['first_name'] . ' ' . $userData['last_name'],\n        'email' =&gt; $userData['email'],\n        'is_admin' =&gt; $userData['role'] === 'admin',\n        'last_login' =&gt; new DateTime($userData['last_login'])\n    ];\n}\n\n\/\/ \u4f7f\u7528\u4f8b\n$userDto = getUserDTO(1001);\necho \"\u3053\u3093\u306b\u3061\u306f\u3001{$userDto['display_name']}\u3055\u3093\";\n<\/pre>\n\n\n\n<p><strong>\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u3068\u7d44\u307f\u5408\u308f\u305b\u305fDTO<\/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=\"\">\/\/ \u5165\u529b\u30c7\u30fc\u30bf\u3092\u691c\u8a3c\u3057\u3066DTO\u3092\u751f\u6210\nfunction createUserDTO($input) {\n    $errors = [];\n    $dto = [];\n    \n    \/\/ \u5fc5\u9808\u9805\u76ee\u306e\u691c\u8a3c\n    $requiredFields = ['email', 'password', 'name'];\n    foreach ($requiredFields as $field) {\n        if (empty($input[$field])) {\n            $errors[$field] = \"{$field}\u306f\u5fc5\u9808\u3067\u3059\";\n        }\n    }\n    \n    \/\/ \u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306e\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u691c\u8a3c\n    if (!empty($input['email']) &amp;&amp; !filter_var($input['email'], FILTER_VALIDATE_EMAIL)) {\n        $errors['email'] = \"\u6709\u52b9\u306a\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3092\u5165\u529b\u3057\u3066\u304f\u3060\u3055\u3044\";\n    }\n    \n    \/\/ \u30d1\u30b9\u30ef\u30fc\u30c9\u306e\u9577\u3055\u691c\u8a3c\n    if (!empty($input['password']) &amp;&amp; strlen($input['password']) &lt; 8) {\n        $errors['password'] = \"\u30d1\u30b9\u30ef\u30fc\u30c9\u306f8\u6587\u5b57\u4ee5\u4e0a\u5fc5\u8981\u3067\u3059\";\n    }\n    \n    \/\/ \u30a8\u30e9\u30fc\u304c\u306a\u3051\u308c\u3070DTO\u3092\u751f\u6210\n    if (empty($errors)) {\n        $dto = [\n            'email' =&gt; $input['email'],\n            'password' =&gt; password_hash($input['password'], PASSWORD_DEFAULT),\n            'name' =&gt; $input['name'],\n            'created_at' =&gt; new DateTime()\n        ];\n    }\n    \n    return ['dto' =&gt; $dto, 'errors' =&gt; $errors];\n}\n<\/pre>\n\n\n\n<p><strong>\u30a4\u30df\u30e5\u30fc\u30bf\u30d6\u30eb\u306aDTO\u30d1\u30bf\u30fc\u30f3<\/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=\"\">\/\/ \u30a4\u30df\u30e5\u30fc\u30bf\u30d6\u30eb\u306aDTO\u3092\u5b9f\u73fe\u3059\u308b\u95a2\u6570\nfunction createImmutableDTO(array $data) {\n    return new class($data) {\n        private $data;\n        \n        public function __construct(array $data) {\n            $this-&gt;data = $data;\n        }\n        \n        public function __get($name) {\n            return $this-&gt;data[$name] ?? null;\n        }\n        \n        public function toArray() {\n            return $this-&gt;data;\n        }\n        \n        public function with($key, $value) {\n            $newData = $this-&gt;data;\n            $newData[$key] = $value;\n            return new static($newData);\n        }\n    };\n}\n\n\/\/ \u4f7f\u7528\u4f8b\n$userDto = createImmutableDTO([\n    'id' =&gt; 1, \n    'name' =&gt; '\u5c71\u7530\u592a\u90ce'\n]);\n\necho $userDto-&gt;name; \/\/ \u30a2\u30af\u30bb\u30b9\u306f\u3067\u304d\u308b\n\/\/ $userDto-&gt;name = '\u65b0\u3057\u3044\u540d\u524d'; \/\/ \u30a8\u30e9\u30fc\uff1a\u76f4\u63a5\u5909\u66f4\u306f\u3067\u304d\u306a\u3044\n\n\/\/ \u65b0\u3057\u3044\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u4f5c\u6210\u3057\u3066\u5024\u3092\u5909\u66f4\n$updatedDto = $userDto-&gt;with('name', '\u5c71\u7530\u6b21\u90ce');\necho $updatedDto-&gt;name; \/\/ '\u5c71\u7530\u6b21\u90ce'\necho $userDto-&gt;name; \/\/ '\u5c71\u7530\u592a\u90ce'\uff08\u5143\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306f\u5909\u66f4\u3055\u308c\u306a\u3044\uff09\n<\/pre>\n\n\n\n<p>\u9023\u60f3\u914d\u5217\u3068\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u9069\u5207\u306b\u9023\u643a\u3055\u305b\u308b\u3053\u3068\u3067\u3001PHP\u306e\u67d4\u8edf\u6027\u3092\u6700\u5927\u9650\u306b\u6d3b\u304b\u3057\u305f\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u7279\u306b\u30c7\u30fc\u30bf\u306e\u53d7\u3051\u6e21\u3057\u3084API\u3068\u306e\u9023\u643a\u3001\u8a2d\u5b9a\u7ba1\u7406\u306a\u3069\u306e\u5834\u9762\u3067\u306f\u3001\u4e21\u8005\u306e\u7279\u6027\u3092\u7406\u89e3\u3057\u3066\u52b9\u679c\u7684\u306b\u4f7f\u3044\u5206\u3051\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u5b9f\u52d9\u3067\u4f7f\u3048\u308b\u9023\u60f3\u914d\u5217\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\u306b\u3064\u3044\u3066\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-29\">\u30c6\u30af\u30cb\u30c3\u30af7: \u5b9f\u52d9\u3067\u4f7f\u3048\u308b\u9023\u60f3\u914d\u5217\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316<\/h2>\n\n\n\n<p>\u5927\u898f\u6a21\u306aWeb\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3084\u51e6\u7406\u901f\u5ea6\u304c\u6c42\u3081\u3089\u308c\u308b\u30b7\u30b9\u30c6\u30e0\u3067\u306f\u3001\u9023\u60f3\u914d\u5217\u306e\u52b9\u7387\u7684\u306a\u6271\u3044\u304c\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306b\u5927\u304d\u306a\u5f71\u97ff\u3092\u4e0e\u3048\u307e\u3059\u3002\u3053\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u5b9f\u52d9\u3067\u5f79\u7acb\u3064\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\u30c6\u30af\u30cb\u30c3\u30af\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-30\">\u5927\u898f\u6a21\u9023\u60f3\u914d\u5217\u3092\u6271\u3046\u969b\u306e\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u524a\u6e1b\u65b9\u6cd5<\/h3>\n\n\n\n<p>PHP\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u304c\u30e1\u30e2\u30ea\u5236\u9650\u3067\u52d5\u4f5c\u4e0d\u80fd\u306b\u306a\u308b\u4e3b\u306a\u539f\u56e0\u306e\u4e00\u3064\u306f\u3001\u5927\u898f\u6a21\u306a\u9023\u60f3\u914d\u5217\u306e\u975e\u52b9\u7387\u306a\u6271\u3044\u3067\u3059\u3002\u7279\u306b\u5927\u91cf\u306e\u30c7\u30fc\u30bf\u3092\u51e6\u7406\u3059\u308b\u5834\u5408\u3001\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u306e\u6700\u9069\u5316\u306f\u4e0d\u53ef\u6b20\u3067\u3059\u3002<\/p>\n\n\n\n<p><strong>\u4e0d\u8981\u306a\u30c7\u30fc\u30bf\u306e\u89e3\u653e<\/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=\"\">\/\/ \u5927\u304d\u306a\u9023\u60f3\u914d\u5217\u3092\u51e6\u7406\u3059\u308b\n$largeArray = getLargeDataArray(); \/\/ \u6570\u767e\u4e07\u4ef6\u306e\u30c7\u30fc\u30bf\u3092\u542b\u3080\u914d\u5217\n\n\/\/ \u51e6\u7406\u5f8c\u3001\u3059\u3050\u306b\u4e0d\u8981\u306b\u306a\u308b\u30c7\u30fc\u30bf\u3092\u89e3\u653e\nforeach ($largeArray as $key =&gt; $value) {\n    processData($value);\n    unset($largeArray[$key]); \/\/ \u51e6\u7406\u6e08\u307f\u306e\u30c7\u30fc\u30bf\u3092\u5373\u5ea7\u306b\u89e3\u653e\n}\n\n\/\/ \u307e\u305f\u306f\u914d\u5217\u5168\u4f53\u3092\u89e3\u653e\nunset($largeArray);\n<\/pre>\n\n\n\n<p><strong>\u30b8\u30a7\u30cd\u30ec\u30fc\u30bf\u3092\u4f7f\u3063\u305f\u7701\u30e1\u30e2\u30ea\u51e6\u7406<\/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=\"\">\/\/ \u901a\u5e38\u306e\u95a2\u6570\uff08\u3059\u3079\u3066\u306e\u30c7\u30fc\u30bf\u3092\u30e1\u30e2\u30ea\u306b\u4fdd\u6301\uff09\nfunction getNormalData() {\n    $result = [];\n    \/\/ 100\u4e07\u884c\u306e\u30c7\u30fc\u30bf\u3092\u751f\u6210\n    for ($i = 0; $i &lt; 1000000; $i++) {\n        $result[] = [\n            'id' =&gt; $i,\n            'data' =&gt; \"\u30c7\u30fc\u30bf {$i}\"\n        ];\n    }\n    return $result;\n}\n\n\/\/ \u30b8\u30a7\u30cd\u30ec\u30fc\u30bf\u95a2\u6570\uff081\u884c\u305a\u3064\u751f\u6210\u3059\u308b\u306e\u3067\u7701\u30e1\u30e2\u30ea\uff09\nfunction getDataGenerator() {\n    \/\/ 100\u4e07\u884c\u306e\u30c7\u30fc\u30bf\u30921\u884c\u305a\u3064\u751f\u6210\n    for ($i = 0; $i &lt; 1000000; $i++) {\n        yield [\n            'id' =&gt; $i,\n            'data' =&gt; \"\u30c7\u30fc\u30bf {$i}\"\n        ];\n    }\n}\n\n\/\/ \u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u306e\u6bd4\u8f03\n\/\/ $normalData = getNormalData(); \/\/ \u6570\u767eMB\u306e\u30e1\u30e2\u30ea\u3092\u4f7f\u7528\n\/\/ foreach ($normalData as $item) {\n\/\/     processItem($item);\n\/\/ }\n\n\/\/ \u6570MB\u306e\u30e1\u30e2\u30ea\u3057\u304b\u4f7f\u7528\u3057\u306a\u3044\nforeach (getDataGenerator() as $item) {\n    processItem($item);\n}\n<\/pre>\n\n\n\n<p><strong>\u30c1\u30e3\u30f3\u30af\u51e6\u7406\u306b\u3088\u308b\u5927\u898f\u6a21\u30c7\u30fc\u30bf\u306e\u5206\u5272<\/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=\"\">\/\/ \u5927\u91cf\u306e\u30c7\u30fc\u30bf\u3092\u4e00\u5ea6\u306b\u51e6\u7406\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u5c0f\u5206\u3051\u306b\u3059\u308b\n$allIds = range(1, 1000000);\n$chunks = array_chunk($allIds, 1000);\n\nforeach ($chunks as $chunk) {\n    \/\/ 1000\u4ef6\u305a\u3064\u51e6\u7406\n    $data = fetchDataByIds($chunk);\n    processData($data);\n    unset($data); \/\/ \u51e6\u7406\u6e08\u307f\u30c7\u30fc\u30bf\u3092\u5373\u5ea7\u306b\u89e3\u653e\n}\n<\/pre>\n\n\n\n<p><strong>\u53c2\u7167\u306b\u3088\u308b\u5927\u304d\u306a\u914d\u5217\u306e\u52b9\u7387\u7684\u306a\u51e6\u7406<\/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=\"\">\/\/ \u53c2\u7167\u3092\u4f7f\u3046\u3053\u3068\u3067\u5927\u304d\u306a\u914d\u5217\u306e\u30b3\u30d4\u30fc\u3092\u907f\u3051\u308b\nfunction processLargeArray(&amp;$array) {\n    foreach ($array as &amp;$value) {\n        $value *= 2; \/\/ \u5024\u30922\u500d\u306b\n    }\n    unset($value); \/\/ \u53c2\u7167\u3092\u89e3\u9664\u3059\u308b\u3053\u3068\u3092\u5fd8\u308c\u305a\u306b\n}\n\n$numbers = range(1, 1000000);\nprocessLargeArray($numbers);\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-31\">\u9023\u60f3\u914d\u5217\u64cd\u4f5c\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u3068\u305d\u306e\u56de\u907f\u6cd5<\/h3>\n\n\n\n<p>\u9023\u60f3\u914d\u5217\u3092\u64cd\u4f5c\u3059\u308b\u969b\u3001\u7279\u5b9a\u306e\u64cd\u4f5c\u306f\u4e88\u60f3\u4ee5\u4e0a\u306b\u8ca0\u8377\u304c\u9ad8\u304f\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u306b\u306a\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u3089\u3092\u77e5\u308a\u3001\u56de\u907f\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<p><strong>in_array()\u306e\u52b9\u7387\u7684\u306a\u4ee3\u66ff<\/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=\"\">\/\/ \u975e\u52b9\u7387\u306a\u65b9\u6cd5\uff08\u6bce\u56de\u914d\u5217\u5168\u4f53\u3092\u691c\u7d22\uff09\n$haystack = range(1, 10000);\nforeach ($someData as $value) {\n    if (in_array($value, $haystack)) { \/\/ O(n)\u306e\u6642\u9593\u8907\u96d1\u5ea6\n        \/\/ \u51e6\u7406...\n    }\n}\n\n\/\/ \u52b9\u7387\u7684\u306a\u65b9\u6cd5\uff08\u30cf\u30c3\u30b7\u30e5\u30de\u30c3\u30d7\u3067\u691c\u7d22\uff09\n$haystackMap = array_flip($haystack); \/\/ \u30ad\u30fc\u3068\u5024\u3092\u5165\u308c\u66ff\u3048\nforeach ($someData as $value) {\n    if (isset($haystackMap[$value])) { \/\/ O(1)\u306e\u6642\u9593\u8907\u96d1\u5ea6\n        \/\/ \u51e6\u7406...\n    }\n}\n<\/pre>\n\n\n\n<p><strong>\u914d\u5217\u7d50\u5408\u306e\u6700\u9069\u5316<\/strong>:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u975e\u52b9\u7387: \u7e70\u308a\u8fd4\u3057array_merge\u3092\u547c\u3073\u51fa\u3059\n$result = [];\nfor ($i = 0; $i &lt; 1000; $i++) {\n    $result = array_merge($result, getSomeData($i));\n}\n\n\/\/ \u52b9\u7387\u7684: \u4e00\u5ea6\u3060\u3051array_merge\u3092\u547c\u3073\u51fa\u3059\n$chunks = [];\nfor ($i = 0; $i &lt; 1000; $i++) {\n    $chunks[] = getSomeData($i);\n}\n$result = array_merge(...$chunks);\n\n\/\/ \u307e\u305f\u306f\u64cd\u4f5c\u3054\u3068\u306b\u5358\u7d14\u306b\u8ffd\u52a0\n$result = [];\nfor ($i = 0; $i &lt; 1000; $i++) {\n    foreach (getSomeData($i) as $key =&gt; $value) {\n        $result[$key] = $value;\n    }\n}\n<\/pre>\n\n\n\n<p><strong>\u30eb\u30fc\u30d7\u5185\u3067\u306e\u4e0d\u8981\u306a\u518d\u8a08\u7b97\u306e\u56de\u907f<\/strong>:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u975e\u52b9\u7387\uff08\u30eb\u30fc\u30d7\u3054\u3068\u306bcount()\u304c\u547c\u3070\u308c\u308b\uff09\n$data = getSomeData();\nfor ($i = 0; $i &lt; count($data); $i++) {\n    \/\/ \u51e6\u7406...\n}\n\n\/\/ \u52b9\u7387\u7684\uff08count()\u306f1\u56de\u3060\u3051\u547c\u3070\u308c\u308b\uff09\n$data = getSomeData();\n$count = count($data);\nfor ($i = 0; $i &lt; $count; $i++) {\n    \/\/ \u51e6\u7406...\n}\n<\/pre>\n\n\n\n<p><strong>\u914d\u5217\u3092\u95a2\u6570\u306b\u6e21\u3059\u969b\u306e\u30b3\u30d4\u30fc\u30b3\u30b9\u30c8\u306e\u524a\u6e1b<\/strong>:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u975e\u52b9\u7387\uff08\u914d\u5217\u5168\u4f53\u304c\u30b3\u30d4\u30fc\u3055\u308c\u308b\uff09\nfunction processArray($array) {\n    \/\/ \u51e6\u7406...\n}\n\n\/\/ \u52b9\u7387\u7684\uff08\u53c2\u7167\u3067\u6e21\u3059\u306e\u3067\u30b3\u30d4\u30fc\u306a\u3057\uff09\nfunction processArrayByRef(&amp;$array) {\n    \/\/ \u51e6\u7406...\n}\n<\/pre>\n\n\n\n<p><strong>\u30bd\u30fc\u30c8\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u8003\u616e<\/strong>:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u6bd4\u8f03\u7684\u4f4e\u30b3\u30b9\u30c8\u306a\u30bd\u30fc\u30c8\uff08\u30ad\u30fc\u306f\u4fdd\u6301\u3055\u308c\u308b\uff09\nasort($largeArray);\n\n\/\/ \u9ad8\u30b3\u30b9\u30c8\u306a\u64cd\u4f5c\uff08\u30ab\u30b9\u30bf\u30e0\u30bd\u30fc\u30c8\u95a2\u6570\u306e\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\uff09\nuasort($largeArray, function($a, $b) {\n    \/\/ \u8907\u96d1\u306a\u6bd4\u8f03\u30ed\u30b8\u30c3\u30af\n});\n\n\/\/ \u8907\u96d1\u306a\u30bd\u30fc\u30c8\u304c\u5fc5\u8981\u306a\u5834\u5408\u3001\u4e8b\u524d\u306b\u30bd\u30fc\u30c8\u30ad\u30fc\u3092\u8a08\u7b97\n$sortKeys = [];\nforeach ($largeArray as $key =&gt; $value) {\n    $sortKeys[$key] = calculateSortValue($value);\n}\n\/\/ \u30b7\u30f3\u30d7\u30eb\u306a\u30bd\u30fc\u30c8\u3067\u51e6\u7406\narray_multisort($sortKeys, SORT_ASC, $largeArray);\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-32\">SPL\u30c7\u30fc\u30bf\u69cb\u9020\u3092\u6d3b\u7528\u3057\u305f\u9ad8\u901f\u306a\u9023\u60f3\u914d\u5217\u64cd\u4f5c<\/h3>\n\n\n\n<p>\u6a19\u6e96PHP Library\u304c\u63d0\u4f9b\u3059\u308b\u7279\u6b8a\u306a\u30c7\u30fc\u30bf\u69cb\u9020\u3092\u4f7f\u3046\u3053\u3068\u3067\u3001\u7279\u5b9a\u306e\u30b7\u30ca\u30ea\u30aa\u3067\u306f\u901a\u5e38\u306e\u9023\u60f3\u914d\u5217\u3088\u308a\u3082\u52b9\u7387\u7684\u306a\u64cd\u4f5c\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>SplFixedArray \u2013 \u9ad8\u901f\u306a\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u914d\u5217<\/strong>:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u901a\u5e38\u306e\u914d\u5217\n$regular = [];\nfor ($i = 0; $i &lt; 100000; $i++) {\n    $regular[$i] = $i;\n}\n\n\/\/ SplFixedArray\uff08\u30b5\u30a4\u30ba\u56fa\u5b9a\u3067\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306f\u6574\u6570\u306e\u307f\uff09\n$fixed = new SplFixedArray(100000);\nfor ($i = 0; $i &lt; 100000; $i++) {\n    $fixed[$i] = $i;\n}\n\n\/\/ SplFixedArray\u306e\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u306f\u901a\u5e38\u306e\u914d\u5217\u3088\u308a\u3082\u5c11\u306a\u3044\n\/\/ \u307e\u305f\u3001\u6574\u6570\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3078\u306e\u30a2\u30af\u30bb\u30b9\u306f\u3088\u308a\u9ad8\u901f\n<\/pre>\n\n\n\n<p><strong>SplObjectStorage \u2013 \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u52b9\u7387\u7684\u306a\u7ba1\u7406<\/strong>:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u30ad\u30fc\u3068\u3057\u3066\u4f7f\u7528\u3059\u308b\u5834\u5408\u306b\u6700\u9069\n$storage = new SplObjectStorage();\n\n$object1 = new stdClass();\n$object2 = new stdClass();\n\n\/\/ \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u30ad\u30fc\u3068\u3057\u3066\u4f7f\u7528\n$storage[$object1] = '\u30c7\u30fc\u30bf1';\n$storage[$object2] = '\u30c7\u30fc\u30bf2';\n\n\/\/ \u5b58\u5728\u78ba\u8a8d\u3082\u9ad8\u901f\nif (isset($storage[$object1])) {\n    echo \"\u30aa\u30d6\u30b8\u30a7\u30af\u30c81\u306f\u5b58\u5728\u3057\u307e\u3059\";\n}\n\n\/\/ \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u4e00\u610f\u6027\u3092\u5229\u7528\u3057\u305f\u30bb\u30c3\u30c8\u3068\u3057\u3066\u3082\u4f7f\u7528\u53ef\u80fd\n$uniqueObjects = new SplObjectStorage();\n$uniqueObjects-&gt;attach($object1);\n$uniqueObjects-&gt;attach($object2);\n$uniqueObjects-&gt;attach($object1); \/\/ \u91cd\u8907\u306f\u7121\u8996\u3055\u308c\u308b\necho count($uniqueObjects); \/\/ 2\u304c\u51fa\u529b\u3055\u308c\u308b\n<\/pre>\n\n\n\n<p><strong>SplPriorityQueue \u2013 \u512a\u5148\u5ea6\u306b\u57fa\u3065\u3044\u305f\u51e6\u7406<\/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=\"\">\/\/ \u512a\u5148\u5ea6\u4ed8\u304d\u30ad\u30e5\u30fc\n$queue = new SplPriorityQueue();\n\n\/\/ \u30c7\u30fc\u30bf\u3092\u512a\u5148\u5ea6\u4ed8\u304d\u3067\u8ffd\u52a0\n$queue-&gt;insert('\u901a\u5e38\u30bf\u30b9\u30af', 1);\n$queue-&gt;insert('\u91cd\u8981\u30bf\u30b9\u30af', 3);\n$queue-&gt;insert('\u4f4e\u512a\u5148\u30bf\u30b9\u30af', 0);\n$queue-&gt;insert('\u7dca\u6025\u30bf\u30b9\u30af', 5);\n\n\/\/ \u512a\u5148\u5ea6\u9806\u306b\u53d6\u308a\u51fa\u3059\n$queue-&gt;setExtractFlags(SplPriorityQueue::EXTR_DATA);\nwhile (!$queue-&gt;isEmpty()) {\n    echo $queue-&gt;extract(), \"\\n\";\n}\n\/\/ \u51fa\u529b\u9806: \u7dca\u6025\u30bf\u30b9\u30af\u3001\u91cd\u8981\u30bf\u30b9\u30af\u3001\u901a\u5e38\u30bf\u30b9\u30af\u3001\u4f4e\u512a\u5148\u30bf\u30b9\u30af\n<\/pre>\n\n\n\n<p><strong>SplDoublyLinkedList \u2013 \u30ea\u30b9\u30c8\u64cd\u4f5c\u304c\u591a\u3044\u5834\u5408\u306b<\/strong>:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u4e21\u65b9\u5411\u30ea\u30b9\u30c8\n$list = new SplDoublyLinkedList();\n\n\/\/ \u8981\u7d20\u3092\u8ffd\u52a0\nfor ($i = 0; $i &lt; 10; $i++) {\n    $list-&gt;push($i);\n}\n\n\/\/ \u5148\u982d\u306b\u8981\u7d20\u3092\u8ffd\u52a0\uff08\u914d\u5217\u3067\u306f\u975e\u52b9\u7387\uff09\n$list-&gt;unshift(-1);\n\n\/\/ \u4e2d\u9593\u306b\u8981\u7d20\u3092\u633f\u5165\uff08\u901a\u5e38\u306e\u914d\u5217\u3067\u306f\u9ad8\u30b3\u30b9\u30c8\uff09\n$list-&gt;add(5, 'inserted');\n\n\/\/ \u4e21\u65b9\u5411\u304b\u3089\u8d70\u67fb\u53ef\u80fd\n$list-&gt;setIteratorMode(SplDoublyLinkedList::IT_MODE_FIFO);\nforeach ($list as $item) {\n    echo $item, \" \";\n}\n\n$list-&gt;setIteratorMode(SplDoublyLinkedList::IT_MODE_LIFO);\nforeach ($list as $item) {\n    echo $item, \" \";\n}\n<\/pre>\n\n\n\n<p>SPL\u30c7\u30fc\u30bf\u69cb\u9020\u306f\u901a\u5e38\u306e\u9023\u60f3\u914d\u5217\u3088\u308a\u3082\u7279\u5b9a\u306e\u30bf\u30b9\u30af\u306b\u7279\u5316\u3057\u3066\u3044\u308b\u305f\u3081\u3001\u9069\u5207\u306a\u30b7\u30fc\u30f3\u3067\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u5927\u5e45\u306a\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u5411\u4e0a\u304c\u671f\u5f85\u3067\u304d\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u4e71\u7528\u3059\u308b\u3068\u53ef\u8aad\u6027\u304c\u4e0b\u304c\u308b\u305f\u3081\u3001\u5fc5\u8981\u306a\u5834\u6240\u3067\u9069\u5207\u306b\u4f7f\u3044\u5206\u3051\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-33\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u8a08\u6e2c\u3068\u30c7\u30d0\u30c3\u30b0<\/h3>\n\n\n\n<p>\u6700\u9069\u5316\u3092\u884c\u3046\u969b\u306f\u3001\u5b9f\u969b\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u5411\u4e0a\u3092\u8a08\u6e2c\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30b7\u30f3\u30d7\u30eb\u306a\u30d9\u30f3\u30c1\u30de\u30fc\u30af\u95a2\u6570\nfunction benchmark($func, $iterations = 1000) {\n    $start = microtime(true);\n    $memory_start = memory_get_usage();\n    \n    for ($i = 0; $i &lt; $iterations; $i++) {\n        $func();\n    }\n    \n    $memory_peak = memory_get_peak_usage() - $memory_start;\n    $time = microtime(true) - $start;\n    \n    return [\n        'time' =&gt; $time,\n        'time_per_iteration' =&gt; $time \/ $iterations,\n        'memory_peak' =&gt; $memory_peak,\n        'memory_avg' =&gt; $memory_peak \/ $iterations\n    ];\n}\n\n\/\/ \u4f7f\u7528\u4f8b\n$result1 = benchmark(function() {\n    \/\/ \u901a\u5e38\u306e\u914d\u5217\u64cd\u4f5c\n    $array = range(1, 10000);\n    $filtered = array_filter($array, function($num) {\n        return $num % 2 === 0;\n    });\n});\n\n$result2 = benchmark(function() {\n    \/\/ \u6700\u9069\u5316\u3057\u305f\u914d\u5217\u64cd\u4f5c\n    $evenNumbers = [];\n    for ($i = 2; $i &lt;= 10000; $i += 2) {\n        $evenNumbers[] = $i;\n    }\n});\n\necho \"\u901a\u5e38\u306e\u65b9\u6cd5: {$result1['time']}\u79d2, {$result1['memory_peak']}\u30d0\u30a4\u30c8\\n\";\necho \"\u6700\u9069\u5316\u3057\u305f\u65b9\u6cd5: {$result2['time']}\u79d2, {$result2['memory_peak']}\u30d0\u30a4\u30c8\\n\";\n<\/pre>\n\n\n\n<p>\u5b9f\u52d9\u3067\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\u3067\u306f\u3001\u6b21\u306e\u3088\u3046\u306a\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3092\u5fc3\u304c\u3051\u307e\u3057\u3087\u3046\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u8a08\u6e2c\u3057\u3066\u304b\u3089\u6700\u9069\u5316\u3059\u308b<\/strong> \u2013 \u63a8\u6e2c\u3067\u306f\u306a\u304f\u5b9f\u6e2c\u306b\u57fa\u3065\u3044\u3066\u6700\u9069\u5316<\/li>\n\n\n\n<li><strong>\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u306b\u96c6\u4e2d\u3059\u308b<\/strong> \u2013 \u5168\u4f53\u306e20%\u306e\u7b87\u6240\u304c80%\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u554f\u984c\u3092\u5f15\u304d\u8d77\u3053\u3057\u3066\u3044\u308b<\/li>\n\n\n\n<li><strong>\u8907\u96d1\u3055\u3068\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u30d0\u30e9\u30f3\u30b9<\/strong> \u2013 \u53ef\u8aad\u6027\u3092\u6975\u7aef\u306b\u72a0\u7272\u306b\u3059\u308b\u6700\u9069\u5316\u306f\u907f\u3051\u308b<\/li>\n\n\n\n<li><strong>\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u6d3b\u7528\u3059\u308b<\/strong> \u2013 \u8a08\u7b97\u30b3\u30b9\u30c8\u306e\u9ad8\u3044\u7d50\u679c\u306f\u9069\u5207\u306b\u30ad\u30e3\u30c3\u30b7\u30e5\u3059\u308b<\/li>\n\n\n\n<li><strong>\u30e1\u30e2\u30ea\u3068\u901f\u5ea6\u306e\u30c8\u30ec\u30fc\u30c9\u30aa\u30d5\u3092\u610f\u8b58\u3059\u308b<\/strong> \u2013 \u5834\u5408\u306b\u3088\u3063\u3066\u306f\u30e1\u30e2\u30ea\u3092\u6d88\u8cbb\u3057\u3066\u901f\u5ea6\u3092\u5411\u4e0a\u3055\u305b\u308b<\/li>\n<\/ol>\n\n\n\n<p>\u9023\u60f3\u914d\u5217\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\u306f\u3001\u7279\u306b\u5927\u898f\u6a21\u306a\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3084\u5927\u91cf\u30c7\u30fc\u30bf\u306e\u51e6\u7406\u306b\u304a\u3044\u3066\u5a01\u529b\u3092\u767a\u63ee\u3057\u307e\u3059\u3002\u3053\u3053\u3067\u7d39\u4ecb\u3057\u305f\u30c6\u30af\u30cb\u30c3\u30af\u3092\u9069\u6750\u9069\u6240\u3067\u6d3b\u7528\u3057\u3001\u52b9\u7387\u7684\u306a\u30b3\u30fc\u30c9\u3092\u66f8\u3044\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-34\">\u9023\u60f3\u914d\u5217\u6d3b\u7528\u306e\u5b9f\u8df5\u4f8b \u2013 \u73fe\u5834\u3067\u5373\u4f7f\u3048\u308b\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9<\/h2>\n\n\n\n<p>\u3053\u308c\u307e\u3067\u89e3\u8aac\u3057\u3066\u304d\u305f\u9023\u60f3\u914d\u5217\u306e7\u3064\u306e\u30c6\u30af\u30cb\u30c3\u30af\u3092\u5b9f\u969b\u306e\u958b\u767a\u73fe\u5834\u3067\u3069\u3046\u6d3b\u304b\u3059\u306e\u304b\u3001\u5177\u4f53\u7684\u306a\u30b7\u30ca\u30ea\u30aa\u3068\u30b3\u30fc\u30c9\u4f8b\u3067\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002\u3053\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u7d39\u4ecb\u3059\u308b\u30b3\u30fc\u30c9\u306f\u3001\u5b9f\u52d9\u3067\u3088\u304f\u906d\u9047\u3059\u308b\u72b6\u6cc1\u306b\u5bfe\u5fdc\u3057\u3066\u304a\u308a\u3001\u5c11\u3057\u4fee\u6b63\u3059\u308b\u3060\u3051\u3067\u81ea\u5206\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u53d6\u308a\u5165\u308c\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-35\">\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u7d50\u679c\u30bb\u30c3\u30c8\u306e\u52b9\u7387\u7684\u306a\u51e6\u7406\u65b9\u6cd5<\/h3>\n\n\n\n<p>\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u304b\u3089\u53d6\u5f97\u3057\u305f\u7d50\u679c\u3092\u52b9\u7387\u7684\u306b\u51e6\u7406\u3059\u308b\u30b1\u30fc\u30b9\u306f\u591a\u304f\u306e\u958b\u767a\u73fe\u5834\u3067\u65e5\u5e38\u7684\u306b\u767a\u751f\u3057\u307e\u3059\u3002\u9023\u60f3\u914d\u5217\u3092\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u7d50\u679c\u30bb\u30c3\u30c8\u3092\u4f7f\u3044\u3084\u3059\u3044\u5f62\u306b\u6574\u7406\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>ID\u306b\u3088\u308b\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u4ed8\u3051<\/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=\"\">\/**\n * \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u7d50\u679c\u3092ID\u5225\u306b\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u4ed8\u3051\u3059\u308b\n * \n * @param array $rows \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u7d50\u679c\u30bb\u30c3\u30c8\n * @param string $idColumn ID\u3068\u3057\u3066\u4f7f\u7528\u3059\u308b\u30ab\u30e9\u30e0\u540d\n * @return array ID\u3067\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u4ed8\u3051\u3055\u308c\u305f\u9023\u60f3\u914d\u5217\n *\/\nfunction indexResultsById($rows, $idColumn = 'id') {\n    $indexed = [];\n    foreach ($rows as $row) {\n        $indexed[$row[$idColumn]] = $row;\n    }\n    return $indexed;\n}\n\n\/\/ \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u304b\u3089\u53d6\u5f97\u3057\u305f\u30e6\u30fc\u30b6\u30fc\u306e\u30ea\u30b9\u30c8\n$users = $db-&gt;query(\"SELECT * FROM users\")-&gt;fetchAll(PDO::FETCH_ASSOC);\n\n\/\/ ID\u3067\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u4ed8\u3051\n$usersById = indexResultsById($users);\n\n\/\/ ID 5\u306e\u30e6\u30fc\u30b6\u30fc\u306b\u76f4\u63a5\u30a2\u30af\u30bb\u30b9\u53ef\u80fd\necho $usersById[5]['name']; \/\/ \u6307\u5b9aID\u306e\u30e6\u30fc\u30b6\u30fc\u540d\u3092\u8868\u793a\n<\/pre>\n\n\n\n<p><strong>\u89aa\u5b50\u95a2\u4fc2\u306e\u69cb\u9020\u5316<\/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=\"\">\/**\n * \u89aa\u5b50\u95a2\u4fc2\u306e\u3042\u308b\u30c7\u30fc\u30bf\u3092\u968e\u5c64\u69cb\u9020\u306b\u6574\u5f62\u3059\u308b\n * \n * @param array $rows \u5e73\u5766\u306a\u7d50\u679c\u30bb\u30c3\u30c8\n * @param string $parentKey \u89aaID\u306e\u30ab\u30e9\u30e0\u540d\n * @param string $childrenKey \u5b50\u8981\u7d20\u3092\u683c\u7d0d\u3059\u308b\u30ad\u30fc\u540d\n * @param string $idKey ID\u30ab\u30e9\u30e0\u540d\n * @return array \u968e\u5c64\u69cb\u9020\u5316\u3055\u308c\u305f\u30c7\u30fc\u30bf\n *\/\nfunction buildTree($rows, $parentKey = 'parent_id', $childrenKey = 'children', $idKey = 'id') {\n    $indexed = [];\n    $root = [];\n    \n    \/\/ \u307e\u305aID\u3067\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u4ed8\u3051\n    foreach ($rows as $row) {\n        $indexed[$row[$idKey]] = $row;\n        $indexed[$row[$idKey]][$childrenKey] = [];\n    }\n    \n    \/\/ \u89aa\u5b50\u95a2\u4fc2\u3092\u69cb\u7bc9\n    foreach ($indexed as $id =&gt; $item) {\n        $parentId = $item[$parentKey];\n        \n        if ($parentId === null || $parentId === 0 || !isset($indexed[$parentId])) {\n            \/\/ \u89aa\u304c\u306a\u3044\u304b\u3001\u5b58\u5728\u3057\u306a\u3044\u89aaID\u306e\u5834\u5408\u306f\u30eb\u30fc\u30c8\u306b\n            $root[] = &amp;$indexed[$id];\n        } else {\n            \/\/ \u89aa\u306e\u5b50\u8981\u7d20\u3068\u3057\u3066\u8ffd\u52a0\n            $indexed[$parentId][$childrenKey][] = &amp;$indexed[$id];\n        }\n    }\n    \n    return $root;\n}\n\n\/\/ \u30ab\u30c6\u30b4\u30ea\u30fc\u30c6\u30fc\u30d6\u30eb\u304b\u3089\u5168\u30c7\u30fc\u30bf\u53d6\u5f97\uff08\u89aa\u30ab\u30c6\u30b4\u30ea\u3068\u5b50\u30ab\u30c6\u30b4\u30ea\u304c\u5e73\u5766\u306a\u914d\u5217\uff09\n$categories = $db-&gt;query(\"SELECT * FROM categories ORDER BY parent_id, name\")-&gt;fetchAll(PDO::FETCH_ASSOC);\n\n\/\/ \u968e\u5c64\u69cb\u9020\u306b\u6574\u5f62\n$categoryTree = buildTree($categories);\n\n\/\/ \u968e\u5c64\u69cb\u9020\u3092JSON\u5f62\u5f0f\u3067\u51fa\u529b\necho json_encode($categoryTree, JSON_UNESCAPED_UNICODE | JSON_PRETTY_PRINT);\n<\/pre>\n\n\n\n<p><strong>\u30b0\u30eb\u30fc\u30d7\u5316\u3068\u96c6\u8a08<\/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=\"\">\/**\n * \u7d50\u679c\u30bb\u30c3\u30c8\u3092\u30ad\u30fc\u3067\u30b0\u30eb\u30fc\u30d7\u5316\u3057\u3001\u30aa\u30d7\u30b7\u30e7\u30f3\u3067\u96c6\u8a08\u3059\u308b\n * \n * @param array $rows \u7d50\u679c\u30bb\u30c3\u30c8\n * @param string $groupKey \u30b0\u30eb\u30fc\u30d7\u5316\u3059\u308b\u30ab\u30e9\u30e0\u540d\n * @param array $aggregates \u96c6\u8a08\u5b9a\u7fa9\n * @return array \u30b0\u30eb\u30fc\u30d7\u5316\u3055\u308c\u305f\u9023\u60f3\u914d\u5217\n *\/\nfunction groupAndAggregate($rows, $groupKey, $aggregates = []) {\n    $result = [];\n    \n    foreach ($rows as $row) {\n        $group = $row[$groupKey];\n        \n        if (!isset($result[$group])) {\n            $result[$group] = [\n                'items' =&gt; [],\n                'count' =&gt; 0\n            ];\n            \n            \/\/ \u96c6\u8a08\u5024\u3092\u521d\u671f\u5316\n            foreach ($aggregates as $name =&gt; $aggregate) {\n                $result[$group][$name] = 0;\n            }\n        }\n        \n        $result[$group]['items'][] = $row;\n        $result[$group]['count']++;\n        \n        \/\/ \u96c6\u8a08\u3092\u5b9f\u884c\n        foreach ($aggregates as $name =&gt; $aggregate) {\n            $column = $aggregate['column'];\n            $operation = $aggregate['operation'];\n            \n            switch ($operation) {\n                case 'sum':\n                    $result[$group][$name] += $row[$column];\n                    break;\n                case 'avg':\n                    $result[$group][$name] = (\n                        $result[$group][$name] * ($result[$group]['count'] - 1) + $row[$column]\n                    ) \/ $result[$group]['count'];\n                    break;\n                case 'max':\n                    $result[$group][$name] = max($result[$group][$name], $row[$column]);\n                    break;\n                case 'min':\n                    if ($result[$group]['count'] === 1) {\n                        $result[$group][$name] = $row[$column];\n                    } else {\n                        $result[$group][$name] = min($result[$group][$name], $row[$column]);\n                    }\n                    break;\n            }\n        }\n    }\n    \n    return $result;\n}\n\n\/\/ \u6ce8\u6587\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\n$orders = $db-&gt;query(\"SELECT * FROM orders WHERE order_date &gt;= '2023-01-01'\")-&gt;fetchAll(PDO::FETCH_ASSOC);\n\n\/\/ \u9867\u5ba2\u5225\u306b\u30b0\u30eb\u30fc\u30d7\u5316\u3057\u3001\u5408\u8a08\u91d1\u984d\u3068\u5e73\u5747\u6ce8\u6587\u984d\u3092\u8a08\u7b97\n$customerOrders = groupAndAggregate($orders, 'customer_id', [\n    'total_amount' =&gt; ['column' =&gt; 'amount', 'operation' =&gt; 'sum'],\n    'avg_order' =&gt; ['column' =&gt; 'amount', 'operation' =&gt; 'avg']\n]);\n\n\/\/ \u7d50\u679c\u3092\u8868\u793a\nforeach ($customerOrders as $customerId =&gt; $data) {\n    echo \"\u9867\u5ba2ID: {$customerId}, \u6ce8\u6587\u6570: {$data['count']}, \";\n    echo \"\u5408\u8a08\u91d1\u984d: {$data['total_amount']}\u5186, \u5e73\u5747\u6ce8\u6587\u984d: {$data['avg_order']}\u5186\\n\";\n}\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-36\">API\u30ec\u30b9\u30dd\u30f3\u30b9\u306e\u6574\u5f62\u3068\u51e6\u7406\u30c6\u30af\u30cb\u30c3\u30af<\/h3>\n\n\n\n<p>Web\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u958b\u767a\u3067\u306f\u3001\u5916\u90e8API\u3068\u306e\u9023\u643a\u306f\u907f\u3051\u3089\u308c\u307e\u305b\u3093\u3002\u9023\u60f3\u914d\u5217\u3092\u99c6\u4f7f\u3057\u3066\u3001JSON\u30ec\u30b9\u30dd\u30f3\u30b9\u3092\u52b9\u7387\u7684\u306b\u51e6\u7406\u3059\u308b\u65b9\u6cd5\u3092\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p><strong>API\u30ec\u30b9\u30dd\u30f3\u30b9\u306e\u6a19\u6e96\u5316<\/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=\"\">\/**\n * \u7570\u306a\u308bAPI\u30ec\u30b9\u30dd\u30f3\u30b9\u3092\u6a19\u6e96\u5f62\u5f0f\u306b\u5909\u63db\u3059\u308b\n * \n * @param array $response \u5143\u306eAPI\u30ec\u30b9\u30dd\u30f3\u30b9\n * @param string $apiType API\u7a2e\u5225\n * @return array \u6a19\u6e96\u5316\u3055\u308c\u305f\u30ec\u30b9\u30dd\u30f3\u30b9\n *\/\nfunction normalizeApiResponse($response, $apiType) {\n    $normalized = [\n        'success' =&gt; false,\n        'data' =&gt; null,\n        'error' =&gt; null,\n        'meta' =&gt; []\n    ];\n    \n    switch ($apiType) {\n        case 'api1':\n            \/\/ API1\u306e\u5f62\u5f0f: { \"status\": \"ok|error\", \"results\": [...], \"error_message\": \"...\" }\n            $normalized['success'] = ($response['status'] === 'ok');\n            $normalized['data'] = $response['results'] ?? null;\n            $normalized['error'] = $response['error_message'] ?? null;\n            break;\n            \n        case 'api2':\n            \/\/ API2\u306e\u5f62\u5f0f: { \"code\": 200|400|500, \"response\": {...}, \"errors\": [...] }\n            $normalized['success'] = ($response['code'] &gt;= 200 &amp;&amp; $response['code'] &lt; 300);\n            $normalized['data'] = $response['response'] ?? null;\n            $normalized['error'] = isset($response['errors']) ? implode(', ', $response['errors']) : null;\n            $normalized['meta']['code'] = $response['code'];\n            break;\n            \n        case 'api3':\n            \/\/ API3\u306e\u5f62\u5f0f: { \"data\": {...}, \"error\": null, \"pagination\": {...} }\n            $normalized['success'] = ($response['error'] === null);\n            $normalized['data'] = $response['data'] ?? null;\n            $normalized['error'] = $response['error'];\n            $normalized['meta']['pagination'] = $response['pagination'] ?? null;\n            break;\n    }\n    \n    return $normalized;\n}\n\n\/\/ \u7570\u306a\u308bAPI\u304b\u3089\u306e\u30ec\u30b9\u30dd\u30f3\u30b9\u3092\u53d6\u5f97\n$response1 = json_decode(file_get_contents('https:\/\/api1.example.com\/users'), true);\n$response2 = json_decode(file_get_contents('https:\/\/api2.example.com\/products'), true);\n\n\/\/ \u6a19\u6e96\u5f62\u5f0f\u306b\u5909\u63db\n$normalized1 = normalizeApiResponse($response1, 'api1');\n$normalized2 = normalizeApiResponse($response2, 'api2');\n\n\/\/ \u7d71\u4e00\u3055\u308c\u305f\u65b9\u6cd5\u3067\u51e6\u7406\nif ($normalized1['success']) {\n    \/\/ \u30c7\u30fc\u30bf\u3092\u51e6\u7406\n    processData($normalized1['data']);\n} else {\n    \/\/ \u30a8\u30e9\u30fc\u3092\u51e6\u7406\n    handleError($normalized1['error']);\n}\n<\/pre>\n\n\n\n<p><strong>\u8907\u96d1\u306a\u30cd\u30b9\u30c8API\u30ec\u30b9\u30dd\u30f3\u30b9\u306e\u30d5\u30e9\u30c3\u30c8\u5316<\/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=\"\">\/**\n * \u6df1\u304f\u30cd\u30b9\u30c8\u3057\u305fAPI\u30ec\u30b9\u30dd\u30f3\u30b9\u3092\u30d5\u30e9\u30c3\u30c8\u306a\u69cb\u9020\u306b\u5909\u63db\n * \n * @param array $response \u30cd\u30b9\u30c8\u3057\u305fAPI\u30ec\u30b9\u30dd\u30f3\u30b9\n * @param string $prefix \u30ad\u30fc\u63a5\u982d\u8f9e\n * @param string $separator \u30ad\u30fc\u533a\u5207\u308a\u6587\u5b57\n * @return array \u30d5\u30e9\u30c3\u30c8\u5316\u3055\u308c\u305f\u9023\u60f3\u914d\u5217\n *\/\nfunction flattenApiResponse($response, $prefix = '', $separator = '.') {\n    $result = [];\n    \n    foreach ($response as $key =&gt; $value) {\n        $newKey = $prefix ? $prefix . $separator . $key : $key;\n        \n        if (is_array($value) &amp;&amp; !empty($value) &amp;&amp; array_keys($value) !== range(0, count($value) - 1)) {\n            \/\/ \u9023\u60f3\u914d\u5217\u306e\u5834\u5408\u306f\u518d\u5e30\u7684\u306b\u51e6\u7406\n            $result = array_merge($result, flattenApiResponse($value, $newKey, $separator));\n        } else {\n            \/\/ \u30b9\u30ab\u30e9\u30fc\u5024\u307e\u305f\u306f\u7d22\u5f15\u914d\u5217\u306e\u5834\u5408\u306f\u305d\u306e\u307e\u307e\u4ee3\u5165\n            $result[$newKey] = $value;\n        }\n    }\n    \n    return $result;\n}\n\n\/\/ \u8907\u96d1\u306a\u30cd\u30b9\u30c8\u3092\u3082\u3064API\u30ec\u30b9\u30dd\u30f3\u30b9\n$userResponse = json_decode(file_get_contents('https:\/\/api.example.com\/user\/123'), true);\n\n\/\/ \u30d5\u30e9\u30c3\u30c8\u5316\n$flatUser = flattenApiResponse($userResponse);\n\n\/\/ \u30a2\u30af\u30bb\u30b9\u304c\u7c21\u5358\u306b\necho $flatUser['user.profile.address.city']; \/\/ \u6771\u4eac\necho $flatUser['user.subscription.plan.name']; \/\/ \u30d7\u30ec\u30df\u30a2\u30e0\n<\/pre>\n\n\n\n<p><strong>\u30da\u30fc\u30b8\u30cd\u30fc\u30b7\u30e7\u30f3\u51e6\u7406<\/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=\"\">\/**\n * \u30da\u30fc\u30b8\u30cd\u30fc\u30b7\u30e7\u30f3\u3092\u51e6\u7406\u3059\u308b\u30d8\u30eb\u30d1\u30fc\u95a2\u6570\n * \n * @param string $baseUrl \u57fa\u672cURL\n * @param array $pagination \u30da\u30fc\u30b8\u30cd\u30fc\u30b7\u30e7\u30f3\u60c5\u5831\n * @param array $params \u305d\u306e\u4ed6\u306e\u30af\u30a8\u30ea\u30d1\u30e9\u30e1\u30fc\u30bf\n * @return array \u30da\u30fc\u30b8\u30ca\u30d3\u30b2\u30fc\u30b7\u30e7\u30f3\u60c5\u5831\n *\/\nfunction handlePagination($baseUrl, $pagination, $params = []) {\n    $currentPage = $pagination['current_page'] ?? 1;\n    $lastPage = $pagination['last_page'] ?? 1;\n    $perPage = $pagination['per_page'] ?? 10;\n    \n    $result = [\n        'current_page' =&gt; $currentPage,\n        'last_page' =&gt; $lastPage,\n        'per_page' =&gt; $perPage,\n        'total' =&gt; $pagination['total'] ?? 0,\n        'links' =&gt; []\n    ];\n    \n    \/\/ \u30af\u30a8\u30ea\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u69cb\u7bc9\n    $queryParams = array_merge(['per_page' =&gt; $perPage], $params);\n    \n    \/\/ \u524d\u306e\u30da\u30fc\u30b8\n    if ($currentPage &gt; 1) {\n        $prevParams = array_merge($queryParams, ['page' =&gt; $currentPage - 1]);\n        $result['links']['prev'] = $baseUrl . '?' . http_build_query($prevParams);\n    }\n    \n    \/\/ \u6b21\u306e\u30da\u30fc\u30b8\n    if ($currentPage &lt; $lastPage) {\n        $nextParams = array_merge($queryParams, ['page' =&gt; $currentPage + 1]);\n        $result['links']['next'] = $baseUrl . '?' . http_build_query($nextParams);\n    }\n    \n    \/\/ \u6700\u521d\u3068\u6700\u5f8c\u306e\u30da\u30fc\u30b8\n    $firstParams = array_merge($queryParams, ['page' =&gt; 1]);\n    $lastParams = array_merge($queryParams, ['page' =&gt; $lastPage]);\n    $result['links']['first'] = $baseUrl . '?' . http_build_query($firstParams);\n    $result['links']['last'] = $baseUrl . '?' . http_build_query($lastParams);\n    \n    return $result;\n}\n\n\/\/ API\u304b\u3089\u306e\u30da\u30fc\u30b8\u30cd\u30fc\u30b7\u30e7\u30f3\u4ed8\u304d\u30ec\u30b9\u30dd\u30f3\u30b9\n$response = json_decode(file_get_contents('https:\/\/api.example.com\/products?page=2&amp;category=electronics'), true);\n\n\/\/ \u30da\u30fc\u30b8\u30cd\u30fc\u30b7\u30e7\u30f3\u51e6\u7406\n$pagination = handlePagination(\n    'https:\/\/api.example.com\/products',\n    $response['meta']['pagination'],\n    ['category' =&gt; 'electronics', 'sort' =&gt; 'price']\n);\n\n\/\/ \u30ea\u30f3\u30af\u3092\u4f7f\u3063\u3066\u6b21\u306e\u30da\u30fc\u30b8\u3092\u53d6\u5f97\nif (isset($pagination['links']['next'])) {\n    $nextPageResponse = json_decode(file_get_contents($pagination['links']['next']), true);\n}\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-37\">\u30d5\u30a9\u30fc\u30e0\u30c7\u30fc\u30bf\u306e\u691c\u8a3c\u3068\u52a0\u5de5\u306b\u304a\u3051\u308b\u9023\u60f3\u914d\u5217\u306e\u6d3b\u7528\u6cd5<\/h3>\n\n\n\n<p>Web\u30d5\u30a9\u30fc\u30e0\u304b\u3089\u306e\u5165\u529b\u30c7\u30fc\u30bf\u3092\u5b89\u5168\u306b\u51e6\u7406\u3059\u308b\u3053\u3068\u306f\u3001\u30bb\u30ad\u30e5\u30a2\u306a\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u958b\u767a\u306e\u57fa\u672c\u3067\u3059\u3002\u9023\u60f3\u914d\u5217\u3092\u4f7f\u3063\u305f\u30d5\u30a9\u30fc\u30e0\u30c7\u30fc\u30bf\u306e\u691c\u8a3c\u3068\u52a0\u5de5\u306e\u65b9\u6cd5\u3092\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p><strong>\u30d5\u30a9\u30fc\u30e0\u30c7\u30fc\u30bf\u306e\u5b89\u5168\u306a\u53d6\u5f97\u3068\u691c\u8a3c<\/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=\"\">\/**\n * \u30d5\u30a9\u30fc\u30e0\u30c7\u30fc\u30bf\u3092\u5b89\u5168\u306b\u53d6\u5f97\u3057\u691c\u8a3c\u3059\u308b\n * \n * @param array $rules \u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u30eb\u30fc\u30eb\n * @param array $data \u691c\u8a3c\u3059\u308b\u30c7\u30fc\u30bf\uff08\u6307\u5b9a\u304c\u306a\u3051\u308c\u3070$_POST\uff09\n * @return array [\u691c\u8a3c\u6e08\u307f\u30c7\u30fc\u30bf, \u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8]\n *\/\nfunction validateFormData($rules, $data = null) {\n    $data = $data ?? $_POST;\n    $sanitized = [];\n    $errors = [];\n    \n    foreach ($rules as $field =&gt; $rule) {\n        \/\/ \u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u521d\u671f\u5024\u3092\u8a2d\u5b9a\n        $sanitized[$field] = $data[$field] ?? null;\n        \n        \/\/ \u5fc5\u9808\u30c1\u30a7\u30c3\u30af\n        if (isset($rule['required']) &amp;&amp; $rule['required'] &amp;&amp; empty($data[$field])) {\n            $errors[$field] = $rule['message'] ?? \"{$field}\u306f\u5fc5\u9808\u9805\u76ee\u3067\u3059\";\n            continue;\n        }\n        \n        \/\/ \u5b58\u5728\u3057\u306a\u3044\u30d5\u30a3\u30fc\u30eb\u30c9\u306f\u30b9\u30ad\u30c3\u30d7\n        if (!isset($data[$field]) || $data[$field] === '') {\n            continue;\n        }\n        \n        $value = $data[$field];\n        \n        \/\/ \u578b\u5909\u63db\n        if (isset($rule['type'])) {\n            switch ($rule['type']) {\n                case 'int':\n                    $sanitized[$field] = (int)$value;\n                    break;\n                case 'float':\n                    $sanitized[$field] = (float)$value;\n                    break;\n                case 'bool':\n                    $sanitized[$field] = (bool)$value;\n                    break;\n                case 'string':\n                    $sanitized[$field] = trim((string)$value);\n                    break;\n            }\n        }\n        \n        \/\/ \u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\n        if (isset($rule['validate'])) {\n            switch ($rule['validate']) {\n                case 'email':\n                    if (!filter_var($value, FILTER_VALIDATE_EMAIL)) {\n                        $errors[$field] = $rule['message'] ?? \"\u6709\u52b9\u306a\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3092\u5165\u529b\u3057\u3066\u304f\u3060\u3055\u3044\";\n                    }\n                    break;\n                case 'url':\n                    if (!filter_var($value, FILTER_VALIDATE_URL)) {\n                        $errors[$field] = $rule['message'] ?? \"\u6709\u52b9\u306aURL\u3092\u5165\u529b\u3057\u3066\u304f\u3060\u3055\u3044\";\n                    }\n                    break;\n                case 'min_length':\n                    if (strlen($value) &lt; $rule['min']) {\n                        $errors[$field] = $rule['message'] ?? \"{$field}\u306f{$rule['min']}\u6587\u5b57\u4ee5\u4e0a\u3067\u5165\u529b\u3057\u3066\u304f\u3060\u3055\u3044\";\n                    }\n                    break;\n                case 'max_length':\n                    if (strlen($value) &gt; $rule['max']) {\n                        $errors[$field] = $rule['message'] ?? \"{$field}\u306f{$rule['max']}\u6587\u5b57\u4ee5\u4e0b\u3067\u5165\u529b\u3057\u3066\u304f\u3060\u3055\u3044\";\n                    }\n                    break;\n                case 'regex':\n                    if (!preg_match($rule['pattern'], $value)) {\n                        $errors[$field] = $rule['message'] ?? \"{$field}\u306e\u5f62\u5f0f\u304c\u6b63\u3057\u304f\u3042\u308a\u307e\u305b\u3093\";\n                    }\n                    break;\n            }\n        }\n    }\n    \n    return [$sanitized, $errors];\n}\n\n\/\/ \u4f7f\u7528\u4f8b\n$rules = [\n    'name' =&gt; [\n        'required' =&gt; true,\n        'type' =&gt; 'string',\n        'validate' =&gt; 'min_length',\n        'min' =&gt; 2,\n        'message' =&gt; '\u540d\u524d\u306f2\u6587\u5b57\u4ee5\u4e0a\u3067\u5165\u529b\u3057\u3066\u304f\u3060\u3055\u3044'\n    ],\n    'email' =&gt; [\n        'required' =&gt; true,\n        'type' =&gt; 'string',\n        'validate' =&gt; 'email',\n        'message' =&gt; '\u6709\u52b9\u306a\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3092\u5165\u529b\u3057\u3066\u304f\u3060\u3055\u3044'\n    ],\n    'age' =&gt; [\n        'required' =&gt; false,\n        'type' =&gt; 'int'\n    ],\n    'website' =&gt; [\n        'required' =&gt; false,\n        'type' =&gt; 'string',\n        'validate' =&gt; 'url',\n        'message' =&gt; '\u6709\u52b9\u306aURL\u3092\u5165\u529b\u3057\u3066\u304f\u3060\u3055\u3044'\n    ]\n];\n\n\/\/ \u30d5\u30a9\u30fc\u30e0\u30c7\u30fc\u30bf\u3092\u691c\u8a3c\n[$data, $errors] = validateFormData($rules);\n\n\/\/ \u30a8\u30e9\u30fc\u304c\u3042\u308c\u3070\u8868\u793a\u3001\u306a\u3051\u308c\u3070\u30c7\u30fc\u30bf\u3092\u51e6\u7406\nif (empty($errors)) {\n    \/\/ \u691c\u8a3c\u6e08\u307f\u30c7\u30fc\u30bf\u3092\u51e6\u7406\n    processValidatedData($data);\n} else {\n    \/\/ \u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u8868\u793a\n    foreach ($errors as $field =&gt; $message) {\n        echo \"{$field}: {$message}&lt;br&gt;\";\n    }\n}\n<\/pre>\n\n\n\n<p><strong>\u914d\u5217\u578b\u30d5\u30a9\u30fc\u30e0\u306e\u51e6\u7406<\/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=\"\">\/**\n * \u914d\u5217\u578b\u30d5\u30a9\u30fc\u30e0\u30c7\u30fc\u30bf\u3092\u51e6\u7406\u3059\u308b\n * \n * \u4f8b: preferences[colors][] = red, preferences[colors][] = blue\n * \n * @param array $post $_POST\u7b49\u306e\u30d5\u30a9\u30fc\u30e0\u30c7\u30fc\u30bf\n * @return array \u6574\u5f62\u3055\u308c\u305f\u30c7\u30fc\u30bf\n *\/\nfunction processArrayFormData($post) {\n    $result = [];\n    \n    foreach ($post as $key =&gt; $value) {\n        if (is_array($value)) {\n            \/\/ \u914d\u5217\u306e\u5834\u5408\u306f\u518d\u5e30\u7684\u306b\u51e6\u7406\n            $result[$key] = processArrayFormData($value);\n        } else {\n            \/\/ \u5358\u4e00\u5024\u306e\u5834\u5408\u306f\u30c8\u30ea\u30df\u30f3\u30b0\u3057\u3066\u4ee3\u5165\n            $result[$key] = trim($value);\n        }\n    }\n    \n    return $result;\n}\n\n\/\/ \u4f7f\u7528\u4f8b\uff08\u8907\u96d1\u306a\u30d5\u30a9\u30fc\u30e0\u30c7\u30fc\u30bf\uff09\n\/\/ $_POST = [\n\/\/     'user' =&gt; [\n\/\/         'name' =&gt; 'John Doe',\n\/\/         'email' =&gt; 'john@example.com'\n\/\/     ],\n\/\/     'preferences' =&gt; [\n\/\/         'colors' =&gt; ['red', 'blue', 'green'],\n\/\/         'notifications' =&gt; 'yes'\n\/\/     ],\n\/\/     'address' =&gt; [\n\/\/         'street' =&gt; '123 Main St',\n\/\/         'city' =&gt; 'New York'\n\/\/     ]\n\/\/ ];\n\n$formData = processArrayFormData($_POST);\n\n\/\/ \u968e\u5c64\u7684\u306b\u30a2\u30af\u30bb\u30b9\necho $formData['user']['name']; \/\/ 'John Doe'\necho $formData['preferences']['colors'][0]; \/\/ 'red'\n<\/pre>\n\n\n\n<p><strong>\u30d5\u30a9\u30fc\u30e0\u30c7\u30fc\u30bf\u306e\u4fdd\u6301\u3068\u518d\u8868\u793a<\/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=\"\">\/**\n * \u30d5\u30a9\u30fc\u30e0\u306e\u5165\u529b\u5024\u3092\u4fdd\u6301\u3059\u308b\u30d8\u30eb\u30d1\u30fc\u95a2\u6570\n * \n * @param string $field \u30d5\u30a3\u30fc\u30eb\u30c9\u540d\n * @param mixed $default \u30c7\u30d5\u30a9\u30eb\u30c8\u5024\n * @param array $oldInput \u53e4\u3044\u5165\u529b\u5024\n * @return string \u30a8\u30b9\u30b1\u30fc\u30d7\u3055\u308c\u305f\u5165\u529b\u5024\n *\/\nfunction oldInput($field, $default = '', $oldInput = null) {\n    $oldInput = $oldInput ?? $_SESSION['old_input'] ?? [];\n    $value = $oldInput[$field] ?? $default;\n    return htmlspecialchars($value, ENT_QUOTES, 'UTF-8');\n}\n\n\/**\n * \u30d5\u30a9\u30fc\u30e0\u30a8\u30e9\u30fc\u3092\u8868\u793a\u3059\u308b\u30d8\u30eb\u30d1\u30fc\u95a2\u6570\n * \n * @param string $field \u30d5\u30a3\u30fc\u30eb\u30c9\u540d\n * @param array $errors \u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u914d\u5217\n * @return string \u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8HTML\n *\/\nfunction formError($field, $errors = null) {\n    $errors = $errors ?? $_SESSION['form_errors'] ?? [];\n    if (isset($errors[$field])) {\n        return '&lt;div class=\"error\"&gt;' . htmlspecialchars($errors[$field], ENT_QUOTES, 'UTF-8') . '&lt;\/div&gt;';\n    }\n    return '';\n}\n\n\/\/ \u4f7f\u7528\u4f8b\uff08\u30d5\u30a9\u30fc\u30e0\u9001\u4fe1\u5f8c\u306e\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u524d\uff09\nif (!empty($errors)) {\n    $_SESSION['old_input'] = $data;\n    $_SESSION['form_errors'] = $errors;\n    header('Location: \/form.php');\n    exit;\n}\n\n\/\/ \u30d5\u30a9\u30fc\u30e0HTML\u5185\u3067\u306e\u4f7f\u7528\u4f8b\n?&gt;\n&lt;form method=\"post\"&gt;\n    &lt;div class=\"form-group\"&gt;\n        &lt;label for=\"name\"&gt;\u540d\u524d&lt;\/label&gt;\n        &lt;input type=\"text\" id=\"name\" name=\"name\" value=\"&lt;?= oldInput('name') ?&gt;\"&gt;\n        &lt;?= formError('name') ?&gt;\n    &lt;\/div&gt;\n    &lt;div class=\"form-group\"&gt;\n        &lt;label for=\"email\"&gt;\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9&lt;\/label&gt;\n        &lt;input type=\"email\" id=\"email\" name=\"email\" value=\"&lt;?= oldInput('email') ?&gt;\"&gt;\n        &lt;?= formError('email') ?&gt;\n    &lt;\/div&gt;\n    &lt;button type=\"submit\"&gt;\u9001\u4fe1&lt;\/button&gt;\n&lt;\/form&gt;\n<\/pre>\n\n\n\n<p>\u4ee5\u4e0a\u306e\u5b9f\u8df5\u4f8b\u3092\u53c2\u8003\u306b\u3001\u81ea\u5206\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u5408\u308f\u305b\u3066\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3059\u308b\u3053\u3068\u3067\u3001\u9023\u60f3\u914d\u5217\u306e\u529b\u3092\u6700\u5927\u9650\u306b\u6d3b\u304b\u3057\u305f\u52b9\u7387\u7684\u306a\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u3053\u3068\u304c\u3067\u304d\u308b\u3067\u3057\u3087\u3046\u3002\u5b9f\u52d9\u3067\u306e\u5fdc\u7528\u7bc4\u56f2\u306f\u7121\u9650\u5927\u3067\u3001\u3053\u3053\u3067\u7d39\u4ecb\u3057\u305f\u4f8b\u306f\u3042\u304f\u307e\u3067\u3082\u51fa\u767a\u70b9\u3067\u3059\u3002\u72b6\u6cc1\u306b\u5fdc\u3058\u3066\u5de5\u592b\u3092\u91cd\u306d\u3066\u3044\u304f\u3053\u3068\u3067\u3001\u3088\u308a\u6d17\u7df4\u3055\u308c\u305f\u30b3\u30fc\u30c9\u304c\u66f8\u3051\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-38\">\u307e\u3068\u3081 \u2013 PHP\u9023\u60f3\u914d\u5217\u30de\u30b9\u30bf\u30fc\u3078\u306e\u6b21\u306e\u30b9\u30c6\u30c3\u30d7<\/h2>\n\n\n\n<p>\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001PHP\u306e\u9023\u60f3\u914d\u5217\u3092\u4f7f\u3044\u3053\u306a\u3059\u305f\u3081\u306e7\u3064\u306e\u30c6\u30af\u30cb\u30c3\u30af\u3092\u8a73\u3057\u304f\u89e3\u8aac\u3057\u3066\u304d\u307e\u3057\u305f\u3002\u9023\u60f3\u914d\u5217\u306f\u5358\u306a\u308b\u30c7\u30fc\u30bf\u306e\u683c\u7d0d\u5834\u6240\u3067\u306f\u306a\u304f\u3001PHP\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u4e2d\u6838\u3092\u6210\u3059\u5f37\u529b\u306a\u30c4\u30fc\u30eb\u3067\u3042\u308a\u3001\u305d\u306e\u53ef\u80fd\u6027\u3092\u6700\u5927\u9650\u306b\u5f15\u304d\u51fa\u3059\u3053\u3068\u3067\u3001\u3088\u308a\u52b9\u7387\u7684\u3067\u4fdd\u5b88\u6027\u306e\u9ad8\u3044\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u3053\u3067\u5b66\u3093\u3060\u30c6\u30af\u30cb\u30c3\u30af\u3092\u5b9f\u52d9\u3067\u6d3b\u304b\u3057\u3001\u9023\u60f3\u914d\u5217\u30de\u30b9\u30bf\u30fc\u3078\u306e\u9053\u3092\u9032\u3080\u305f\u3081\u306e\u307e\u3068\u3081\u3068\u3057\u3066\u3001\u4ee5\u4e0b\u306e\u30dd\u30a4\u30f3\u30c8\u3092\u62bc\u3055\u3048\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-39\">7\u3064\u306e\u30c6\u30af\u30cb\u30c3\u30af\u3092\u4f7f\u3044\u3053\u306a\u3059\u305f\u3081\u306e\u30c1\u30a7\u30c3\u30af\u30ea\u30b9\u30c8<\/h3>\n\n\n\n<p>\u4ee5\u4e0b\u306e\u30c1\u30a7\u30c3\u30af\u30ea\u30b9\u30c8\u3092\u4f7f\u3063\u3066\u3001\u81ea\u5206\u306e\u9023\u60f3\u914d\u5217\u30b9\u30ad\u30eb\u3092\u8a55\u4fa1\u3057\u3001\u3055\u3089\u306a\u308b\u4e0a\u9054\u3092\u76ee\u6307\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>[ ] <strong>\u57fa\u672c\u64cd\u4f5c\u306e\u7fd2\u5f97<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u9023\u60f3\u914d\u5217\u306e\u4f5c\u6210\u3001\u30a2\u30af\u30bb\u30b9\u3001\u8ffd\u52a0\u3001\u66f4\u65b0\u3001\u524a\u9664\u306e\u57fa\u672c\u64cd\u4f5c\u3092\u7406\u89e3\u3057\u3066\u3044\u308b<\/li>\n\n\n\n<li>\u30ad\u30fc\u306e\u578b\uff08\u6587\u5b57\u5217\u3068\u6570\u5024\uff09\u306b\u3088\u308b\u9055\u3044\u3092\u7406\u89e3\u3057\u3066\u3044\u308b<\/li>\n\n\n\n<li>isset()\u3068empty()\u306e\u9055\u3044\u3092\u7406\u89e3\u3057\u3001\u9069\u5207\u306b\u4f7f\u3044\u5206\u3051\u3089\u308c\u308b<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>[ ] <strong>\u591a\u6b21\u5143\u914d\u5217\u306e\u6d3b\u7528<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u8907\u96d1\u306a\u30c7\u30fc\u30bf\u69cb\u9020\u3092\u591a\u6b21\u5143\u914d\u5217\u3067\u8868\u73fe\u3067\u304d\u308b<\/li>\n\n\n\n<li>\u6df1\u304f\u30cd\u30b9\u30c8\u3055\u308c\u305f\u914d\u5217\u306b\u5b89\u5168\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b<\/li>\n\n\n\n<li>JSON\u3068\u306e\u76f8\u4e92\u5909\u63db\u3092\u6d3b\u7528\u3067\u304d\u308b<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>[ ] <strong>\u9ad8\u968e\u95a2\u6570\u306e\u6d3b\u7528<\/strong>\n<ul class=\"wp-block-list\">\n<li>array_map()\u3092\u4f7f\u3063\u3066\u914d\u5217\u8981\u7d20\u3092\u4e00\u62ec\u5909\u63db\u3067\u304d\u308b<\/li>\n\n\n\n<li>array_filter()\u3067\u6761\u4ef6\u306b\u5408\u3046\u8981\u7d20\u3092\u62bd\u51fa\u3067\u304d\u308b<\/li>\n\n\n\n<li>\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\u3092\u4f7f\u3063\u305f\u9ad8\u5ea6\u306a\u30c7\u30fc\u30bf\u51e6\u7406\u304c\u3067\u304d\u308b<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>[ ] <strong>\u30bd\u30fc\u30c8\u3068\u30b0\u30eb\u30fc\u30d7\u5316<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u69d8\u3005\u306a\u30bd\u30fc\u30c8\u95a2\u6570\u306e\u9055\u3044\u3092\u7406\u89e3\u3057\u3001\u9069\u5207\u306b\u9078\u629e\u3067\u304d\u308b<\/li>\n\n\n\n<li>\u8907\u6570\u6761\u4ef6\u3067\u306e\u30bd\u30fc\u30c8\u3092\u5b9f\u88c5\u3067\u304d\u308b<\/li>\n\n\n\n<li>\u30ab\u30c6\u30b4\u30ea\u3054\u3068\u306e\u30b0\u30eb\u30fc\u30d7\u5316\u3092\u52b9\u7387\u7684\u306b\u884c\u3048\u308b<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>[ ] <strong>\u30eb\u30fc\u30d7\u51e6\u7406\u306e\u6700\u9069\u5316<\/strong>\n<ul class=\"wp-block-list\">\n<li>foreach\u30eb\u30fc\u30d7\u3092\u52b9\u7387\u7684\u306b\u4f7f\u3044\u3001\u53c2\u7167\u6e21\u3057\u3092\u9069\u5207\u306b\u6d3b\u7528\u3067\u304d\u308b<\/li>\n\n\n\n<li>\u5927\u898f\u6a21\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u5411\u3051\u306b\u30a4\u30c6\u30ec\u30fc\u30bf\u3084\u30b8\u30a7\u30cd\u30ec\u30fc\u30bf\u3092\u4f7f\u3048\u308b<\/li>\n\n\n\n<li>\u30eb\u30fc\u30d7\u5185\u3067\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u3092\u7279\u5b9a\u3057\u89e3\u6d88\u3067\u304d\u308b<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>[ ] <strong>\u30c7\u30fc\u30bf\u691c\u8a3c\u3068\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u9023\u60f3\u914d\u5217\u306e\u5b89\u5168\u306a\u691c\u8a3c\u65b9\u6cd5\u3092\u5b9f\u88c5\u3067\u304d\u308b<\/li>\n\n\n\n<li>Null\u5408\u4f53\u6f14\u7b97\u5b50\u306a\u3069\u3092\u6d3b\u7528\u3057\u305f\u5b89\u5168\u306a\u30a2\u30af\u30bb\u30b9\u304c\u3067\u304d\u308b<\/li>\n\n\n\n<li>\u4f8b\u5916\u51e6\u7406\u3068\u7d44\u307f\u5408\u308f\u305b\u305f\u5805\u7262\u306a\u30b3\u30fc\u30c9\u304c\u66f8\u3051\u308b<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>[ ] <strong>\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3068\u306e\u9023\u643a\u3068\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u9023\u60f3\u914d\u5217\u3068\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u9069\u5207\u306b\u5909\u63db\u30fb\u9023\u643a\u3067\u304d\u308b<\/li>\n\n\n\n<li>DTO\u3068\u3057\u3066\u306e\u9023\u60f3\u914d\u5217\u3092\u6d3b\u7528\u3067\u304d\u308b<\/li>\n\n\n\n<li>\u5927\u898f\u6a21\u914d\u5217\u306e\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u3068\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u6700\u9069\u5316\u3067\u304d\u308b<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-40\">\u9023\u60f3\u914d\u5217\u3092\u52b9\u679c\u7684\u306b\u4f7f\u3046\u305f\u3081\u306e5\u3064\u306e\u539f\u5247<\/h3>\n\n\n\n<p>\u9023\u60f3\u914d\u5217\u3092\u4f7f\u3063\u305f\u30b3\u30fc\u30c9\u306e\u54c1\u8cea\u3092\u9ad8\u3081\u308b\u305f\u3081\u306b\u3001\u4ee5\u4e0b\u306e5\u3064\u306e\u539f\u5247\u3092\u5fc3\u304c\u3051\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u610f\u5473\u306e\u3042\u308b\u30ad\u30fc\u540d\u3092\u4f7f\u7528\u3059\u308b<\/strong> \u9023\u60f3\u914d\u5217\u306e\u30ad\u30fc\u306b\u306f\u3001\u305d\u306e\u76ee\u7684\u3084\u5185\u5bb9\u304c\u4e00\u76ee\u3067\u308f\u304b\u308b\u610f\u5473\u306e\u3042\u308b\u540d\u524d\u3092\u4ed8\u3051\u307e\u3057\u3087\u3046\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30b3\u30fc\u30c9\u306e\u53ef\u8aad\u6027\u3068\u4fdd\u5b88\u6027\u304c\u5927\u5e45\u306b\u5411\u4e0a\u3057\u307e\u3059\u3002 <code>\/\/ \u826f\u3044\u4f8b $user = ['first_name' =&gt; '\u592a\u90ce', 'last_name' =&gt; '\u5c71\u7530', 'email' =&gt; 'taro@example.com']; \/\/ \u907f\u3051\u308b\u3079\u304d\u4f8b $user = ['fn' =&gt; '\u592a\u90ce', 'ln' =&gt; '\u5c71\u7530', 'e' =&gt; 'taro@example.com'];<\/code><\/li>\n\n\n\n<li><strong>\u4e00\u8cab\u3057\u305f\u69cb\u9020\u3092\u7dad\u6301\u3059\u308b<\/strong> \u540c\u3058\u7a2e\u985e\u306e\u30c7\u30fc\u30bf\u3092\u6271\u3046\u9023\u60f3\u914d\u5217\u306f\u3001\u5e38\u306b\u540c\u3058\u69cb\u9020\u3092\u7dad\u6301\u3057\u307e\u3057\u3087\u3046\u3002\u30ad\u30fc\u306e\u6709\u7121\u3084\u30c7\u30fc\u30bf\u578b\u304c\u5834\u5408\u306b\u3088\u3063\u3066\u5909\u308f\u308b\u3068\u3001\u30d0\u30b0\u306e\u539f\u56e0\u306b\u306a\u308a\u307e\u3059\u3002 <code>\/\/ \u3059\u3079\u3066\u306e\u30e6\u30fc\u30b6\u30fc\u30c7\u30fc\u30bf\u304c\u540c\u3058\u69cb\u9020\u3092\u6301\u3064\u3088\u3046\u306b\u3059\u308b $users = [ ['id' =&gt; 1, 'name' =&gt; '\u5c71\u7530\u592a\u90ce', 'active' =&gt; true], ['id' =&gt; 2, 'name' =&gt; '\u4f50\u85e4\u82b1\u5b50', 'active' =&gt; false], \/\/ 'active'\u30ad\u30fc\u304c\u6b20\u3051\u3066\u3044\u308b\u3068\u30d0\u30b0\u306e\u539f\u56e0\u306b ['id' =&gt; 3, 'name' =&gt; '\u9234\u6728\u4e00\u90ce'] ];<\/code><\/li>\n\n\n\n<li><strong>\u9069\u5207\u306a\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u3092\u5b9f\u88c5\u3059\u308b<\/strong> \u9023\u60f3\u914d\u5217\u306e\u30ad\u30fc\u304c\u5b58\u5728\u3057\u306a\u3044\u53ef\u80fd\u6027\u3092\u5e38\u306b\u8003\u616e\u3057\u3001\u9069\u5207\u306a\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u3084\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u306e\u8a2d\u5b9a\u3092\u884c\u3044\u307e\u3057\u3087\u3046\u3002 <code>\/\/ Null\u5408\u4f53\u6f14\u7b97\u5b50\u3092\u4f7f\u3063\u305f\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0 $name = $user['name'] ?? '\u540d\u524d\u306a\u3057'; \/\/ \u6df1\u304f\u30cd\u30b9\u30c8\u3055\u308c\u305f\u914d\u5217\u306e\u5b89\u5168\u306a\u30a2\u30af\u30bb\u30b9 $city = $data['user']['address']['city'] ?? '\u4e0d\u660e';<\/code><\/li>\n\n\n\n<li><strong>\u518d\u5229\u7528\u6027\u3092\u9ad8\u3081\u308b\u62bd\u8c61\u5316\u3092\u5fc3\u304c\u3051\u308b<\/strong> \u9023\u60f3\u914d\u5217\u306e\u64cd\u4f5c\u3092\u884c\u3046\u30b3\u30fc\u30c9\u306f\u3001\u518d\u5229\u7528\u53ef\u80fd\u306a\u95a2\u6570\u3084\u30af\u30e9\u30b9\u3068\u3057\u3066\u62bd\u8c61\u5316\u3057\u307e\u3057\u3087\u3046\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30b3\u30fc\u30c9\u306e\u91cd\u8907\u3092\u6e1b\u3089\u3057\u3001\u4e00\u8cab\u6027\u3092\u9ad8\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 <code>\/\/ \u9023\u60f3\u914d\u5217\u306e\u5b89\u5168\u306a\u30a2\u30af\u30bb\u30b9\u3092\u62bd\u8c61\u5316\u3057\u305f\u95a2\u6570 function array_get($array, $key, $default = null) { return isset($array[$key]) ? $array[$key] : $default; }<\/code><\/li>\n\n\n\n<li><strong>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3068\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u3092\u610f\u8b58\u3059\u308b<\/strong> \u5927\u898f\u6a21\u306a\u9023\u60f3\u914d\u5217\u3092\u6271\u3046\u5834\u5408\u306f\u3001\u5e38\u306b\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3068\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u3092\u610f\u8b58\u3057\u307e\u3057\u3087\u3046\u3002\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u30a4\u30c6\u30ec\u30fc\u30bf\u3084\u30b8\u30a7\u30cd\u30ec\u30fc\u30bf\u3092\u6d3b\u7528\u3057\u3001\u9069\u5207\u306a\u30bf\u30a4\u30df\u30f3\u30b0\u3067\u30e1\u30e2\u30ea\u3092\u89e3\u653e\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-41\">\u3055\u3089\u306a\u308b\u5b66\u7fd2\u30ea\u30bd\u30fc\u30b9\u3068\u5b9f\u8df5\u7684\u306a\u8ab2\u984c<\/h3>\n\n\n\n<p>\u9023\u60f3\u914d\u5217\u306e\u30de\u30b9\u30bf\u30fc\u3092\u76ee\u6307\u3059\u306a\u3089\u3001\u4ee5\u4e0b\u306e\u30ea\u30bd\u30fc\u30b9\u3084\u8ab2\u984c\u306b\u53d6\u308a\u7d44\u3080\u3053\u3068\u3092\u304a\u3059\u3059\u3081\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>\u5b66\u7fd2\u30ea\u30bd\u30fc\u30b9<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.php.net\/manual\/ja\/ref.array.php\">PHP\u516c\u5f0f\u30de\u30cb\u30e5\u30a2\u30eb \u2013 \u914d\u5217\u95a2\u6570<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/phptherightway.com\/\">PHP: The Right Way<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/laracasts.com\/\">Laracasts<\/a> \u2013 PHP\u3084Laravel\u306e\u5b9f\u8df5\u7684\u306a\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb<\/li>\n\n\n\n<li><a href=\"http:\/\/www.phpinternalsbook.com\/\">PHP Internals Book<\/a> \u2013 PHP\u306e\u5185\u90e8\u5b9f\u88c5\u306b\u3064\u3044\u3066\u5b66\u3079\u308b<\/li>\n<\/ul>\n\n\n\n<p><strong>\u5b9f\u8df5\u7684\u306a\u8ab2\u984c<\/strong>:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30c7\u30fc\u30bf\u5909\u63db\u30c4\u30fc\u30eb\u306e\u4f5c\u6210<\/strong> CSV\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u8fbc\u307f\u3001\u9023\u60f3\u914d\u5217\u306b\u5909\u63db\u3057\u3001\u7570\u306a\u308b\u5f62\u5f0f\uff08JSON\u3001XML\u3001HTML\u30c6\u30fc\u30d6\u30eb\u306a\u3069\uff09\u306b\u51fa\u529b\u3059\u308b\u30c4\u30fc\u30eb\u3092\u4f5c\u6210\u3059\u308b<\/li>\n\n\n\n<li><strong>\u8a2d\u5b9a\u7ba1\u7406\u30b7\u30b9\u30c6\u30e0\u306e\u5b9f\u88c5<\/strong> \u968e\u5c64\u7684\u306a\u9023\u60f3\u914d\u5217\u3092\u4f7f\u3063\u3066\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u8a2d\u5b9a\u3092\u7ba1\u7406\u3059\u308b\u30b7\u30b9\u30c6\u30e0\u3092\u69cb\u7bc9\u3059\u308b<\/li>\n\n\n\n<li><strong>API\u30ec\u30b9\u30dd\u30f3\u30b9\u306e\u30e9\u30c3\u30d1\u30fc<\/strong> \u69d8\u3005\u306aAPI\u304b\u3089\u306e\u30ec\u30b9\u30dd\u30f3\u30b9\u3092\u7d71\u4e00\u3055\u308c\u305f\u5f62\u5f0f\u306b\u5909\u63db\u3059\u308b\u30af\u30e9\u30b9\u3092\u8a2d\u8a08\u3059\u308b<\/li>\n\n\n\n<li><strong>\u9ad8\u5ea6\u306a\u30c7\u30fc\u30bf\u5206\u6790<\/strong> \u5927\u91cf\u306e\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u3092\u9023\u60f3\u914d\u5217\u3067\u51e6\u7406\u3057\u3001\u30b0\u30eb\u30fc\u30d7\u5316\u3001\u96c6\u8a08\u3001\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3092\u884c\u3046\u5206\u6790\u30c4\u30fc\u30eb\u3092\u4f5c\u6210\u3059\u308b<\/li>\n<\/ol>\n\n\n\n<p>\u9023\u60f3\u914d\u5217\u306e\u771f\u306e\u529b\u3092\u5f15\u304d\u51fa\u3059\u306b\u306f\u3001\u5b9f\u8df5\u3042\u308b\u306e\u307f\u3067\u3059\u3002\u3053\u306e\u8a18\u4e8b\u3067\u5b66\u3093\u3060\u30c6\u30af\u30cb\u30c3\u30af\u3092\u5b9f\u969b\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u9069\u7528\u3057\u3001\u8a66\u884c\u932f\u8aa4\u3092\u7e70\u308a\u8fd4\u3059\u3053\u3068\u3067\u3001\u3088\u308a\u6df1\u3044\u7406\u89e3\u3068\u9ad8\u3044\u30b9\u30ad\u30eb\u3092\u8eab\u306b\u3064\u3051\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p>PHP\u9023\u60f3\u914d\u5217\u306e\u30de\u30b9\u30bf\u30fc\u3078\u306e\u9053\u306e\u308a\u306f\u9577\u3044\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u304c\u3001\u4e00\u6b69\u4e00\u6b69\u7740\u5b9f\u306b\u9032\u3080\u3053\u3068\u3067\u3001\u3088\u308a\u52b9\u7387\u7684\u3067\u4fdd\u5b88\u6027\u306e\u9ad8\u3044\u3001\u6d17\u7df4\u3055\u308c\u305f\u30b3\u30fc\u30c9\u3092\u66f8\u3051\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002\u9023\u60f3\u914d\u5217\u306f\u3001PHP\u30d7\u30ed\u30b0\u30e9\u30de\u30fc\u306e\u6700\u3082\u91cd\u8981\u306a\u30c4\u30fc\u30eb\u306e\u4e00\u3064\u3067\u3059\u3002\u305c\u3072\u305d\u306e\u53ef\u80fd\u6027\u3092\u6700\u5927\u9650\u306b\u5f15\u304d\u51fa\u3057\u3066\u3001\u3088\u308a\u826f\u3044\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u958b\u767a\u306b\u6d3b\u304b\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Warning: Undefined array key &#8220;is_admin&#8221; in \/home\/xs392991\/dexall.co.jp\/public_html\/articles\/wp-content\/themes\/ &#8230; 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