{"id":5003,"date":"2022-06-06T15:57:57","date_gmt":"2022-06-06T06:57:57","guid":{"rendered":"https:\/\/column.prime-strategy.co.jp\/?p=5003"},"modified":"2026-02-17T02:08:37","modified_gmt":"2026-02-16T17:08:37","slug":"post-5003","status":"publish","type":"post","link":"https:\/\/kusanagi.tokyo\/column\/archives\/column_5003","title":{"rendered":"PHP\u91cd\u93ae\u3000\u5ee3\u5ddd\u985e\u6c0f\u306e\u30b3\u30e9\u30e0\u7b2c\uff12\uff14\u56de\u300cPHP\u306e\u6700\u65b0\u72b6\u6cc1\uff1aPHP 8.2\u958b\u767a\u672c\u683c\u30b9\u30bf\u30fc\u30c8\u300d"},"content":{"rendered":"\n

\u6691\u3055\u3092\u611f\u3058\u308b\u65e5\u3005\u3082\u591a\u304f\u306a\u3063\u3066\u304d\u307e\u3057\u305f\uff0e\u6b21\u306e\u30de\u30a4\u30ca\u30fc\u30d0\u30fc\u30b8\u30e7\u30f3\u3067\u3042\u308bPHP 8.2\u306b\u95a2\u3057\u3066\uff0c\u30ea\u30ea\u30fc\u30b9\u30de\u30cd\u30fc\u30b8\u30e3\u304c\u6c7a\u307e\u308b\u306a\u3069\uff0c\u958b\u767a\u304c\u672c\u683c\u5316\u3057\u3066\u3044\u307e\u3059\uff0e<\/p>\n\n\n\n

\u672c\u7a3f\u3067\u306f\uff0c\u4e3b\u306bPHP 8.2\u306e\u958b\u767a\u4f53\u5236\u3068\u63d0\u6848\u3055\u308c\u3066\u3044\u308b\u6a5f\u80fd\u306e\u7d39\u4ecb\u3092\u884c\u3044\u307e\u3059\uff0e<\/p>\n\n\n\n

<\/span>PHP Foundation\u306b\u304a\u3051\u308b\u30b5\u30dd\u30fc\u30c8\u5bfe\u8c61\u306e\u958b\u767a\u8005\u304c\u6c7a\u307e\u308b<\/span><\/h3>\n\n\n\n

\u672c\u9023\u8f09\uff0821\u56de\uff0c22\u56de\uff09\u3067\u7d39\u4ecb\u3057\u305fPHP\u958b\u767a\u8005\u3092\u652f\u63f4\u3059\u308b\u56e3\u4f53The PHP Foundation\u306b\u304a\u3044\u3066\uff0c\u652f\u63f4\u5bfe\u8c61\u3068\u306a\u308b\u958b\u767a\u8005\u306e\u9078\u5b9a\u304c\u884c\u308f\u308c\u3066\u3044\u307e\u3057\u305f\u304c\uff0c\u7b2c\u4e00\u5f3e\u3068\u3057\u3066\uff16\u540d\u306e\u958b\u767a\u8005\u304c\u9078\u5b9a\u3055\u308c\u307e\u3057\u305f\uff0e\u9078\u5b9a\u3055\u308c\u305f\u958b\u767a\u8005\u306b\u306f\uff0cPHP\u672c\u4f53\u306e\u958b\u767a\u306b\u5fc5\u8981\u306a\u6642\u9593\u7684\u30ea\u30ea\u30fc\u30b9\u3092\u78ba\u4fdd\u3059\u308b\u305f\u3081\u306e\u8cc7\u91d1\u304c\u63d0\u4f9b\u3055\u308c\u307e\u3059\uff0e\u524d\u8a186\u540d\u306b\u306f\uff0c\u5c06\u6765\u306e\u30b3\u30a2\u958b\u767a\u8005\u3092\u80b2\u6210\u3059\u308b\u76ee\u7684\u3067\uff0c\u6bd4\u8f03\u7684\u77e5\u540d\u5ea6\u304c\u4f4e\u3044\u958b\u767a\u8005\u3082\u542b\u307e\u308c\u307e\u3059\u304c\uff0c\u6ce8\u76ee\u3059\u3079\u304d\u306fPHP\u306e\u30b3\u30a2\u958b\u767a\u8005\u3067\u3042\u308bDerick Rethans\u6c0f\u304c\u542b\u307e\u308c\u3066\u3044\u308b\u3053\u3068\u3067\u3059\uff0e\u540c\u6c0f\u304c\u5f93\u6765\u4ee5\u4e0a\u306bPHP\u30b3\u30a2\u958b\u767a\u306b\u5f93\u4e8b\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308b\u3053\u3068\u3067\uff0cPHP\u306e\u958b\u767a\u306e\u52a0\u901f\u30fb\u5b89\u5b9a\u5316\u304c\u671f\u5f85\u3067\u304d\u307e\u3059\uff0e\u306a\u304a\uff0c\u540c\u6c0f\u306f\u540c\u56e3\u4f53\u306e\u904b\u55b6\u306b\u53c2\u52a0\u3057\u3066\u3044\u307e\u3057\u305f\u304c\uff0c\u652f\u63f4\u5bfe\u8c61\u3068\u306a\u3063\u305f\u3053\u3068\u3067\uff0c\u904b\u55b6\u304b\u3089\u306f\u5916\u308c\u3066\u3044\u307e\u3059\uff0e<\/p>\n\n\n\n

<\/span>PHP 8.2\u306e\u30ea\u30ea\u30fc\u30b9\u30de\u30cd\u30fc\u30b8\u30e3\u3068\u958b\u767a\u30b9\u30b1\u30b8\u30e5\u30fc\u30eb\u304c\u6c7a\u307e\u308b<\/span><\/h3>\n\n\n\n

\u3000PHP 8.2\u306e\u30ea\u30ea\u30fc\u30b9\u30de\u30cd\u30fc\u30b8\u30e3\u304c\uff0c\u6295\u7968\u306b\u3088\u308aPierrick Charron\u6c0f\u3068Sergey Panteleev \u6c0f\u306e\uff12\u540d\u306b\u6c7a\u307e\u308a\u307e\u3057\u305f\uff0e\u307e\u305f\uff0cPHP 8.1\u306e\u30ea\u30ea\u30fc\u30b9\u30de\u30cd\u30fc\u30b8\u30e3\u3067\u3042\u308bBen Ramsey\u6c0f\u304c\u30e1\u30f3\u30bf\u30fc\u3068\u3057\u3066\u30ea\u30ea\u30fc\u30b9\u30de\u30cd\u30fc\u30b8\u30e3\u3092\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3057\u305f\uff0e<\/p>\n\n\n\n

\u3000\u30ea\u30ea\u30fc\u30b9\u306b\u5411\u3051\u305f\u958b\u767a\u30b9\u30b1\u30b8\u30e5\u30fc\u30eb\u3082\u5b9a\u7fa9\u3055\u308c\u307e\u3057\u305f\uff0e\u30ea\u30ea\u30fc\u30b9\u4e88\u5b9a\u65e5\u306f\uff0c2022\u5e7411\u670824\u65e5\u3068\u306a\u3063\u3066\u3044\u307e\u3059\uff0e\u3053\u308c\u306b\u5411\u3051\u3066\uff0c\u307e\u305a\uff0c6\u6708\u4ee5\u964d\u03b1\u7248\u3092\u30ea\u30ea\u30fc\u30b9\u3057\uff0c7\u670819\u65e5\u306bFeature freeze\uff08\u30ea\u30ea\u30fc\u30b9\u7248\u306b\u63a1\u7528\u3059\u308b\u6a5f\u80fd\u3092\u6c7a\u5b9a\u3059\u308b\uff09\u3092\u884c\u3044\u307e\u3059\uff0ePHP 8.2\u306b\u65b0\u898f\u306b\u63a1\u7528\u3055\u308c\u308b\u6a5f\u80fd\u306f\uff0c\u3053\u306e\u6642\u70b9\u307e\u3067\u306b\u6c7a\u5b9a\u3055\u308c\u307e\u3059\uff0e\u3053\u306e\u5f8c\u306f\uff0c\u6a5f\u80fd\u3092\u5b89\u5b9a\u5316\u3055\u305b\u308b\u30d5\u30a7\u30fc\u30ba\u3068\u306a\u308a\uff0c7\u670821\u65e5\u4ee5\u964d\u306b\u30d9\u30fc\u30bf\u7248\uff0c9\u6708\u304b\u3089\u30ea\u30ea\u30fc\u30b9\u5019\u88dc\u7248\u3092\u305d\u308c\u305e\u308c\u8907\u6570\u56de\u30ea\u30ea\u30fc\u30b9\u3057\u3066\uff0c\u30d0\u30b0\u3092\u53d6\u308a\u9664\u3044\u305f\u5f8c\uff0c\u6b63\u5f0f\u30ea\u30ea\u30fc\u30b9\u3068\u306a\u308a\u307e\u3059\uff0e\u306a\u304a\uff0c\u30ea\u30ea\u30fc\u30b9\u65e5\u3092\u542b\u3080\u958b\u767a\u30b9\u30b1\u30b8\u30e5\u30fc\u30eb\u306f\uff0c\u958b\u767a\u306e\u9032\u6357\u306b\u3088\u308a\u5909\u308f\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\uff0e<\/p>\n\n\n\n

\u3000\u4ee5\u4e0b\uff0c\u524d\u56de\u307e\u3067\u306b\u5f15\u304d\u7d9a\u304dPHP 8.2\u3067\u63a1\u7528\u3055\u308c\u308b\u4e88\u5b9a\u306e\u65b0\u6a5f\u80fd\u304a\u3088\u3073\u5909\u66f4\u70b9\u306b\u3064\u3044\u3066\u7d39\u4ecb\u3057\u307e\u3059\uff0e<\/p>\n\n\n\n

\u3000<\/p>\n\n\n\n

<\/span>\u52d5\u7684\u30d7\u30ed\u30d1\u30c6\u30a3\u306e\u5ec3\u6b62\uff08https:\/\/wiki.php.net\/rfc\/deprecate_dynamic_properties\uff09\uff08\u88dc\u8db3\uff09<\/span><\/h3>\n\n\n\n

\u52d5\u7684\u30d7\u30ed\u30d1\u30c6\u30a3\u306e\u5ec3\u6b62\u306b\u3064\u3044\u3066\u306f\uff0c\u672c\u9023\u8f09\u306e22\u56de\u3067\u7d39\u4ecb\u3057\u307e\u3057\u305f\uff0e\u5f93\u6765\u306ePHP\u3067\u306f\uff0c\u3042\u308b\u30af\u30e9\u30b9\u306b\u304a\u3044\u3066\u5ba3\u8a00\u3055\u308c\u3066\u3044\u306a\u3044\u30d7\u30ed\u30d1\u30c6\u30a3\u306b\u5024\u304c\u4ee3\u5165\u3055\u308c\u308b\u3068\uff0c\u81ea\u52d5\u7684\u306b\u6307\u5b9a\u3057\u305f\u30d7\u30ed\u30d1\u30c6\u30a3\u304c\u4f5c\u6210\u3055\u308c\u308b\u3068\u3044\u3046\u52d5\u4f5c\u3067\u3057\u305f\uff0e\u3053\u306e\u3088\u3046\u306a\u52d5\u4f5c\u306f\uff0c\u5909\u6570\u540d\u306e\u30bf\u30a4\u30dd\u306a\u3069\u306b\u3088\u308a\u4e88\u6e2c\u3057\u306a\u3044\u52d5\u4f5c\u3092\u8a98\u767a\u3059\u308b\u30ea\u30b9\u30af\u304c\u3042\u308b\u305f\u3081\uff0c\u5c06\u6765\u7684\u306b\u5ec3\u6b62\u3055\u308c\u307e\u3059\uff0e\u5177\u4f53\u7684\u306b\u306f\uff0c\u52d5\u7684\u30d7\u30ed\u30d1\u30c6\u30a3\u751f\u6210\u6a5f\u80fd\u306f\uff0cPHP 8.2\u3067Deprecated\uff08\u5ec3\u6b62\uff09\u3068\u3044\u3046\u8b66\u544a\u3092\u767a\u751f\u3059\u308b\u52d5\u4f5c\u3068\u306a\u308a\uff0cPHP 9.0\u4ee5\u964d\u3067\u5ec3\u6b62\uff08ErrorException\u304c\u30b9\u30ed\u30fc\u3055\u308c\u308b\uff09\u3055\u308c\u307e\u3059\uff0e<\/p>\n\n\n\n

\u3053\u306e\u5909\u66f4\u304c\u9069\u7528\u3055\u308c\u308b\u3068\uff0c\u52d5\u7684\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u5229\u7528\u3059\u308b\u65e2\u5b58\u306e\u30b3\u30fc\u30c9\u306b\u304a\u3044\u3066\u8b66\u544a\u304c\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\uff0e\u5c06\u6765\u7684\u306b\u306f\uff0c\u30b3\u30fc\u30c9\u3092\u4fee\u6b63\u3059\u308b\u3053\u3068\u304c\u671b\u307e\u3057\u3044\u3068\u8a00\u3048\u307e\u3059\u304c\uff0c\u79fb\u884c\u671f\u306b\u304a\u3051\u308b\u4e00\u6642\u7684\u306a\u56de\u907f\u7b56\u304c\u7528\u610f\u3055\u308c\u3066\u3044\u307e\u3059\u306e\u3067\uff0c\u7d39\u4ecb\u3057\u307e\u3059\uff0e<\/p>\n\n\n\n

\u307e\u305a\uff0c\u5ec3\u6b62\u3055\u308c\u308b\u6a5f\u80fd\uff08Deprecated\uff09\u306b\u95a2\u3059\u308b\u8b66\u544a\u3092\u6291\u6b62\u3059\u308b\u4e00\u822c\u7684\u306aPHP\u306e\u6a5f\u80fd\u3068\u3057\u3066\u306f\uff0cPHP\u8a2d\u5b9a\u30aa\u30d7\u30b7\u30e7\u30f3error_reporting\u3092php.ini\u7b49\u306b\u7f6e\u3044\u3066\u6307\u5b9a\u3059\u308b\u3068\u3044\u3046\u3082\u306e\u304c\u3042\u308a\u307e\u3059\uff0e\u4f8b\u3048\u3070\uff0c\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u6307\u5b9a\u3059\u308b\u3068\uff0cE_DEPRECATED\u306b\u5c5e\u3059\u308b\u8b66\u544a\u306f\u767a\u751f\u3057\u306a\u304f\u306a\u308a\u307e\u3059\uff0e<\/p>\n\n\n\n

error_reporting(E_ALL ^ E_DEPRECATED);<\/p>\n\n\n\n

\u306a\u304a\uff0c\u3053\u306e\u56de\u907f\u7b56\u306f\uff0cPHP 9.0\u4ee5\u964d\u3053\u306e\u6a5f\u80fd\u304c\u30a8\u30e9\u30fc\u6271\u3044\u306b\u306a\u3063\u305f\u969b\u306b\u306f\u9069\u7528\u3055\u308c\u305a\uff0c\u3042\u304f\u307e\u3067\u3082PHP 8.2\u306b\u304a\u3051\u308b\u66ab\u5b9a\u7684\u306a\u5bfe\u7b56\u3067\u3042\u308b\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\uff0e<\/p>\n\n\n\n

PHP 9.0\u4ee5\u964d\u3082\u5229\u7528\u3067\u304d\u308b\u5225\u306e\u56de\u907f\u7b56\u3068\u3057\u3066\uff0c\u30af\u30e9\u30b9\u306e\u5b9a\u7fa9\u306e\u524d\u306b#[AllowDynamicProperties] \u3068\u3044\u3046\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u6307\u5b9a\u3059\u308b\u3068\u3044\u3046\u624b\u6bb5\u304c\u63d0\u4f9b\u3055\u308c\u3066\u3044\u307e\u3059\uff0e\u3053\u306e\u6307\u5b9a\u3092\u8ffd\u52a0\u3059\u308b\u3053\u3068\u306b\u3088\u308a\uff0c\u6307\u5b9a\u3057\u305f\u30af\u30e9\u30b9\u304a\u3088\u3073\u305d\u306e\u6d3e\u751f\u30af\u30e9\u30b9\u3067\u52d5\u7684\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u5229\u7528\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\uff0e\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u3067\u306f\uff0c\u52d5\u7684\u30d7\u30ed\u30d1\u30c6\u30a3\u30927\u884c\u76ee\u3067\u5229\u7528\u3057\uff0c\u5909\u6570 iten \u306b\u5024\u3092\u4ee3\u5165\u3059\u308b\u969b\u306b\u81ea\u52d5\u7684\u306b\u5909\u6570iten \u304c\u751f\u6210\u3055\u308c\u307e\u3059\uff0e<\/p>\n\n\n\n

<?php \/\/ https:\/\/wiki.php.net\/rfc\/deprecate_dynamic_properties\nclass Foo {\n    public $item;\n}\n \n$moo = new Foo;\n$moo->item = \"orange\";\n$moo->iten = \"apple\";\n<\/code><\/pre>\n\n\n\n
<\/p>\n\n\n\n
\u3053\u306e\u30b3\u30fc\u30c9\u306f\uff0cPHP 8.2\u4ee5\u964d\u3067\u306f\uff0c\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u8b66\u544a\u3092\u767a\u751f\u3057\u307e\u3059\uff0e<\/p>\n\n\n\n
PHP Deprecated:  Creation of dynamic property Foo::$iten is deprecated<\/p>\n\n\n\n
\u3000\u3053\u3053\u3067\uff0c\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u5c5e\u6027 #[AllowDynamicProperties] \u3092\u30af\u30e9\u30b9\u5b9a\u7fa9\u306e\u524d\u306b\u8ffd\u52a0\u3057\u3066\u307f\u307e\u3057\u3087\u3046\uff0e<\/p>\n\n\n\n
#[AllowDynamicProperties]\nclass Foo {\n    public $item;\n}<\/code><\/pre>\n\n\n\n
\u3000\u3053\u308c\u306b\u3088\u308a\uff0c\u6307\u5b9a\u3057\u305f\u30af\u30e9\u30b9\uff08Foo\uff09\u3067\u52d5\u7684\u30d7\u30ed\u30d1\u30c6\u30a3\u304c\u5229\u7528\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\uff0c\u5148\u7a0b\u8b66\u544a\u3092\u767a\u751f\u3057\u305f\u30b3\u30fc\u30c9\u306b\u7f6e\u3044\u3066\u3082\u8b66\u544a\u306f\u767a\u751f\u3057\u306a\u304f\u306a\u308a\u307e\u3059\uff0e<\/p>\n\n\n\n
\u3000\u306a\u304a\uff0c\u610f\u56f3\u7684\u306a\u52d5\u7684\u30d7\u30ed\u30d1\u30c6\u30a3\u306e\u4ee3\u5165\u30fb\u53d6\u5f97\u306b\u5f93\u6765\u304b\u3089\u7528\u3044\u3089\u308c\u3066\u3044\u308b__get\u304a\u3088\u3073__set\u30e1\u30bd\u30c3\u30c9\u306b\u304a\u3044\u3066\u30a2\u30af\u30bb\u30b9\u3055\u308c\u308b\u30d7\u30ed\u30d1\u30c6\u30a3\u306f\u52d5\u7684\u30d7\u30ed\u30d1\u30c6\u30a3\u3068\u307f\u306a\u3055\u308c\u305a\uff0c\u5f93\u6765\u901a\u308a\u5229\u7528\u3067\u304d\u307e\u3059\uff0e\u4f8b\u3048\u3070\uff0c\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\uff0e<\/p>\n\n\n\n
<?php \/\/ https:\/\/wiki.php.net\/rfc\/deprecate_dynamic_properties\nclass Foo {\n    private array $data = [];\n    public function &__get($name) { return $this->data[$name];}\n    public function __set($name, $value) { $this->data[$name]=$value;}\n}\n \n$moo = new Foo;\n$moo->name = \"taro\";\nprint ($moo->name); \/\/ \u51fa\u529b\uff1a\u3000taro<\/code><\/pre>\n\n\n\n
9\u884c\u76ee\u3067\u672a\u5b9a\u7fa9\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u5909\u6570name\u306b\u5024\u3092\u4ee3\u5165\u3057\u3066\u3044\u307e\u3059\u304c\uff0c__set\u30e1\u30bd\u30c3\u30c9\u3092\u5ba3\u8a00\u3057\u3066\u304a\u308a\uff0c\u3053\u306e\u30e1\u30bd\u30c3\u30c9\u306b\u304a\u3044\u3066\u81ea\u52d5\u7684\u306b\u3088\u308a\u6307\u5b9a\u3057\u305f\u5024\u304c\u30d7\u30ed\u30d1\u30c6\u30a3\u914d\u5217data\u306b\u4ee3\u5165\u3055\u308c\u308b\u305f\u3081\uff0c\u8b66\u544a\u3092\u767a\u751f\u305b\u305a\uff0c\u5f93\u6765\u901a\u308a\u306e\u52d5\u4f5c\u3068\u306a\u308a\u307e\u3059\uff0e10\u884c\u76ee\u3067\u5024\u3092\u8868\u793a\u3057\u3066\u3044\u307e\u3059\u304c\uff0c\u3053\u306e\u969b\u306b\u3082\u5b9a\u7fa9\u3055\u308c\u305f__get\u30e1\u30bd\u30c3\u30c9\u304c\u81ea\u52d5\u7684\u306b\u30b3\u30fc\u30eb\u3055\u308c\uff0c\u914d\u5217data\u304b\u3089\u6307\u5b9a\u3057\u305f\u5909\u6570\u306e\u5024\u304c\u53d6\u5f97\u3055\u308c\u308b\u305f\u3081\uff0c\u8b66\u544a\u3092\u767a\u751f\u305b\u305a\uff0c\u52d5\u4f5c\u306f\u5f93\u6765\u901a\u308a\u3068\u306a\u308a\u307e\u3059\uff0e<\/p>\n\n\n\n
\u307e\u305f\uff0c\u7d44\u8fbc\u30af\u30e9\u30b9\u306estdClass\u306b\u304a\u3044\u3066\u306f\u5f93\u6765\u901a\u308a\u52d5\u7684\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u5229\u7528\u3067\u304d\u307e\u3059\uff0e\u4f8b\u3048\u3070\uff0c\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u306fPHP 8.2\u4ee5\u964d\u3067\u3082\u8b66\u544a\u3092\u767a\u751f\u305b\u305a\u52d5\u4f5c\u3057\u307e\u3059\uff0e<\/p>\n\n\n\n
<?php \/\/ https:\/\/wiki.php.net\/rfc\/deprecate_dynamic_properties\n$moo = new stdClass;\n$moo->name = \"taro\";\nprint ($moo->name); \/\/ \u51fa\u529b\uff1a\u3000taro<\/code><\/pre>\n\n\n\n
Readonly\u30af\u30e9\u30b9\uff08https:\/\/wiki.php.net\/rfc\/readonly_classes\uff09<\/h4>\n\n\n\n
\u3000PHP 8.1\u3067\u306f\uff0c\u30af\u30e9\u30b9\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u306breadonly\u5c5e\u6027\uff08\u8aad\u307f\u8fbc\u307f\u306e\u307f\u53ef\u80fd\uff09\u3092\u6307\u5b9a\u3059\u308b\u6a5f\u80fd\u304c\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u3066\u3044\u307e\u3059\uff0ePHP 8.2\u3067\u306f\uff0c\u30af\u30e9\u30b9\u5168\u4f53\u306breadonly\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\uff0ereadonly\u304c\u6307\u5b9a\u3055\u308c\u305f\u30af\u30e9\u30b9\u3067\u306f\uff0c\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u4ee5\u5916\u306e\u5834\u6240\u3067\u30d7\u30ed\u30d1\u30c6\u30a3\u306e\u5024\u3092\u5909\u66f4\u3067\u304d\u306a\u304f\u306a\u308a\u307e\u3059\uff0e\u4f8b\u3068\u3057\u3066\uff0c\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\uff0e<\/p>\n\n\n\n
<?php \/\/ https:\/\/wiki.php.net\/rfc\/readonly_classes\nreadonly class Foo {\n    public int $bar;\n    public function __construct() {\n        $this->bar = 1;\n    }\n}\n$foo = new Foo();\n$foo->bar = 2;\u3000\/\/ \u81f4\u547d\u7684\u30a8\u30e9\u30fc\u3092\u767a\u751f<\/code><\/pre>\n\n\n\n
\u3000\u30af\u30e9\u30b9Foo\u306freadonly\u5ba3\u8a00\u304c\u4ed8\u4e0e\u3055\u308c\u3066\u3044\u308b\u305f\u3081\uff0c9\u884c\u76ee\u3067\u30d7\u30ed\u30d1\u30c6\u30a3\u5909\u6570bar\u306b\u5024\u304c\u4ee3\u5165\u3055\u308c\u305f\u969b\u306b\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u81f4\u547d\u7684\u30a8\u30e9\u30fc\u3092\u767a\u751f\u3057\u307e\u3059\uff0e<\/p>\n\n\n\n
Fatal error: Uncaught Error: Cannot modify readonly property Foo::$bar<\/p>\n\n\n\n
\u3000\u6b21\u306b\uff0c\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u672a\u5b9a\u7fa9\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u5909\u6570moo\u306b\u5024\u3092\u4ee3\u5165\u3057\u3066\u52d5\u7684\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u4f5c\u6210\u3057\u3066\u307f\u307e\u3057\u3087\u3046\uff0e<\/p>\n\n\n\n
$foo->moo = 1;<\/code><\/pre>\n\n\n\n
\u901a\u5e38\u306e\u30af\u30e9\u30b9\u3067\u306f\uff0cPHP 8.2\u306b\u304a\u3044\u3066\u524d\u8ff0\u306e\u3088\u3046\u306b\u8b66\u544a\uff08Deprecated\uff09\u3092\u767a\u751f\u3057\u307e\u3059\u304c\uff0creadonly\u6307\u5b9a\u3055\u308c\u305f\u30af\u30e9\u30b9\u306e\u5834\u5408\uff0c\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u81f4\u547d\u7684\u30a8\u30e9\u30fc\u3092\u767a\u751f\u3057\u307e\u3059\uff0e<\/p>\n\n\n\n
Fatal error: Uncaught Error: Cannot create dynamic property Foo::$moo<\/p>\n\n\n\n
\u306a\u304a\uff0creadonly\u304c\u6307\u5b9a\u3055\u308c\u305f\u30af\u30e9\u30b9\u306b\u5148\u7a0b\u7d39\u4ecb\u3057\u305f#[AllowDynamicProperties]\u5c5e\u6027\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\uff0e#[AllowDynamicProperties]\u3092\u6307\u5b9a\u3057\u305f\u5834\u5408\uff0c\u81f4\u547d\u7684\u306a\u30a8\u30e9\u30fc\u3092\u767a\u751f\u3057\u307e\u3059\uff0e<\/p>\n\n\n\n
\u307e\u305f\uff0c\u30d7\u30ed\u30d1\u30c6\u30a3\u5909\u6570\u306e\u5ba3\u8a00\u306b\u304a\u3044\u3066\uff0c\u578b\u5ba3\u8a00\u3092\u7701\u7565\u3057\u305f\u308a\uff0cstatic\u5ba3\u8a00\u3092\u884c\u3063\u305f\u308a\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\uff0e\u4e0a\u8a18\u306e\u4f8b\u306e3\u884c\u76ee\u3092\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u5909\u66f4\u3059\u308b\u3068\u3044\u305a\u308c\u3082\u81f4\u547d\u7684\u30a8\u30e9\u30fc\u3092\u767a\u751f\u3057\u307e\u3059\uff0e<\/p>\n\n\n\n
[\u578b\u5ba3\u8a00\u3092\u7701\u7565]<\/p>\n\n\n\n
    public $bar;<\/code><\/pre>\n\n\n\n
[static\u5ba3\u8a00\u3092\u8ffd\u52a0]<\/p>\n\n\n\n
    public static int $bar;<\/code><\/pre>\n\n\n\n
\u307e\u305f\uff0c\u30af\u30e9\u30b9\u7d99\u627f\u306b\u304a\u3044\u3066\u3082\u6ce8\u610f\u70b9\u304c\u3042\u308a\uff0c\u7d99\u627f\u5143\u3068\u7d99\u627f\u5148\u306ereadonly\u5c5e\u6027\u306f\u4e00\u81f4\u3057\u3066\u3044\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\uff0e\u3064\u307e\u308a\uff0creadonly\u6307\u5b9a\u3055\u308c\u305f\u30af\u30e9\u30b9\u3092\u7d99\u627f\u3057\u305f\u5834\u5408\uff0c\u7d99\u627f\u5148\u306e\u30af\u30e9\u30b9\u306b\u304a\u3044\u3066\u3082readonly\u6307\u5b9a\u3092\u884c\u3046\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\uff0e\u307e\u305f\uff0c\u3053\u306e\u9006\u3068\u3057\u3066\uff0creadonly\u6307\u5b9a\u3055\u308c\u3066\u3044\u306a\u3044\u30af\u30e9\u30b9\u3092\u7d99\u627f\u3057\u305f\u969b\u306b\uff0c\u7d99\u627f\u5148\u306e\u30af\u30e9\u30b9\u306b\u304a\u3044\u3066readonly\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\uff0e<\/p>\n\n\n\n
\u3000\u4f8b\u3048\u3070\uff0c\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30b3\u30fc\u30c9\u306f\uff0c\u89aa\u30af\u30e9\u30b9\u3067\u306e\u307freadonly\u304c\u6307\u5b9a\u3055\u308c\u3066\u3044\u308b\u305f\u3081\uff0c\u81f4\u547d\u7684\u30a8\u30e9\u30fc\u3092\u767a\u751f\u3057\u307e\u3059\uff0e<\/p>\n\n\n\n
readonly class Foo {}\nclass Moo extends Foo {}<\/code><\/pre>\n\n\n\n
\u3000\u9006\u306b\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u306b\u304a\u3044\u3066\u306f\uff0c\u5b50\u30af\u30e9\u30b9\u3067\u306e\u307freadonly\u304c\u6307\u5b9a\u3055\u308c\u3066\u3044\u308b\u305f\u3081\uff0c\u540c\u69d8\u306b\u81f4\u547d\u7684\u30a8\u30e9\u30fc\u3092\u767a\u751f\u3057\u307e\u3059\uff0e<\/p>\n\n\n\n
class Foo {}\nreadonly class Moo extends Foo {}<\/code><\/pre>\n\n\n\n
\u3000\u4eca\u56de\u306f\uff0c\u6b21\u306e\u30de\u30a4\u30ca\u30fc\u30d0\u30fc\u30b8\u30e7\u30f3\u30a2\u30c3\u30d7\u306b\u3042\u305f\u308bPHP 8.2\u306e\u958b\u767a\u8a08\u753b\u3068\u4e88\u5b9a\u3055\u308c\u308b\u5909\u66f4\u70b9\u306b\u3064\u3044\u3066\u7d39\u4ecb\u3057\u307e\u3057\u305f\uff0e\u30ea\u30ea\u30fc\u30b9\u30de\u30cd\u30fc\u30b8\u30e3\u304a\u3088\u3073\u30ea\u30ea\u30fc\u30b9\u306b\u5411\u3051\u305f\u30b9\u30b1\u30b8\u30e5\u30fc\u30eb\u304c\u6c7a\u307e\u3063\u305f\u3053\u3068\u3067PHP 8.2\u306e\u958b\u767a\u306f\u672c\u683c\u5316\u3059\u308b\u3082\u306e\u3068\u601d\u308f\u308c\u307e\u3059\uff0ePHP 8\u7cfb\u306e\u6a5f\u80fd\u3092\u66f4\u306b\u9032\u5316\u3055\u305b\u305fPHP 8.2\u304c\u5e74\u672b\u306b\u5411\u3051\u3066\u4e88\u5b9a\u901a\u308a\u30ea\u30ea\u30fc\u30b9\u3055\u308c\u308b\u3053\u3068\u304c\u671f\u5f85\u3055\u308c\u307e\u3059\uff0e<\/p>\n","protected":false},"excerpt":{"rendered":"
\u6691\u3055\u3092\u611f\u3058\u308b\u65e5\u3005\u3082\u591a\u304f\u306a\u3063\u3066\u304d\u307e\u3057\u305f\uff0e\u6b21\u306e\u30de\u30a4\u30ca\u30fc\u30d0\u30fc\u30b8\u30e7\u30f3\u3067\u3042\u308bPHP 8.2\u306b\u95a2\u3057\u3066\uff0c\u30ea\u30ea\u30fc\u30b9\u30de\u30cd\u30fc\u30b8\u30e3\u304c\u6c7a\u307e\u308b\u306a\u3069\uff0c\u958b\u767a\u304c\u672c\u683c\u5316\u3057\u3066\u3044 ... Read more<\/a><\/p>\n","protected":false},"author":14,"featured_media":1280,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"content-type":"","footnotes":""},"categories":[15],"tags":[110],"series":[50],"journey":[99],"product":[],"class_list":["post-5003","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-php","tag-technical-guides","series-php-column-hiirokawa","journey-run","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-33","no-featured-image-padding"],"yoast_head":"\nPHP\u91cd\u93ae\u3000\u5ee3\u5ddd\u985e\u6c0f\u306e\u30b3\u30e9\u30e0\u7b2c\uff12\uff14\u56de\u300cPHP\u306e\u6700\u65b0\u72b6\u6cc1\uff1aPHP 8.2\u958b\u767a\u672c\u683c\u30b9\u30bf\u30fc\u30c8\u300d - KUSANAGI Tech Column<\/title>\n<meta name=\"description\" content=\"PHP 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