{"id":726,"date":"2025-08-01T14:31:13","date_gmt":"2025-08-01T05:31:13","guid":{"rendered":"https:\/\/nexive.tech\/?p=726"},"modified":"2025-08-01T14:47:13","modified_gmt":"2025-08-01T05:47:13","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%81%ae%e5%a4%89%e6%95%b0%e3%81%a8%e3%83%87%e3%83%bc%e3%82%bf%e5%9e%8b%e3%82%92%e6%95%b4%e7%90%86%e3%81%97%e3%81%a6","status":"publish","type":"post","link":"https:\/\/nexive.tech\/?p=726","title":{"rendered":"\u3010\u30b5\u30af\u30c3\u3068\u89e3\u8aac\u3011PHP\u306e\u5909\u6570\u3068\u30c7\u30fc\u30bf\u578b\u3092\u6574\u7406\u3057\u3066\u7406\u89e3\u3059\u308b"},"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\u306b\u304a\u3051\u308b\u57fa\u672c\u7684\u306a\u5909\u6570\u306e\u6271\u3044\u65b9\u3092\u6b63\u78ba\u306b\u7406\u89e3\u3067\u304d\u308b<\/li>\n\n\n\n<li>\u30b9\u30ab\u30e9\u578b\u30fb\u914d\u5217\u30fb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306a\u3069\u306e\u4e3b\u8981\u306a\u30c7\u30fc\u30bf\u578b\u3092\u4e00\u89a7\u3067\u6574\u7406<\/li>\n\n\n\n<li>\u5b9f\u52d9\u4e0a\u306e\u578b\u5909\u63db\u3084\u52d5\u7684\u578b\u4ed8\u3051\u306e\u6ce8\u610f\u70b9\u306b\u3082\u89e6\u308c\u308b<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">2. PHP\u306e\u5909\u6570\u3068\u30c7\u30fc\u30bf\u578b\u3068\u306f\uff1f<\/h2>\n\n\n\n<p>PHP\u306f\u52d5\u7684\u578b\u4ed8\u3051\u8a00\u8a9e\u3067\u3042\u308a\u3001\u5909\u6570\u306e\u5ba3\u8a00\u6642\u306b\u660e\u793a\u7684\u306a\u578b\u6307\u5b9a\u306f\u4e0d\u8981\u3067\u3059\u3002<br>\u3059\u3079\u3066\u306e\u5909\u6570\u306f<code>$<\/code>\u3067\u59cb\u307e\u308a\u3001\u4ee3\u5165\u3068\u540c\u6642\u306b\u578b\u304c\u6c7a\u307e\u308a\u307e\u3059\uff08\u4ee3\u5165\u578b\u63a8\u8ad6\uff09\u3002<\/p>\n\n\n\n<p>PHP\u306e\u5909\u6570\u306f\u3001\u5024\u306e\u7a2e\u985e\u306b\u5fdc\u3058\u3066\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30c7\u30fc\u30bf\u578b\u306b\u5206\u985e\u3055\u308c\u307e\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30b9\u30ab\u30e9\u578b\uff08int, float, string, bool\uff09<\/li>\n\n\n\n<li>\u914d\u5217\uff08array\uff09<\/li>\n\n\n\n<li>\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\uff08object\uff09<\/li>\n\n\n\n<li>\u30ea\u30bd\u30fc\u30b9\uff08resource\uff09<\/li>\n\n\n\n<li>NULL\uff08null\uff09<\/li>\n<\/ul>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u578b\u306f\u3001\u95a2\u6570\u306e\u8fd4\u308a\u5024\u3084\u6761\u4ef6\u5206\u5c90\u3001\u914d\u5217\u306e\u30ad\u30fc\u30fb\u5024\u64cd\u4f5c\u306a\u3069\u3001\u65e5\u5e38\u7684\u306a\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u306b\u5bc6\u63a5\u306b\u95a2\u308f\u308a\u307e\u3059\u3002<br>\u7279\u306bPHP 7\u4ee5\u964d\u306f\u578b\u5ba3\u8a00\u306e\u30b5\u30dd\u30fc\u30c8\u304c\u5f37\u5316\u3055\u308c\u3001\u5b9f\u52d9\u3067\u3082\u578b\u5b89\u5168\u6027\u306e\u8003\u616e\u304c\u5fc5\u8981\u306b\u306a\u3063\u3066\u3044\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\">\u57fa\u672c\u7684\u306a\u5909\u6570\u306e\u5ba3\u8a00\u3068\u30b9\u30ab\u30e9\u578b<\/h3>\n\n\n\n<p>\u4ee5\u4e0b\u306f\u3001\u57fa\u672c\u7684\u306a\u30b9\u30ab\u30e9\u578b\uff08int, float, string, bool\uff09\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\/\/ \u6574\u6570\u578b\n$intVar = 10;\necho gettype($intVar); \/\/ int\n\n\/\/ \u6d6e\u52d5\u5c0f\u6570\u70b9\u578b\n$floatVar = 3.14;\necho gettype($floatVar); \/\/ double\n\n\/\/ \u6587\u5b57\u5217\u578b\n$stringVar = \"Hello\";\necho gettype($stringVar); \/\/ string\n\n\/\/ \u30d6\u30fc\u30eb\u578b\n$boolVar = true;\necho gettype($boolVar); \/\/ boolean\n?>\n<\/textarea><\/pre><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2\"><\/path><\/svg><\/span><pre class=\"shiki dark-plus\" style=\"background-color: #1E1E1E\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #D4D4D4\">&lt;?php<\/span><\/span>\n<span class=\"line\"><span style=\"color: #6A9955\">\/\/ \u6574\u6570\u578b<\/span><\/span>\n<span class=\"line\"><span style=\"color: #9CDCFE\">$intVar<\/span><span style=\"color: #D4D4D4\"> = <\/span><span style=\"color: #B5CEA8\">10<\/span><span style=\"color: #D4D4D4\">;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #DCDCAA\">echo<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #DCDCAA\">gettype<\/span><span style=\"color: #D4D4D4\">(<\/span><span style=\"color: #9CDCFE\">$intVar<\/span><span style=\"color: #D4D4D4\">); <\/span><span style=\"color: #6A9955\">\/\/ int<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #6A9955\">\/\/ \u6d6e\u52d5\u5c0f\u6570\u70b9\u578b<\/span><\/span>\n<span class=\"line\"><span style=\"color: #9CDCFE\">$floatVar<\/span><span style=\"color: #D4D4D4\"> = <\/span><span style=\"color: #B5CEA8\">3.14<\/span><span style=\"color: #D4D4D4\">;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #DCDCAA\">echo<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #DCDCAA\">gettype<\/span><span style=\"color: #D4D4D4\">(<\/span><span style=\"color: #9CDCFE\">$floatVar<\/span><span style=\"color: #D4D4D4\">); <\/span><span style=\"color: #6A9955\">\/\/ double<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #6A9955\">\/\/ \u6587\u5b57\u5217\u578b<\/span><\/span>\n<span class=\"line\"><span style=\"color: #9CDCFE\">$stringVar<\/span><span style=\"color: #D4D4D4\"> = <\/span><span style=\"color: #CE9178\">&quot;Hello&quot;<\/span><span style=\"color: #D4D4D4\">;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #DCDCAA\">echo<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #DCDCAA\">gettype<\/span><span style=\"color: #D4D4D4\">(<\/span><span style=\"color: #9CDCFE\">$stringVar<\/span><span style=\"color: #D4D4D4\">); <\/span><span style=\"color: #6A9955\">\/\/ string<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #6A9955\">\/\/ \u30d6\u30fc\u30eb\u578b<\/span><\/span>\n<span class=\"line\"><span style=\"color: #9CDCFE\">$boolVar<\/span><span style=\"color: #D4D4D4\"> = <\/span><span style=\"color: #569CD6\">true<\/span><span style=\"color: #D4D4D4\">;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #DCDCAA\">echo<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #DCDCAA\">gettype<\/span><span style=\"color: #D4D4D4\">(<\/span><span style=\"color: #9CDCFE\">$boolVar<\/span><span style=\"color: #D4D4D4\">); <\/span><span style=\"color: #6A9955\">\/\/ boolean<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">?&gt;<\/span><\/span>\n<span class=\"line\"><\/span><\/code><\/pre><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">\u914d\u5217\u306e\u5ba3\u8a00\u3068\u30a2\u30af\u30bb\u30b9<\/h3>\n\n\n\n<p>\u914d\u5217\u306f\u8907\u6570\u306e\u5024\u3092\u307e\u3068\u3081\u3066\u7ba1\u7406\u3059\u308b\u306e\u306b\u4f7f\u308f\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro cbp-has-line-numbers\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono\" style=\"font-size:.875rem;font-family:Code-Pro-JetBrains-Mono,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;--cbp-line-number-color:#D4D4D4;--cbp-line-number-width:calc(2 * 0.6 * .875rem);line-height:1.25rem;--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:flex;align-items:center;padding:16px 0 0 16px;width:100%;text-align:left;background-color:#1e1e1e\"><span style=\"background:#c7c7c7;padding:0.3rem 0.5rem 0.2rem;border-radius:1rem;font-size:0.8em;line-height:1;height:1.25rem;text-align:center;display:inline-flex;align-items:center;justify-content:center;color:#1e1e1e\">PHP<\/span><\/span><span role=\"button\" tabindex=\"0\" style=\"color:#D4D4D4;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><pre class=\"code-block-pro-copy-button-pre\" aria-hidden=\"true\"><textarea class=\"code-block-pro-copy-button-textarea\" tabindex=\"-1\" aria-hidden=\"true\" readonly>&lt;?php\n\/\/ \u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u914d\u5217\n$array = &#91;\"apple\", \"banana\", \"cherry\"&#93;;\necho $array&#91;1&#93;; \/\/ banana\n\n\/\/ \u9023\u60f3\u914d\u5217\n$assoc = &#91;\"name\" => \"Taro\", \"age\" => 20&#93;;\necho $assoc&#91;\"name\"&#93;; \/\/ Taro\n?>\n<\/textarea><\/pre><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2\"><\/path><\/svg><\/span><pre class=\"shiki dark-plus\" style=\"background-color: #1E1E1E\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #D4D4D4\">&lt;?php<\/span><\/span>\n<span class=\"line\"><span style=\"color: #6A9955\">\/\/ \u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u914d\u5217<\/span><\/span>\n<span class=\"line\"><span style=\"color: #9CDCFE\">$array<\/span><span style=\"color: #D4D4D4\"> = &#91;<\/span><span style=\"color: #CE9178\">&quot;apple&quot;<\/span><span style=\"color: #D4D4D4\">, <\/span><span style=\"color: #CE9178\">&quot;banana&quot;<\/span><span style=\"color: #D4D4D4\">, <\/span><span style=\"color: #CE9178\">&quot;cherry&quot;<\/span><span style=\"color: #D4D4D4\">&#93;;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #DCDCAA\">echo<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #9CDCFE\">$array<\/span><span style=\"color: #D4D4D4\">&#91;<\/span><span style=\"color: #B5CEA8\">1<\/span><span style=\"color: #D4D4D4\">&#93;; <\/span><span style=\"color: #6A9955\">\/\/ banana<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #6A9955\">\/\/ \u9023\u60f3\u914d\u5217<\/span><\/span>\n<span class=\"line\"><span style=\"color: #9CDCFE\">$assoc<\/span><span style=\"color: #D4D4D4\"> = &#91;<\/span><span style=\"color: #CE9178\">&quot;name&quot;<\/span><span style=\"color: #D4D4D4\"> =&gt; <\/span><span style=\"color: #CE9178\">&quot;Taro&quot;<\/span><span style=\"color: #D4D4D4\">, <\/span><span style=\"color: #CE9178\">&quot;age&quot;<\/span><span style=\"color: #D4D4D4\"> =&gt; <\/span><span style=\"color: #B5CEA8\">20<\/span><span style=\"color: #D4D4D4\">&#93;;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #DCDCAA\">echo<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #9CDCFE\">$assoc<\/span><span style=\"color: #D4D4D4\">&#91;<\/span><span style=\"color: #CE9178\">&quot;name&quot;<\/span><span style=\"color: #D4D4D4\">&#93;; <\/span><span style=\"color: #6A9955\">\/\/ Taro<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">?&gt;<\/span><\/span>\n<span class=\"line\"><\/span><\/code><\/pre><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u5b9a\u7fa9\u3068\u5229\u7528<\/h3>\n\n\n\n<p>\u30af\u30e9\u30b9\u3068\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u6271\u3044\u306f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u57fa\u672c\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\nclass User {\n    public $name;\n    function __construct($name) {\n        $this->name = $name;\n    }\n}\n\n$user = new User(\"Hanako\");\necho $user->name; \/\/ Hanako\n?>\n<\/textarea><\/pre><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2\"><\/path><\/svg><\/span><pre class=\"shiki dark-plus\" style=\"background-color: #1E1E1E\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #D4D4D4\">&lt;?php<\/span><\/span>\n<span class=\"line\"><span style=\"color: #569CD6\">class<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #4EC9B0\">User<\/span><span style=\"color: #D4D4D4\"> {<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #569CD6\">public<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #9CDCFE\">$name<\/span><span style=\"color: #D4D4D4\">;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #569CD6\">function<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #DCDCAA\">__construct<\/span><span style=\"color: #D4D4D4\">(<\/span><span style=\"color: #9CDCFE\">$name<\/span><span style=\"color: #D4D4D4\">) {<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #569CD6\">$this<\/span><span style=\"color: #D4D4D4\">-&gt;<\/span><span style=\"color: #9CDCFE\">name<\/span><span style=\"color: #D4D4D4\"> = <\/span><span style=\"color: #9CDCFE\">$name<\/span><span style=\"color: #D4D4D4\">;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    }<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">}<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #9CDCFE\">$user<\/span><span style=\"color: #D4D4D4\"> = <\/span><span style=\"color: #569CD6\">new<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #4EC9B0\">User<\/span><span style=\"color: #D4D4D4\">(<\/span><span style=\"color: #CE9178\">&quot;Hanako&quot;<\/span><span style=\"color: #D4D4D4\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color: #DCDCAA\">echo<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #9CDCFE\">$user<\/span><span style=\"color: #D4D4D4\">-&gt;<\/span><span style=\"color: #9CDCFE\">name<\/span><span style=\"color: #D4D4D4\">; <\/span><span style=\"color: #6A9955\">\/\/ Hanako<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">?&gt;<\/span><\/span>\n<span class=\"line\"><\/span><\/code><\/pre><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">\u578b\u5909\u63db\uff08\u30ad\u30e3\u30b9\u30c8\uff09\u3068\u578b\u306e\u81ea\u52d5\u5909\u63db<\/h3>\n\n\n\n<p>PHP\u3067\u306f\u660e\u793a\u7684\u306a\u30ad\u30e3\u30b9\u30c8\u3068\u6697\u9ed9\u7684\u306a\u578b\u5909\u63db\u306e\u4e21\u65b9\u304c\u5b58\u5728\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro cbp-has-line-numbers\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono\" style=\"font-size:.875rem;font-family:Code-Pro-JetBrains-Mono,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;--cbp-line-number-color:#D4D4D4;--cbp-line-number-width:calc(1 * 0.6 * .875rem);line-height:1.25rem;--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:flex;align-items:center;padding:16px 0 0 16px;width:100%;text-align:left;background-color:#1e1e1e\"><span style=\"background:#c7c7c7;padding:0.3rem 0.5rem 0.2rem;border-radius:1rem;font-size:0.8em;line-height:1;height:1.25rem;text-align:center;display:inline-flex;align-items:center;justify-content:center;color:#1e1e1e\">PHP<\/span><\/span><span role=\"button\" tabindex=\"0\" style=\"color:#D4D4D4;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><pre class=\"code-block-pro-copy-button-pre\" aria-hidden=\"true\"><textarea class=\"code-block-pro-copy-button-textarea\" tabindex=\"-1\" aria-hidden=\"true\" readonly>&lt;?php\n$val = \"123\";\n$intVal = (int)$val;\necho $intVal; \/\/ 123\n\n$sum = \"10\" + 5; \/\/ \u6587\u5b57\u5217\u304c\u81ea\u52d5\u3067\u6570\u5024\u306b\u5909\u63db\u3055\u308c\u308b\nvar_dump($sum); \/\/ int(15)\n?>\n<\/textarea><\/pre><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2\"><\/path><\/svg><\/span><pre class=\"shiki dark-plus\" style=\"background-color: #1E1E1E\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #D4D4D4\">&lt;?php<\/span><\/span>\n<span class=\"line\"><span style=\"color: #9CDCFE\">$val<\/span><span style=\"color: #D4D4D4\"> = <\/span><span style=\"color: #CE9178\">&quot;123&quot;<\/span><span style=\"color: #D4D4D4\">;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #9CDCFE\">$intVal<\/span><span style=\"color: #D4D4D4\"> = (<\/span><span style=\"color: #569CD6\">int<\/span><span style=\"color: #D4D4D4\">)<\/span><span style=\"color: #9CDCFE\">$val<\/span><span style=\"color: #D4D4D4\">;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #DCDCAA\">echo<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #9CDCFE\">$intVal<\/span><span style=\"color: #D4D4D4\">; <\/span><span style=\"color: #6A9955\">\/\/ 123<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #9CDCFE\">$sum<\/span><span style=\"color: #D4D4D4\"> = <\/span><span style=\"color: #CE9178\">&quot;10&quot;<\/span><span style=\"color: #D4D4D4\"> + <\/span><span style=\"color: #B5CEA8\">5<\/span><span style=\"color: #D4D4D4\">; <\/span><span style=\"color: #6A9955\">\/\/ \u6587\u5b57\u5217\u304c\u81ea\u52d5\u3067\u6570\u5024\u306b\u5909\u63db\u3055\u308c\u308b<\/span><\/span>\n<span class=\"line\"><span style=\"color: #DCDCAA\">var_dump<\/span><span style=\"color: #D4D4D4\">(<\/span><span style=\"color: #9CDCFE\">$sum<\/span><span style=\"color: #D4D4D4\">); <\/span><span style=\"color: #6A9955\">\/\/ int(15)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">?&gt;<\/span><\/span>\n<span class=\"line\"><\/span><\/code><\/pre><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">\u578b\u306e\u6bd4\u8f03\u306b\u304a\u3051\u308b\u6ce8\u610f\u70b9<\/h3>\n\n\n\n<p>PHP\u3067\u306f<code>==<\/code>\u3068<code>===<\/code>\u306e\u9055\u3044\u306b\u6ce8\u610f\u304c\u5fc5\u8981\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(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>&lt;?php\nvar_dump(0 == \"0\");    \/\/ bool(true)\nvar_dump(0 === \"0\");   \/\/ bool(false) \u578b\u3082\u6bd4\u8f03\u3055\u308c\u308b\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: #D4D4D4\">&lt;?php<\/span><\/span>\n<span class=\"line\"><span style=\"color: #DCDCAA\">var_dump<\/span><span style=\"color: #D4D4D4\">(<\/span><span style=\"color: #B5CEA8\">0<\/span><span style=\"color: #D4D4D4\"> == <\/span><span style=\"color: #CE9178\">&quot;0&quot;<\/span><span style=\"color: #D4D4D4\">);    <\/span><span style=\"color: #6A9955\">\/\/ bool(true)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #DCDCAA\">var_dump<\/span><span style=\"color: #D4D4D4\">(<\/span><span style=\"color: #B5CEA8\">0<\/span><span style=\"color: #D4D4D4\"> === <\/span><span style=\"color: #CE9178\">&quot;0&quot;<\/span><span style=\"color: #D4D4D4\">);   <\/span><span style=\"color: #6A9955\">\/\/ bool(false) \u578b\u3082\u6bd4\u8f03\u3055\u308c\u308b<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">?&gt;<\/span><\/span>\n<span class=\"line\"><\/span><\/code><\/pre><\/div>\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>\u578b\u6bd4\u8f03\u306b\u304a\u3051\u308b\u8aa4\u89e3<\/strong>\uff1a<code>==<\/code>\u306f\u578b\u3092\u5909\u63db\u3057\u3066\u6bd4\u8f03\u3059\u308b\u305f\u3081\u3001\u610f\u56f3\u3057\u306a\u3044\u4e00\u81f4\u304c\u8d77\u304d\u308b\u3053\u3068\u304c\u3042\u308b\u3002<\/li>\n\n\n\n<li><strong>NULL\u3084\u672a\u5b9a\u7fa9\u5909\u6570\u306e\u6271\u3044<\/strong>\uff1a\u672a\u5b9a\u7fa9\u5909\u6570\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u3068Notice\u30ec\u30d9\u30eb\u306e\u8b66\u544a\u304c\u51fa\u308b\u3002<\/li>\n\n\n\n<li><strong>gettype()\u3067\u306f\u4e0d\u5341\u5206\u306a\u3053\u3068\u3082\u3042\u308b<\/strong>\uff1a\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30af\u30e9\u30b9\u540d\u53d6\u5f97\u306b\u306f<code>get_class()<\/code>\u3092\u4f7f\u3046\u5fc5\u8981\u304c\u3042\u308b\u3002<\/li>\n\n\n\n<li><strong>\u6d6e\u52d5\u5c0f\u6570\u70b9\u306e\u6bd4\u8f03\u8aa4\u5dee<\/strong>\uff1aPHP\u306b\u9650\u3089\u305a\u3001float\u306e\u6bd4\u8f03\u306b\u306f<code>abs($a - $b) &lt; 0.0001<\/code>\u306e\u3088\u3046\u306a\u8aa4\u5dee\u8a31\u5bb9\u304c\u5fc5\u8981\u306a\u5834\u5408\u304c\u3042\u308b\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">5. \u307e\u3068\u3081<\/h2>\n\n\n\n<p>PHP\u306e\u5909\u6570\u3068\u30c7\u30fc\u30bf\u578b\u306f\u3001\u52d5\u7684\u3067\u67d4\u8edf\u306a\u8a2d\u8a08\u3092\u7279\u5fb4\u3068\u3057\u307e\u3059\u3002<br>\u30b9\u30ab\u30e9\u578b\u3001\u914d\u5217\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u57fa\u672c\u3092\u62bc\u3055\u3048\u3001\u6697\u9ed9\u306e\u578b\u5909\u63db\u3084\u6bd4\u8f03\u6f14\u7b97\u306e\u6ce8\u610f\u70b9\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<br>\u307e\u305f\u3001PHP 7\u4ee5\u964d\u306e\u578b\u5ba3\u8a00\u6a5f\u80fd\u3082\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u5b89\u5168\u3067\u660e\u78ba\u306a\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u3053\u3068\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>1. \u672c\u8a18\u4e8b\u306e\u30dd\u30a4\u30f3\u30c8 2. PHP\u306e\u5909\u6570\u3068\u30c7\u30fc\u30bf\u578b\u3068\u306f\uff1f PHP\u306f\u52d5\u7684\u578b\u4ed8\u3051\u8a00\u8a9e\u3067\u3042\u308a\u3001\u5909\u6570\u306e\u5ba3\u8a00\u6642\u306b\u660e\u793a\u7684\u306a\u578b\u6307\u5b9a\u306f\u4e0d\u8981\u3067\u3059\u3002\u3059\u3079\u3066\u306e\u5909\u6570\u306f$\u3067\u59cb\u307e\u308a\u3001\u4ee3\u5165\u3068\u540c\u6642\u306b\u578b\u304c\u6c7a\u307e\u308a\u307e\u3059\uff08\u4ee3\u5165\u578b\u63a8\u8ad6\uff09\u3002 PHP\u306e\u5909\u6570\u306f\u3001\u5024\u306e [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":442,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"swell_btn_cv_data":"","footnotes":""},"categories":[85],"tags":[],"class_list":["post-726","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\/726","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=726"}],"version-history":[{"count":1,"href":"https:\/\/nexive.tech\/index.php?rest_route=\/wp\/v2\/posts\/726\/revisions"}],"predecessor-version":[{"id":727,"href":"https:\/\/nexive.tech\/index.php?rest_route=\/wp\/v2\/posts\/726\/revisions\/727"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nexive.tech\/index.php?rest_route=\/wp\/v2\/media\/442"}],"wp:attachment":[{"href":"https:\/\/nexive.tech\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=726"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nexive.tech\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=726"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nexive.tech\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=726"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}