{"id":814,"date":"2025-08-04T17:18:23","date_gmt":"2025-08-04T08:18:23","guid":{"rendered":"https:\/\/nexive.tech\/?p=814"},"modified":"2025-08-04T17:18:23","modified_gmt":"2025-08-04T08:18:23","slug":"%e3%80%90%e3%82%b5%e3%82%af%e3%83%83%e3%81%a8%e8%a7%a3%e8%aa%ac%e3%80%91php-%e3%83%95%e3%82%a9%e3%83%bc%e3%83%a0%e3%81%ae%e5%a4%9a%e9%a0%85%e7%9b%ae%e3%83%90%e3%83%aa%e3%83%87%e3%83%bc%e3%82%b7","status":"publish","type":"post","link":"https:\/\/nexive.tech\/?p=814","title":{"rendered":"\u3010\u30b5\u30af\u30c3\u3068\u89e3\u8aac\u3011PHP \u30d5\u30a9\u30fc\u30e0\u306e\u591a\u9805\u76ee\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u5b9f\u88c5\u4f8b"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">1. \u672c\u8a18\u4e8b\u306e\u30dd\u30a4\u30f3\u30c8<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>PHP\u3067\u8907\u6570\u5165\u529b\u9805\u76ee\u306e\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u3092\u884c\u3046\u65b9\u6cd5\u3092\u7d39\u4ecb<\/li>\n\n\n\n<li>\u30b5\u30fc\u30d0\u30fc\u30b5\u30a4\u30c9\u3067\u306e\u5b89\u5168\u306a\u30c1\u30a7\u30c3\u30af\u51e6\u7406\u306e\u5b9f\u88c5\u4f8b\u3092\u8a18\u8f09<\/li>\n\n\n\n<li>\u5b9f\u52d9\u3067\u4f7f\u3048\u308b\u69cb\u9020\u5316\u3055\u308c\u305f\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u51e6\u7406\u3092\u89e3\u8aac<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">2. PHP\u30d5\u30a9\u30fc\u30e0\u306e\u591a\u9805\u76ee\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u3068\u306f\uff1f<\/h2>\n\n\n\n<p>Web\u30d5\u30a9\u30fc\u30e0\u3067\u306f\u3001\u540d\u524d\u30fb\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u30fb\u30d1\u30b9\u30ef\u30fc\u30c9\u306a\u3069\u8907\u6570\u9805\u76ee\u306e\u5165\u529b\u3092\u4e00\u62ec\u3057\u3066\u53d7\u3051\u53d6\u308b\u306e\u304c\u4e00\u822c\u7684\u3067\u3059\u3002\u305d\u308c\u305e\u308c\u306e\u9805\u76ee\u306b\u5bfe\u3057\u3001\u7a7a\u6b04\u30c1\u30a7\u30c3\u30af\u3084\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u691c\u8a3c\u3092\u884c\u3046\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u3088\u3046\u306a\u5165\u529b\u5024\u306e\u691c\u8a3c\u51e6\u7406\u3092\u300c\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u300d\u3068\u547c\u3073\u307e\u3059\u3002\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5074\uff08JavaScript\uff09\u3067\u306e\u691c\u8a3c\u3082\u3042\u308a\u307e\u3059\u304c\u3001\u4fe1\u983c\u6027\u78ba\u4fdd\u306e\u305f\u3081\u306b\u306f\u5fc5\u305a\u30b5\u30fc\u30d0\u30fc\u5074\uff08PHP\uff09\u3067\u306e\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u3082\u5fc5\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u5b9f\u52d9\u3067\u306f\u3001\u5165\u529b\u9805\u76ee\u3054\u3068\u306b\u7570\u306a\u308b\u30eb\u30fc\u30eb\uff08\u4f8b\uff1a\u30e1\u30fc\u30eb\u5f62\u5f0f\u3001\u6587\u5b57\u6570\u5236\u9650\u3001\u6570\u5024\u30c1\u30a7\u30c3\u30af\u306a\u3069\uff09\u3092\u4e00\u62ec\u3057\u3066\u51e6\u7406\u3059\u308b\u305f\u3081\u306b\u3001\u914d\u5217\u3084\u30eb\u30fc\u30eb\u5b9a\u7fa9\u306b\u3088\u308b\u67d4\u8edf\u306a\u8a2d\u8a08\u304c\u6c42\u3081\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u672c\u8a18\u4e8b\u3067\u306f\u3001\u8907\u6570\u9805\u76ee\u3092\u5b89\u5168\u306b\u30c1\u30a7\u30c3\u30af\u3057\u3001\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u96c6\u7d04\u3057\u3066\u8868\u793a\u3059\u308b\u57fa\u672c\u7684\u306a\u65b9\u6cd5\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">3. \u8a73\u7d30\u89e3\u8aac<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u30b7\u30f3\u30d7\u30eb\u306a\u591a\u9805\u76ee\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u306e\u4f8b<\/h3>\n\n\n\n<p>\u4ee5\u4e0b\u306f\u3001\u540d\u524d\u30fb\u30e1\u30fc\u30eb\u30fb\u5e74\u9f62\u3092\u5bfe\u8c61\u306b\u3057\u305f\u57fa\u672c\u7684\u306a\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u306e\u4f8b\u3067\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro cbp-has-line-numbers\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono\" style=\"font-size:.875rem;font-family:Code-Pro-JetBrains-Mono,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;--cbp-line-number-color:#D4D4D4;--cbp-line-number-width:calc(2 * 0.6 * .875rem);line-height:1.25rem;--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:flex;align-items:center;padding:16px 0 0 16px;width:100%;text-align:left;background-color:#1e1e1e\"><span style=\"background:#c7c7c7;padding:0.3rem 0.5rem 0.2rem;border-radius:1rem;font-size:0.8em;line-height:1;height:1.25rem;text-align:center;display:inline-flex;align-items:center;justify-content:center;color:#1e1e1e\">PHP<\/span><\/span><span role=\"button\" tabindex=\"0\" style=\"color:#D4D4D4;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><pre class=\"code-block-pro-copy-button-pre\" aria-hidden=\"true\"><textarea class=\"code-block-pro-copy-button-textarea\" tabindex=\"-1\" aria-hidden=\"true\" readonly>&lt;?php\n\/\/ \u5165\u529b\u30c7\u30fc\u30bf\u3092\u60f3\u5b9a\uff08\u901a\u5e38\u306f $_POST \u3092\u4f7f\u7528\uff09\n$data = &#91;\n    'name' => '',\n    'email' => 'test@example',\n    'age' => 'abc'\n&#93;;\n\n$errors = [];\n\n\/\/ name: \u672a\u5165\u529b\u30c1\u30a7\u30c3\u30af\nif (empty($data&#91;'name'&#93;)) {\n    $errors&#91;'name'&#93; = '\u540d\u524d\u306f\u5fc5\u9808\u3067\u3059';\n}\n\n\/\/ email: \u5f62\u5f0f\u30c1\u30a7\u30c3\u30af\nif (!filter_var($data&#91;'email'&#93;, FILTER_VALIDATE_EMAIL)) {\n    $errors&#91;'email'&#93; = '\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306e\u5f62\u5f0f\u304c\u4e0d\u6b63\u3067\u3059';\n}\n\n\/\/ age: \u6570\u5024\u304b\u3069\u3046\u304b\u30c1\u30a7\u30c3\u30af\nif (!ctype_digit($data&#91;'age'&#93;)) {\n    $errors&#91;'age'&#93; = '\u5e74\u9f62\u306f\u6574\u6570\u3067\u5165\u529b\u3057\u3066\u304f\u3060\u3055\u3044';\n}\n\nprint_r($errors);\n<\/textarea><\/pre><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2\"><\/path><\/svg><\/span><pre class=\"shiki dark-plus\" style=\"background-color: #1E1E1E\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #D4D4D4\">&lt;?php<\/span><\/span>\n<span class=\"line\"><span style=\"color: #6A9955\">\/\/ \u5165\u529b\u30c7\u30fc\u30bf\u3092\u60f3\u5b9a\uff08\u901a\u5e38\u306f $_POST \u3092\u4f7f\u7528\uff09<\/span><\/span>\n<span class=\"line\"><span style=\"color: #9CDCFE\">$data<\/span><span style=\"color: #D4D4D4\"> = &#91;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #CE9178\">&#39;name&#39;<\/span><span style=\"color: #D4D4D4\"> =&gt; <\/span><span style=\"color: #CE9178\">&#39;&#39;<\/span><span style=\"color: #D4D4D4\">,<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #CE9178\">&#39;email&#39;<\/span><span style=\"color: #D4D4D4\"> =&gt; <\/span><span style=\"color: #CE9178\">&#39;test@example&#39;<\/span><span style=\"color: #D4D4D4\">,<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #CE9178\">&#39;age&#39;<\/span><span style=\"color: #D4D4D4\"> =&gt; <\/span><span style=\"color: #CE9178\">&#39;abc&#39;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">&#93;;<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #9CDCFE\">$errors<\/span><span style=\"color: #D4D4D4\"> = [];<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #6A9955\">\/\/ name: \u672a\u5165\u529b\u30c1\u30a7\u30c3\u30af<\/span><\/span>\n<span class=\"line\"><span style=\"color: #C586C0\">if<\/span><span style=\"color: #D4D4D4\"> (<\/span><span style=\"color: #DCDCAA\">empty<\/span><span style=\"color: #D4D4D4\">(<\/span><span style=\"color: #9CDCFE\">$data<\/span><span style=\"color: #D4D4D4\">&#91;<\/span><span style=\"color: #CE9178\">&#39;name&#39;<\/span><span style=\"color: #D4D4D4\">&#93;)) {<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #9CDCFE\">$errors<\/span><span style=\"color: #D4D4D4\">&#91;<\/span><span style=\"color: #CE9178\">&#39;name&#39;<\/span><span style=\"color: #D4D4D4\">&#93; = <\/span><span style=\"color: #CE9178\">&#39;\u540d\u524d\u306f\u5fc5\u9808\u3067\u3059&#39;<\/span><span style=\"color: #D4D4D4\">;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">}<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #6A9955\">\/\/ email: \u5f62\u5f0f\u30c1\u30a7\u30c3\u30af<\/span><\/span>\n<span class=\"line\"><span style=\"color: #C586C0\">if<\/span><span style=\"color: #D4D4D4\"> (!<\/span><span style=\"color: #DCDCAA\">filter_var<\/span><span style=\"color: #D4D4D4\">(<\/span><span style=\"color: #9CDCFE\">$data<\/span><span style=\"color: #D4D4D4\">&#91;<\/span><span style=\"color: #CE9178\">&#39;email&#39;<\/span><span style=\"color: #D4D4D4\">&#93;, FILTER_VALIDATE_EMAIL)) {<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #9CDCFE\">$errors<\/span><span style=\"color: #D4D4D4\">&#91;<\/span><span style=\"color: #CE9178\">&#39;email&#39;<\/span><span style=\"color: #D4D4D4\">&#93; = <\/span><span style=\"color: #CE9178\">&#39;\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306e\u5f62\u5f0f\u304c\u4e0d\u6b63\u3067\u3059&#39;<\/span><span style=\"color: #D4D4D4\">;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">}<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #6A9955\">\/\/ age: \u6570\u5024\u304b\u3069\u3046\u304b\u30c1\u30a7\u30c3\u30af<\/span><\/span>\n<span class=\"line\"><span style=\"color: #C586C0\">if<\/span><span style=\"color: #D4D4D4\"> (!<\/span><span style=\"color: #DCDCAA\">ctype_digit<\/span><span style=\"color: #D4D4D4\">(<\/span><span style=\"color: #9CDCFE\">$data<\/span><span style=\"color: #D4D4D4\">&#91;<\/span><span style=\"color: #CE9178\">&#39;age&#39;<\/span><span style=\"color: #D4D4D4\">&#93;)) {<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #9CDCFE\">$errors<\/span><span style=\"color: #D4D4D4\">&#91;<\/span><span style=\"color: #CE9178\">&#39;age&#39;<\/span><span style=\"color: #D4D4D4\">&#93; = <\/span><span style=\"color: #CE9178\">&#39;\u5e74\u9f62\u306f\u6574\u6570\u3067\u5165\u529b\u3057\u3066\u304f\u3060\u3055\u3044&#39;<\/span><span style=\"color: #D4D4D4\">;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">}<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #DCDCAA\">print_r<\/span><span style=\"color: #D4D4D4\">(<\/span><span style=\"color: #9CDCFE\">$errors<\/span><span style=\"color: #D4D4D4\">);<\/span><\/span>\n<span class=\"line\"><\/span><\/code><\/pre><\/div>\n\n\n\n<p><strong>\u51fa\u529b\u4f8b\uff1a<\/strong><\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro cbp-has-line-numbers\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono\" style=\"font-size:.875rem;font-family:Code-Pro-JetBrains-Mono,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;--cbp-line-number-color:#D4D4D4;--cbp-line-number-width:calc(1 * 0.6 * .875rem);line-height:1.25rem;--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:flex;align-items:center;padding:16px 0 0 16px;width:100%;text-align:left;background-color:#1e1e1e\"><span style=\"background:#c7c7c7;padding:0.3rem 0.5rem 0.2rem;border-radius:1rem;font-size:0.8em;line-height:1;height:1.25rem;text-align:center;display:inline-flex;align-items:center;justify-content:center;color:#1e1e1e\">PHP<\/span><\/span><span role=\"button\" tabindex=\"0\" style=\"color:#D4D4D4;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><pre class=\"code-block-pro-copy-button-pre\" aria-hidden=\"true\"><textarea class=\"code-block-pro-copy-button-textarea\" tabindex=\"-1\" aria-hidden=\"true\" readonly>Array\n(\n    &#91;name&#93; => \u540d\u524d\u306f\u5fc5\u9808\u3067\u3059\n    &#91;email&#93; => \u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306e\u5f62\u5f0f\u304c\u4e0d\u6b63\u3067\u3059\n    &#91;age&#93; => \u5e74\u9f62\u306f\u6574\u6570\u3067\u5165\u529b\u3057\u3066\u304f\u3060\u3055\u3044\n)\n<\/textarea><\/pre><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2\"><\/path><\/svg><\/span><pre class=\"shiki dark-plus\" style=\"background-color: #1E1E1E\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #569CD6\">Array<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">(<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    &#91;name&#93; =&gt; \u540d\u524d\u306f\u5fc5\u9808\u3067\u3059<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    &#91;email&#93; =&gt; \u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306e\u5f62\u5f0f\u304c\u4e0d\u6b63\u3067\u3059<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    &#91;age&#93; =&gt; \u5e74\u9f62\u306f\u6574\u6570\u3067\u5165\u529b\u3057\u3066\u304f\u3060\u3055\u3044<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">)<\/span><\/span>\n<span class=\"line\"><\/span><\/code><\/pre><\/div>\n\n\n\n<p>\u3053\u306e\u3088\u3046\u306b\u3001\u9805\u76ee\u3054\u3068\u306e\u30eb\u30fc\u30eb\u306b\u5fdc\u3058\u3066\u500b\u5225\u306b\u30c1\u30a7\u30c3\u30af\u3057\u3001\u30a8\u30e9\u30fc\u3092\u914d\u5217\u3067\u7ba1\u7406\u3059\u308b\u69cb\u6210\u304c\u57fa\u672c\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u69cb\u9020\u5316\u3055\u308c\u305f\u30eb\u30fc\u30eb\u5b9a\u7fa9\u306b\u3088\u308b\u67d4\u8edf\u306a\u8a2d\u8a08<\/h3>\n\n\n\n<p>\u3088\u308a\u5b9f\u52d9\u7684\u306b\u306f\u3001\u30eb\u30fc\u30eb\u3092\u914d\u5217\u3067\u5b9a\u7fa9\u3057\u3066\u52d5\u7684\u306b\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u3092\u9069\u7528\u3059\u308b\u8a2d\u8a08\u304c\u597d\u307e\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro cbp-has-line-numbers\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono\" style=\"font-size:.875rem;font-family:Code-Pro-JetBrains-Mono,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;--cbp-line-number-color:#D4D4D4;--cbp-line-number-width:calc(2 * 0.6 * .875rem);line-height:1.25rem;--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:flex;align-items:center;padding:16px 0 0 16px;width:100%;text-align:left;background-color:#1e1e1e\"><span style=\"background:#c7c7c7;padding:0.3rem 0.5rem 0.2rem;border-radius:1rem;font-size:0.8em;line-height:1;height:1.25rem;text-align:center;display:inline-flex;align-items:center;justify-content:center;color:#1e1e1e\">PHP<\/span><\/span><span role=\"button\" tabindex=\"0\" style=\"color:#D4D4D4;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><pre class=\"code-block-pro-copy-button-pre\" aria-hidden=\"true\"><textarea class=\"code-block-pro-copy-button-textarea\" tabindex=\"-1\" aria-hidden=\"true\" readonly>&lt;?php\n$rules = [\n    'name' => &#91;'required'&#93;,\n    'email' => &#91;'required', 'email'&#93;,\n    'age' => &#91;'required', 'integer'&#93;\n];\n\n$data = &#91;\n    'name' => '',\n    'email' => 'abc@',\n    'age' => '20a'\n&#93;;\n\n$errors = [];\n\nforeach ($rules as $field => $ruleList) {\n    $value = $data&#91;$field&#93; ?? '';\n\n    foreach ($ruleList as $rule) {\n        if ($rule === 'required' &amp;&amp; $value === '') {\n            $errors&#91;$field&#93; = '\u5fc5\u9808\u9805\u76ee\u3067\u3059';\n            break;\n        }\n\n        if ($rule === 'email' &amp;&amp; !filter_var($value, FILTER_VALIDATE_EMAIL)) {\n            $errors&#91;$field&#93; = '\u30e1\u30fc\u30eb\u5f62\u5f0f\u304c\u4e0d\u6b63\u3067\u3059';\n            break;\n        }\n\n        if ($rule === 'integer' &amp;&amp; !ctype_digit($value)) {\n            $errors&#91;$field&#93; = '\u6574\u6570\u3067\u5165\u529b\u3057\u3066\u304f\u3060\u3055\u3044';\n            break;\n        }\n    }\n}\n\nprint_r($errors);\n<\/textarea><\/pre><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2\"><\/path><\/svg><\/span><pre class=\"shiki dark-plus\" style=\"background-color: #1E1E1E\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #D4D4D4\">&lt;?php<\/span><\/span>\n<span class=\"line\"><span style=\"color: #9CDCFE\">$rules<\/span><span style=\"color: #D4D4D4\"> = [<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #CE9178\">&#39;name&#39;<\/span><span style=\"color: #D4D4D4\"> =&gt; &#91;<\/span><span style=\"color: #CE9178\">&#39;required&#39;<\/span><span style=\"color: #D4D4D4\">&#93;,<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #CE9178\">&#39;email&#39;<\/span><span style=\"color: #D4D4D4\"> =&gt; &#91;<\/span><span style=\"color: #CE9178\">&#39;required&#39;<\/span><span style=\"color: #D4D4D4\">, <\/span><span style=\"color: #CE9178\">&#39;email&#39;<\/span><span style=\"color: #D4D4D4\">&#93;,<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #CE9178\">&#39;age&#39;<\/span><span style=\"color: #D4D4D4\"> =&gt; &#91;<\/span><span style=\"color: #CE9178\">&#39;required&#39;<\/span><span style=\"color: #D4D4D4\">, <\/span><span style=\"color: #CE9178\">&#39;integer&#39;<\/span><span style=\"color: #D4D4D4\">&#93;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">];<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #9CDCFE\">$data<\/span><span style=\"color: #D4D4D4\"> = &#91;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #CE9178\">&#39;name&#39;<\/span><span style=\"color: #D4D4D4\"> =&gt; <\/span><span style=\"color: #CE9178\">&#39;&#39;<\/span><span style=\"color: #D4D4D4\">,<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #CE9178\">&#39;email&#39;<\/span><span style=\"color: #D4D4D4\"> =&gt; <\/span><span style=\"color: #CE9178\">&#39;abc@&#39;<\/span><span style=\"color: #D4D4D4\">,<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #CE9178\">&#39;age&#39;<\/span><span style=\"color: #D4D4D4\"> =&gt; <\/span><span style=\"color: #CE9178\">&#39;20a&#39;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">&#93;;<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #9CDCFE\">$errors<\/span><span style=\"color: #D4D4D4\"> = [];<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #C586C0\">foreach<\/span><span style=\"color: #D4D4D4\"> (<\/span><span style=\"color: #9CDCFE\">$rules<\/span><span style=\"color: #D4D4D4\"> as <\/span><span style=\"color: #9CDCFE\">$field<\/span><span style=\"color: #D4D4D4\"> =&gt; <\/span><span style=\"color: #9CDCFE\">$ruleList<\/span><span style=\"color: #D4D4D4\">) {<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #9CDCFE\">$value<\/span><span style=\"color: #D4D4D4\"> = <\/span><span style=\"color: #9CDCFE\">$data<\/span><span style=\"color: #D4D4D4\">&#91;<\/span><span style=\"color: #9CDCFE\">$field<\/span><span style=\"color: #D4D4D4\">&#93; ?? <\/span><span style=\"color: #CE9178\">&#39;&#39;<\/span><span style=\"color: #D4D4D4\">;<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #C586C0\">foreach<\/span><span style=\"color: #D4D4D4\"> (<\/span><span style=\"color: #9CDCFE\">$ruleList<\/span><span style=\"color: #D4D4D4\"> as <\/span><span style=\"color: #9CDCFE\">$rule<\/span><span style=\"color: #D4D4D4\">) {<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #C586C0\">if<\/span><span style=\"color: #D4D4D4\"> (<\/span><span style=\"color: #9CDCFE\">$rule<\/span><span style=\"color: #D4D4D4\"> === <\/span><span style=\"color: #CE9178\">&#39;required&#39;<\/span><span style=\"color: #D4D4D4\"> &amp;&amp; <\/span><span style=\"color: #9CDCFE\">$value<\/span><span style=\"color: #D4D4D4\"> === <\/span><span style=\"color: #CE9178\">&#39;&#39;<\/span><span style=\"color: #D4D4D4\">) {<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">            <\/span><span style=\"color: #9CDCFE\">$errors<\/span><span style=\"color: #D4D4D4\">&#91;<\/span><span style=\"color: #9CDCFE\">$field<\/span><span style=\"color: #D4D4D4\">&#93; = <\/span><span style=\"color: #CE9178\">&#39;\u5fc5\u9808\u9805\u76ee\u3067\u3059&#39;<\/span><span style=\"color: #D4D4D4\">;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">            <\/span><span style=\"color: #C586C0\">break<\/span><span style=\"color: #D4D4D4\">;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        }<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #C586C0\">if<\/span><span style=\"color: #D4D4D4\"> (<\/span><span style=\"color: #9CDCFE\">$rule<\/span><span style=\"color: #D4D4D4\"> === <\/span><span style=\"color: #CE9178\">&#39;email&#39;<\/span><span style=\"color: #D4D4D4\"> &amp;&amp; !<\/span><span style=\"color: #DCDCAA\">filter_var<\/span><span style=\"color: #D4D4D4\">(<\/span><span style=\"color: #9CDCFE\">$value<\/span><span style=\"color: #D4D4D4\">, FILTER_VALIDATE_EMAIL)) {<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">            <\/span><span style=\"color: #9CDCFE\">$errors<\/span><span style=\"color: #D4D4D4\">&#91;<\/span><span style=\"color: #9CDCFE\">$field<\/span><span style=\"color: #D4D4D4\">&#93; = <\/span><span style=\"color: #CE9178\">&#39;\u30e1\u30fc\u30eb\u5f62\u5f0f\u304c\u4e0d\u6b63\u3067\u3059&#39;<\/span><span style=\"color: #D4D4D4\">;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">            <\/span><span style=\"color: #C586C0\">break<\/span><span style=\"color: #D4D4D4\">;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        }<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #C586C0\">if<\/span><span style=\"color: #D4D4D4\"> (<\/span><span style=\"color: #9CDCFE\">$rule<\/span><span style=\"color: #D4D4D4\"> === <\/span><span style=\"color: #CE9178\">&#39;integer&#39;<\/span><span style=\"color: #D4D4D4\"> &amp;&amp; !<\/span><span style=\"color: #DCDCAA\">ctype_digit<\/span><span style=\"color: #D4D4D4\">(<\/span><span style=\"color: #9CDCFE\">$value<\/span><span style=\"color: #D4D4D4\">)) {<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">            <\/span><span style=\"color: #9CDCFE\">$errors<\/span><span style=\"color: #D4D4D4\">&#91;<\/span><span style=\"color: #9CDCFE\">$field<\/span><span style=\"color: #D4D4D4\">&#93; = <\/span><span style=\"color: #CE9178\">&#39;\u6574\u6570\u3067\u5165\u529b\u3057\u3066\u304f\u3060\u3055\u3044&#39;<\/span><span style=\"color: #D4D4D4\">;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">            <\/span><span style=\"color: #C586C0\">break<\/span><span style=\"color: #D4D4D4\">;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        }<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    }<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">}<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #DCDCAA\">print_r<\/span><span style=\"color: #D4D4D4\">(<\/span><span style=\"color: #9CDCFE\">$errors<\/span><span style=\"color: #D4D4D4\">);<\/span><\/span>\n<span class=\"line\"><\/span><\/code><\/pre><\/div>\n\n\n\n<p>\u3053\u306e\u65b9\u6cd5\u3067\u306f\u30eb\u30fc\u30eb\u304c\u5206\u96e2\u3055\u308c\u3066\u3044\u308b\u305f\u3081\u3001\u518d\u5229\u7528\u6027\u3084\u62e1\u5f35\u6027\u306b\u512a\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">4. \u3088\u304f\u3042\u308b\u30df\u30b9\u30fb\u8aa4\u89e3\u30fb\u843d\u3068\u3057\u7a74<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>filter_var\u306e\u578b\u5909\u63db\u306b\u6ce8\u610f<\/strong>\uff1a<code>FILTER_VALIDATE_INT<\/code>\u306f\u6570\u5024\u6587\u5b57\u5217\u3067\u306a\u304f\u6570\u5024\u578b\u3068\u5224\u5b9a\u3055\u308c\u308b\u305f\u3081\u3001\u5165\u529b\u304c&#8221;20&#8243;\u306e\u3088\u3046\u306a\u6587\u5b57\u5217\u3067\u306ffalse\u306b\u306a\u308a\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>\u672a\u5b9a\u7fa9\u30ad\u30fc\u306e\u6271\u3044<\/strong>\uff1a<code>$_POST['key']<\/code>\u306e\u3088\u3046\u306b\u76f4\u63a5\u30a2\u30af\u30bb\u30b9\u3059\u308b\u3068\u3001\u672a\u5b9a\u7fa9\u3067\u8b66\u544a\u304c\u51fa\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<code>??<\/code>\uff08null\u5408\u4f53\u6f14\u7b97\u5b50\uff09\u3092\u4f7f\u3046\u3068\u5b89\u5168\u3067\u3059\u3002<\/li>\n\n\n\n<li><strong>\u591a\u8a00\u8a9e\u5bfe\u5fdc<\/strong>\uff1a\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u6587\u8a00\u3092\u76f4\u66f8\u304d\u3059\u308b\u3068\u591a\u8a00\u8a9e\u5316\u304c\u56f0\u96e3\u306b\u306a\u308a\u307e\u3059\u3002\u5b9f\u52d9\u3067\u306f\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u5316\u3092\u691c\u8a0e\u3059\u3079\u304d\u3067\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">5. \u307e\u3068\u3081<\/h2>\n\n\n\n<p>PHP\u3067\u306e\u591a\u9805\u76ee\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u306f\u3001\u30eb\u30fc\u30eb\u5b9a\u7fa9\u3068\u30c1\u30a7\u30c3\u30af\u51e6\u7406\u306e\u5206\u96e2\u306b\u3088\u308a\u67d4\u8edf\u306a\u8a2d\u8a08\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<p>filter_var\u3084ctype_digit\u306a\u3069\u6a19\u6e96\u95a2\u6570\u3092\u6d3b\u7528\u3057\u3064\u3064\u3001\u672a\u5b9a\u7fa9\u30ad\u30fc\u3084\u51fa\u529b\u5f62\u5f0f\u306b\u3082\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002\u5b9f\u52d9\u3067\u306f\u30eb\u30fc\u30eb\u306e\u7ba1\u7406\u6027\u3068\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u518d\u5229\u7528\u6027\u304c\u91cd\u8981\u306a\u89b3\u70b9\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>1. \u672c\u8a18\u4e8b\u306e\u30dd\u30a4\u30f3\u30c8 2. PHP\u30d5\u30a9\u30fc\u30e0\u306e\u591a\u9805\u76ee\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u3068\u306f\uff1f Web\u30d5\u30a9\u30fc\u30e0\u3067\u306f\u3001\u540d\u524d\u30fb\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u30fb\u30d1\u30b9\u30ef\u30fc\u30c9\u306a\u3069\u8907\u6570\u9805\u76ee\u306e\u5165\u529b\u3092\u4e00\u62ec\u3057\u3066\u53d7\u3051\u53d6\u308b\u306e\u304c\u4e00\u822c\u7684\u3067\u3059\u3002\u305d\u308c\u305e\u308c\u306e\u9805\u76ee\u306b\u5bfe\u3057\u3001\u7a7a\u6b04\u30c1\u30a7\u30c3\u30af\u3084\u30d5\u30a9\u30fc [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":891,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"swell_btn_cv_data":"","footnotes":""},"categories":[85],"tags":[],"class_list":["post-814","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-php"],"_links":{"self":[{"href":"https:\/\/nexive.tech\/index.php?rest_route=\/wp\/v2\/posts\/814","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nexive.tech\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nexive.tech\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nexive.tech\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/nexive.tech\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=814"}],"version-history":[{"count":2,"href":"https:\/\/nexive.tech\/index.php?rest_route=\/wp\/v2\/posts\/814\/revisions"}],"predecessor-version":[{"id":892,"href":"https:\/\/nexive.tech\/index.php?rest_route=\/wp\/v2\/posts\/814\/revisions\/892"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nexive.tech\/index.php?rest_route=\/wp\/v2\/media\/891"}],"wp:attachment":[{"href":"https:\/\/nexive.tech\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=814"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nexive.tech\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=814"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nexive.tech\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=814"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}