{"id":8868,"date":"2024-07-29T08:19:26","date_gmt":"2024-07-28T23:19:26","guid":{"rendered":"https:\/\/www.prime-strategy.co.jp\/column\/?p=8868"},"modified":"2026-02-17T01:27:15","modified_gmt":"2026-02-16T16:27:15","slug":"php%e9%87%8d%e9%8e%ae%e3%81%ae%e5%bb%a3%e5%b7%9d%e9%a1%9e%e6%b0%8f%e3%81%ae%e3%82%b3%e3%83%a9%e3%83%a0%ef%bc%88%e7%ac%ac37%e5%9b%9e%ef%bc%89php%e3%81%ae%e6%9c%80%e6%96%b0%e7%8a%b6%e6%b3%81%ef%bc%9awin","status":"publish","type":"post","link":"https:\/\/kusanagi.tokyo\/column\/archives\/column_8868","title":{"rendered":"PHP\u91cd\u93ae\u306e\u5ee3\u5ddd\u985e\u6c0f\u306e\u30b3\u30e9\u30e0\uff08\u7b2c37\u56de\uff09PHP\u306e\u6700\u65b0\u72b6\u6cc1\uff1aWindows\u74b0\u5883\u306e\u6df1\u523b\u306a\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u95a2\u9023\u306e\u66f4\u65b0\u3001PHP 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8.4\u3067\u5c0e\u5165\u3055\u308c\u308b\u4e88\u5b9a\u306e\u6a5f\u80fd\u306e\u4e00\u90e8\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">iconv\u306b\u95a2\u3059\u308b\u8106\u5f31\u6027\u3068\u5bfe\u7b56<\/h4>\n\n\n\n<p>CGI\u5f15\u6570\u30a4\u30f3\u30b8\u30a7\u30af\u30b7\u30e7\u30f3\u653b\u6483\u306b\u95a2\u3059\u308b\u6df1\u523b\u5ea6\u306e\u9ad8\u3044\u8106\u5f31\u6027CVE-2024-4577\u304c\u767a\u898b\u3055\u308c\u30012024\u5e746\u67086\u65e5\u306b\u3053\u306e\u8106\u5f31\u6027\u3092\u4fee\u6b63\u3057\u305fPHP\u306e\u5404\u30d0\u30fc\u30b8\u30e7\u30f3\u304c\u30ea\u30ea\u30fc\u30b9\u3055\u308c\u307e\u3057\u305f\u3002\u3000PHP 8.3\u7cfb\u3067PHP 8.3.8\u3001PHP 8.2\u7cfb\u3067PHP 8.2.20\u3001PHP 8.1\u7cfb\u3067PHP 8.1.29\u304c\u5bfe\u5fdc\u3059\u308b\u30d0\u30fc\u30b8\u30e7\u30f3\u3068\u3057\u3066\u30ea\u30ea\u30fc\u30b9\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u8106\u5f31\u6027\u306f\u3001Windows\u4e0a\u3067\u5229\u7528\u3055\u308c\u3066\u3044\u308b\u3059\u3079\u3066\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u306ePHP\u306b\u5f71\u97ff\u3059\u308b\u3068\u3055\u308c\u3066\u304a\u308a\u3001\u3059\u3067\u306b\u3053\u306e\u8106\u5f31\u6027\u3092\u3064\u3044\u305f\u30b5\u30a4\u30d0\u30fc\u653b\u6483\u3082\u78ba\u8a8d\u3055\u308c\u3066\u3044\u308b\u3068\u306e\u3053\u3068\u3067\u3059\u3002\u95a2\u9023\u3059\u308bPHP\u3092\u904b\u7528\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u901f\u3084\u304b\u306b\u4fee\u6b63\u7248\u306b\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3059\u308b\u3053\u3068\u3092\u304a\u52e7\u3081\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u8106\u5f31\u6027\u306f\u3001\u904e\u53bb\u306b\u4fee\u6b63\u3055\u308c\u305fCGI\u5f15\u6570\u30a4\u30f3\u30b8\u30a7\u30af\u30b7\u30e7\u30f3CVE-2022-1823\u306b\u5bfe\u3059\u308b\u4fee\u6b63\u3092\u56de\u907f\u3059\u308b\u3082\u306e\u3067\u3001Unicode\u6587\u5b57\u306e\u30bd\u30d5\u30c8\u30cf\u30a4\u30d5\u30f3\uff080xAD\uff09\u304cPHP\u5074\u3067\u5b9f\u969b\u306e\u30cf\u30a4\u30d5\u30f3\u3068\u3057\u3066\u5909\u63db\u3055\u308c\u3066\u89e3\u91c8\u3055\u308c\u308b\u3053\u3068\u3092\u5229\u7528\u3057\u3066\u3001\u30cf\u30a4\u30d5\u30f3\u306b\u5bfe\u3059\u308b\u30b5\u30cb\u30bf\u30a4\u30ba\u51e6\u7406\u3092\u56de\u907f\u3057\u3001PHP\u306eCGI\u306b\u60aa\u610f\u306e\u3042\u308b\u5f15\u6570\u3092\u6307\u5b9a\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u8106\u5f31\u6027\u306f\u3001\u4ee5\u4e0b\u306e\u74b0\u5883\u304c\u5f71\u97ff\u3092\u53d7\u3051\u308b\u3053\u3068\u304c\u78ba\u8a8d\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Windows\u7248\u3067CGI\u30e2\u30fc\u30c9\u306ePHP\u3092\u5229\u7528\u3057\u3066\u3044\u308b\u3002<\/li>\n\n\n\n<li>\u4e2d\u56fd\u8a9e\u307e\u305f\u306f\u65e5\u672c\u8a9e\u306e\u30ed\u30b1\u30fc\u30eb\u3092\u5229\u7528\u3057\u3066\u3044\u308b\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u3000\u305f\u3060\u3057\u3001\u3053\u308c\u4ee5\u5916\u306e\u30ed\u30b1\u30fc\u30eb\u306b\u3064\u3044\u3066\u3082\u6ce8\u610f\u304c\u5fc5\u8981\u3068\u3055\u308c\u3066\u304a\u308a\u3001Windows CGI\u30e2\u30fc\u30c9\u3092\u5229\u7528\u3059\u308bPHP\u306b\u3064\u3044\u3066\u306f\u3001\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u304c\u63a8\u5968\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u914d\u5217\u3067\u691c\u7d22\u51e6\u7406\u3092\u884c\u3046\u95a2\u6570\u306e\u6574\u5099<\/h4>\n\n\n\n<p>\u3000PHP 8.4\u3067\u306f\u3001array_find() \u306a\u3069\u306e\u6307\u5b9a\u3057\u305f\u914d\u5217\u306e\u4e2d\u3067\u7279\u5b9a\u306e\u6761\u4ef6\u3092\u6e80\u305f\u3059\u8981\u7d20\u3092\u691c\u7d22\u3059\u308b\u95a2\u6570\u304c\u8ffd\u52a0\u3055\u308c\u307e\u3059\u3002PHP\u3067\u306f\u3001\u3059\u3067\u306b array_search() \u95a2\u6570\u3092\u306f\u3058\u3081\u3001\u985e\u4f3c\u306e\u95a2\u6570\u304c\u5b58\u5728\u3057\u307e\u3059\u304c\u3001\u30af\u30ed\u30fc\u30b8\u30e3\uff08\u7121\u540d\u95a2\u6570\uff09\u3092\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\u3068\u3057\u3066\u6307\u5b9a\u3059\u308b\u3053\u3068\u306b\u3088\u308a\u3001\u3088\u308a\u67d4\u8edf\u304b\u3064\u7c21\u5358\u306b\u691c\u7d22\u3092\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u8ffd\u52a0\u3055\u308c\u308b\u306e\u306f\u3001array_find()\u3001array_find_key()\u3001array_any()\u3001array_all() \u306e4\u7a2e\u985e\u306e\u95a2\u6570\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u9806\u756a\u306b\u4f8b\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002\u307e\u305a\u3001array_find()\u95a2\u6570\u306b\u3088\u308a\u3001\u9023\u60f3\u914d\u5217\u306e\u8981\u7d20\u3092\u691c\u7d22\u3059\u308b\u7c21\u5358\u306a\u4f8b\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;?php\n$v = array_find($array, function (string $v) { return strlen($v) > 3;});\nvar_dump($v); \/\/ string(4) \"taro\"<\/code><\/pre>\n\n\n\n<p>\u3000\u3053\u306e\u4f8b\u3067\u306f\u3001\u30af\u30ed\u30fc\u30b8\u30e3\u306b\u3088\u308a\u3001\u6587\u5b57\u5217\u9577\u304c3\u3092\u8d85\u3048\u308b\u8981\u7d20\u3092\u691c\u7d22\u3057\u3066\u3044\u307e\u3059\u3002array_find()\u95a2\u6570\u306f\u3001\u8907\u6570\u306e\u8981\u7d20\u304c\u4e00\u81f4\u3059\u308b\u5834\u5408\u3067\u3082\u3001\u4e00\u81f4\u3057\u305f\u6700\u521d\u306e\u8981\u7d20\uff08\u2019taro\u2019\uff09\u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u6b21\u306b\u3001\u985e\u4f3c\u306earray_find_key() \u95a2\u6570\u3092\u4f7f\u7528\u3059\u308b\u30b3\u30fc\u30c9\u3092\u8ffd\u52a0\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>$v = array_find_key($array, function (string $v) {\n\u00a0 \u00a0 return strlen($v) > 3;});\nvar_dump($v); \/\/ string(1) \"a\"<\/code><\/pre>\n\n\n\n<p>\u3000\u3053\u306e\u95a2\u6570\u306e\u5834\u5408\u3001\u30af\u30ed\u30fc\u30b8\u30e3\u306b\u306f\u540c\u3058\u3082\u306e\u3092\u6307\u5b9a\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u4e00\u81f4\u3059\u308b\u8981\u7d20\u306e\u30ad\u30fc\uff08\u2019a\u2019\uff09\u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u6700\u5f8c\u306b\u3001array_any()\u95a2\u6570\u304a\u3088\u3073array_all()\u95a2\u6570\u306e\u4f8b\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>$b = array_any($array, function (string $v) {\n\u00a0 \u00a0 return strlen($v) > 3;});\nvar_dump($b); \/\/ bool(true)\n$b = array_all($array, function (string $v) {\n\u00a0 \u00a0 return strlen($v) > 3;});\nvar_dump($b); \/\/ bool(false)<\/code><\/pre>\n\n\n\n<p>\u3000array_any()\u95a2\u6570\u306f\u3001\u6307\u5b9a\u3057\u305f\u914d\u5217\u306e\u3069\u308c\u304b\u304c\u30af\u30ed\u30fc\u30b8\u30e3\u3067\u6307\u5b9a\u3057\u305f\u6761\u4ef6\u3092\u6e80\u305f\u3059\u5834\u5408\u306btrue\u3001\u305d\u308c\u4ee5\u5916\u306e\u5834\u5408\u306b false \u3092\u8fd4\u3057\u307e\u3059\u3002\u4e00\u65b9\u3001array_all() \u95a2\u6570\u306f\u3001\u6307\u5b9a\u3057\u305f\u914d\u5217\u306e\u5168\u3066\u306e\u8981\u7d20\u304c\u6761\u4ef6\u3092\u6e80\u305f\u3059\u5834\u5408\u306btrue\u3001\u305d\u308c\u4ee5\u5916\u306e\u5834\u5408\u306b false \u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u3053\u306e\u4f8b\u306e\u5834\u5408\u3001\u6587\u5b57\u5217\u306e\u9577\u3055\u304c3\u3092\u8d85\u3048\u308b\u914d\u5217\u306f\u30014\u3064\u306e\u8981\u7d20\u306e\u3046\u3061\u30672\u3064\u3042\u308a\u307e\u3059\u306e\u3067\u3001array_any() \u95a2\u6570\u306f true\u3001array_all() \u95a2\u6570\u306f false \u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u30af\u30ed\u30fc\u30b8\u30e3\u306e\u4ee3\u308f\u308a\u306b\u3001PHP 7.4\u3067\u8ffd\u52a0\u3055\u308c\u305f\u30a2\u30ed\u30fc\u95a2\u6570\u3092\u6307\u5b9a\u3057\u3066\u3001\u3088\u308a\u7c21\u6f54\u306b\u8a18\u8ff0\u3059\u308b\u3053\u3068\u3082\u53ef\u80fd\u3067\u3059\u3002\u4ee5\u4e0b\u306e\u4f8b\u3067\u306f\u3001\u9023\u60f3\u914d\u5217\u306e\u4ee3\u308f\u308a\u306b\u901a\u5e38\u306e\u914d\u5217\u3001\u30af\u30ed\u30fc\u30b8\u30e3\u306b\u30a2\u30ed\u30fc\u95a2\u6570\u3092\u6307\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>$arr = &#91;'taro','jun','hanako', 'jun'];\n$v = array_find($arr, fn($v) => strlen($v)>3);\nvar_dump($v); \/\/ string(4) \"taro\"<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\">round() \u95a2\u6570\u306e\u4e38\u3081\u30e2\u30fc\u30c9\u8ffd\u52a0<\/h4>\n\n\n\n<p>\u3000PHP 8.4\u3067\u306f\u3001\u4e38\u3081\u51e6\u7406\u3092\u884c\u3046 round() \u95a2\u6570\u306b\u30aa\u30d7\u30b7\u30e7\u30f3\u304c\u8ffd\u52a0\u3055\u308c\u3001\u4e38\u3081\u51e6\u7406\u306e\u30e2\u30fc\u30c9\u3092\u6307\u5b9a\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002\u65b0\u305f\u306b\u5b9a\u7fa9\u3055\u308c\u305f\u4ee5\u4e0b\u306e\uff14\u7a2e\u985e\u306ePHP\u5b9a\u6570\u3092\u7b2c3\u5f15\u6570\u306b\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u4e38\u3081\u51e6\u7406\u306e\u6307\u5b9a\u304c\u53ef\u80fd\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>PHP_ROUND_CEILING&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; \u7b2c\uff11\u5f15\u6570\u3088\u308a\u3082\u5927\u304d\u3044\u6700\u3082\u8fd1\u3044\u6574\u6570\u306b\u4e38\u3081\u308b<\/p>\n\n\n\n<p>PHP_ROUND_FLOOR&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; \u7b2c\uff11\u5f15\u6570\u3088\u308a\u3082\u5c0f\u3055\u3044\u6700\u3082\u8fd1\u3044\u6574\u6570\u306b\u4e38\u3081\u308b<\/p>\n\n\n\n<p>PHP_ROUND_AWAY_FROM_ZERO&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; \u7b2c\uff11\u5f15\u6570\u3092\u30bc\u30ed\u304b\u3089\u96e2\u308c\u308b\u65b9\u5411\u306b\u4e38\u3081\u308b<\/p>\n\n\n\n<p>PHP_ROUND_TOWARD_ZERO&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; \u7b2c\uff11\u5f15\u6570\u3092\u30bc\u30ed\u65b9\u5411\u306b\u4e38\u3081\u308b<\/p>\n\n\n\n<p>\u3000\u65e9\u901f\u4f8b\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002\u7b2c2\u5f15\u6570\u306b\u6709\u52b9\u6841\u65700\u3092\u6307\u5b9a\u3057\u3066\u30014\u7a2e\u985e\u306e\u4e38\u3081\u51e6\u7406\u30e2\u30fc\u30c9\u3067\u5b9f\u884c\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;?php\n$number = -1.53;\nvar_dump(round($number, 0, PHP_ROUND_CEILING)); \/\/ float(-1)\nvar_dump(round($number, 0, PHP_ROUND_FLOOR)); \/\/ float(-2)\nvar_dump(round($number, 0, PHP_ROUND_AWAY_FROM_ZERO)); \/\/ float(-2)\nvar_dump(round($number, 0, PHP_ROUND_TOWARD_ZERO)); \/\/ float(-1)<\/code><\/pre>\n\n\n\n<p>\u5165\u529b\u306e\u8ca0\u306e\u6570\u5024-1.53\u306b\u5bfe\u3057\u3066\u3001\u7d50\u679c\u306f\u305d\u308c\u305e\u308c -1\u3001-2\u3001-2\u3001-1 \u3068\u306a\u308a\u307e\u3059\u3002\u6709\u52b9\u6841\u6570\u30920\u3068\u3057\u305f\u5834\u5408\u3001PHP_ROUND_CEILING\u3001PHP_ROUND_FLOOR\u306e\u7d50\u679c\u306f\u3001\u305d\u308c\u305e\u308c\u3001ceil()\u3001floor()\u95a2\u6570\u306e\u7d50\u679c\u3068\u540c\u3058\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u6b21\u306b\u3001\u6709\u52b9\u6841\u6570\u30921\u306b\u3057\u3066\u307f\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>var_dump(round($number, 1, PHP_ROUND_CEILING)); \/\/ float(-1.5)\nvar_dump(round($number, 1, PHP_ROUND_FLOOR)); \/\/ float(-1.6)\nvar_dump(round($number, 1, PHP_ROUND_AWAY_FROM_ZERO)); \/\/ float(-1.6)\nvar_dump(round($number, 1, PHP_ROUND_TOWARD_ZERO)); \/\/ float(-1.5)<\/code><\/pre>\n\n\n\n<p>\u3000\u7d50\u679c\u306f\u3001\u9806\u306b -1.5\u3001-1.6\u3001-1.6\u3001-1.5 \u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u6700\u5f8c\u306b\u6b63\u306e\u65701.53\u3092\u6307\u5b9a\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>$number = 1.53;\nvar_dump(round($number, 1, PHP_ROUND_CEILING)); \/\/ float(1.6)\nvar_dump(round($number, 1, PHP_ROUND_FLOOR)); \/\/ float(1.5)\nvar_dump(round($number, 1, PHP_ROUND_AWAY_FROM_ZERO)); \/\/ float(1.6)\nvar_dump(round($number, 1, PHP_ROUND_TOWARD_ZERO)); \/\/ float(1.5)<\/code><\/pre>\n\n\n\n<p>\u3000\u7d50\u679c\u306f\u3001\u9806\u306b 1.6\u30011.5\u30011.6\u30011.5 \u3068\u306a\u308a\u307e\u3059\u3002\u5165\u529b\u306e\u6570\u306e\u6b63\u8ca0\u304c\u5909\u308f\u308b\u3068\u30014\u7a2e\u985e\u306e\u4e38\u3081\u30e2\u30fc\u30c9\u306e\u3046\u3061\u3001\u5024\u306e\u5927\u5c0f\u3092\u8003\u616e\u3059\u308bPHP_ROUND_CEILING\u3001PHP_ROUND_FLOOR\u3067\u306f\u3001\u7b26\u53f7\u3060\u3051\u3067\u306a\u304f\u3001\u7d76\u5bfe\u5024\u3082\u5909\u308f\u308a\u307e\u3059\u3002\u4e00\u65b9\u3001\u30bc\u30ed\u3078\u306e\u65b9\u5411\u3092\u8003\u616e\u3059\u308bPHP_ROUND_AWAY_FROM_ZERO\u3001PHP_ROUND_TOWARD_ZERO\u3067\u306f\u3001\u7b26\u53f7\u306f\u5909\u308f\u3063\u3066\u3082\u7d76\u5bfe\u5024\u306f\u5909\u308f\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u6697\u9ed9\u306enullable\u5f15\u6570\u578b\u304c\u5ec3\u6b62\u5bfe\u8c61\u306b<\/h4>\n\n\n\n<p>\u3000PHP \u3067\u306f\u3001null\u306b\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u5f15\u6570\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u660e\u793a\u7684\u306b\u6307\u5b9a\u3059\u308b\u65b9\u6cd5\u3068\u3057\u3066\u3001?T\u69cb\u6587\u304cPHP 7.1\u3067\u5c0e\u5165\u3055\u308c\u3001PHP 8.0 \u3067 Union\u578b\u3068\u3057\u3066 T|null \u69cb\u6587\u304c\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3057\u304b\u3057\u3001\u305d\u308c\u4ee5\u524d\u306b\u4f5c\u6210\u3055\u308c\u305f\u30b3\u30fc\u30c9\u3068\u306e\u5f8c\u65b9\u4e92\u63db\u6027\u306e\u305f\u3081\u3001\u5f93\u6765\u304b\u3089\u5b58\u5728\u3059\u308b\u300c\u6697\u9ed9\u306enullable\u6307\u5b9a\u300d\u3082\u5229\u7528\u53ef\u80fd\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u95a2\u6570\u5ba3\u8a00\u6642\u306b null \u3092\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u3068\u3057\u3066\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001array \uff08\u914d\u5217\uff09\u3084 callable \u578b\u306e\u3088\u3046\u306a\u672c\u6765\u306fnull\u3092\u6307\u5b9a\u3067\u304d\u306a\u3044\u5f15\u6570\u3067\u3042\u3063\u3066\u3082\u3001\u6697\u9ed9\u306e\u3046\u3061\u306bnull\u3092\u6307\u5b9a\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b\u3068\u3044\u3046\u3082\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u3057\u304b\u3057\u3001\u6697\u9ed9\u306e\u3046\u3061\u306bnullable\u3068\u3067\u304d\u308b\u8a18\u6cd5\u306f\u3001\u6df7\u4e71\u3092\u62db\u304f\u53ef\u80fd\u6027\u304c\u3042\u308b\u305f\u3081\u3001\u5ec3\u6b62\u5bfe\u8c61\u3068\u3059\u308b\u63d0\u6848\u304c\u884c\u308f\u308c\u3001\u6295\u7968\u306b\u3088\u308a\u63a1\u7528\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p>\u3000\u5f93\u6765\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u5b9a\u7fa9\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>function foo(array $var = null) {}<\/code><\/pre>\n\n\n\n<p>&nbsp;\u3000PHP 8.4 \u3067\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u5ec3\u6b62\u5bfe\u8c61\u306b\u95a2\u3059\u308b\u8b66\u544a\u304c\u767a\u751f\u3059\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Deprecated: foo(): Implicitly marking parameter $var as nullable is deprecated, the explicit nullable type must be used instead in \u2026<\/code><\/pre>\n\n\n\n<p>&nbsp; \u4e0a\u8a18\u306e\u30b3\u30fc\u30c9\u306f\u3001?T\u69cb\u6587\u306b\u3088\u308a\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u5909\u66f4\u3059\u308b\u3053\u3068\u304c\u63a8\u5968\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>function foo(?array $var) {}<\/code><\/pre>\n\n\n\n<p>\u307e\u305f\u306f\u3001Union\u578b\u306b\u3088\u308a\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u8a18\u8f09\u3059\u308b\u3053\u3068\u3082\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>function foo(array|null $var) {}<\/code><\/pre>\n\n\n\n<p>\u3000\u306a\u304a\u3001\u3053\u306e\u6697\u9ed9\u306enullable\u6a5f\u80fd\u306f\u3001PHP 9.0\u3067\u5ec3\u6b62\u3055\u308c\u308b\u4e88\u5b9a\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u4eca\u56de\u306f\u3001PHP\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u95a2\u9023\u306e\u8a71\u984c\u306b\u3064\u3044\u3066\u7d39\u4ecb\u3057\u305f\u5f8c\u3001\u524d\u56de\u306b\u7d9a\u3044\u306611\u6708\u306e\u30ea\u30ea\u30fc\u30b9\u306b\u5411\u3051\u3066\u672c\u683c\u7684\u306b\u958b\u767a\u304c\u958b\u59cb\u3055\u308c\u305fPHP 8.4\u306b\u304a\u3051\u308b\u5909\u66f4\u70b9\u306e\u4e00\u90e8\u3092\u7d39\u4ecb\u3057\u307e\u3057\u305f\u3002\u6b21\u56de\u4ee5\u964d\u3082PHP 8.4\u306e\u305d\u306e\u4ed6\u306e\u5909\u66f4\u70b9\u306b\u3064\u3044\u3066\u7d39\u4ecb\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u30006\u6708\u306b\u5165\u308a\u3001\u96e8\u306e\u591a\u3044\u6885\u96e8\u306e\u5b63\u7bc0\u3068\u306a\u308a\u307e\u3057\u305f\u3002\u3000\u4eca\u6708\u306f\u3001\u6df1\u523b\u5ea6\u306e\u9ad8\u3044\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u95a2\u9023\u306e\u4fee\u6b63\u304c\u884c\u308f\u308c\u305fPHP\u306e\u30ea\u30ea\u30fc\u30b9\u304c\u884c\u308f\u308c\u3066\u3044\u307e\u3059\u3002\u307e\u305f\u3001 ... <a title=\"PHP\u91cd\u93ae\u306e\u5ee3\u5ddd\u985e\u6c0f\u306e\u30b3\u30e9\u30e0\uff08\u7b2c37\u56de\uff09PHP\u306e\u6700\u65b0\u72b6\u6cc1\uff1aWindows\u74b0\u5883\u306e\u6df1\u523b\u306a\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u95a2\u9023\u306e\u66f4\u65b0\u3001PHP 8.4\u306e\u958b\u767a\u304c\u9032\u884c\" class=\"read-more\" href=\"https:\/\/kusanagi.tokyo\/column\/archives\/column_8868\" aria-label=\"PHP\u91cd\u93ae\u306e\u5ee3\u5ddd\u985e\u6c0f\u306e\u30b3\u30e9\u30e0\uff08\u7b2c37\u56de\uff09PHP\u306e\u6700\u65b0\u72b6\u6cc1\uff1aWindows\u74b0\u5883\u306e\u6df1\u523b\u306a\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u95a2\u9023\u306e\u66f4\u65b0\u3001PHP 8.4\u306e\u958b\u767a\u304c\u9032\u884c \u306b\u3064\u3044\u3066\u3055\u3089\u306b\u8aad\u3080\">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-8868","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":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>PHP\u91cd\u93ae\u306e\u5ee3\u5ddd\u985e\u6c0f\u306e\u30b3\u30e9\u30e0\uff08\u7b2c37\u56de\uff09PHP\u306e\u6700\u65b0\u72b6\u6cc1\uff1aWindows\u74b0\u5883\u306e\u6df1\u523b\u306a\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u95a2\u9023\u306e\u66f4\u65b0\u3001PHP 8.4\u306e\u958b\u767a\u304c\u9032\u884c - KUSANAGI Tech Column<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/kusanagi.tokyo\/column\/archives\/column_8868\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"PHP\u91cd\u93ae\u306e\u5ee3\u5ddd\u985e\u6c0f\u306e\u30b3\u30e9\u30e0\uff08\u7b2c37\u56de\uff09PHP\u306e\u6700\u65b0\u72b6\u6cc1\uff1aWindows\u74b0\u5883\u306e\u6df1\u523b\u306a\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u95a2\u9023\u306e\u66f4\u65b0\u3001PHP 8.4\u306e\u958b\u767a\u304c\u9032\u884c - KUSANAGI Tech Column\" \/>\n<meta property=\"og:description\" content=\"\u30006\u6708\u306b\u5165\u308a\u3001\u96e8\u306e\u591a\u3044\u6885\u96e8\u306e\u5b63\u7bc0\u3068\u306a\u308a\u307e\u3057\u305f\u3002\u3000\u4eca\u6708\u306f\u3001\u6df1\u523b\u5ea6\u306e\u9ad8\u3044\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u95a2\u9023\u306e\u4fee\u6b63\u304c\u884c\u308f\u308c\u305fPHP\u306e\u30ea\u30ea\u30fc\u30b9\u304c\u884c\u308f\u308c\u3066\u3044\u307e\u3059\u3002\u307e\u305f\u3001 ... 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