{"id":2805,"date":"2020-08-17T22:03:15","date_gmt":"2020-08-17T13:03:15","guid":{"rendered":"https:\/\/www.programming-se.com\/?p=2805"},"modified":"2021-02-18T21:25:28","modified_gmt":"2021-02-18T12:25:28","slug":"php-%e9%96%a2%e6%95%b0%e3%81%ae%e5%9f%ba%e6%9c%ac%e3%80%8c%e7%b5%84%e3%81%bf%e8%be%bc%e3%81%bf%ef%bc%88%e3%83%93%e3%83%ab%e3%83%88%e3%82%a4%e3%83%b3%ef%bc%89%e9%96%a2%e6%95%b0%e3%80%8d","status":"publish","type":"post","link":"https:\/\/www.programming-se.com\/?p=2805","title":{"rendered":"PHP \u95a2\u6570\u306e\u57fa\u672c\u300c\u7d44\u307f\u8fbc\u307f\uff08\u30d3\u30eb\u30c8\u30a4\u30f3\uff09\u95a2\u6570\u300d\u301c\u672a\u7d4c\u9a13\u306e\u70ba\u306ePHP\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8b1b\u5ea7\u301c"},"content":{"rendered":"\n

\u4eca\u56de\u306f\u95a2\u6570\u306e\u7d39\u4ecb\u3092\u3057\u307e\u3059\u3002
\u95a2\u6570\u306e\u4e2d\u3067\u3082\u300c\u7d44\u307f\u8fbc\u307f\uff08\u30d3\u30eb\u30c8\u30a4\u30f3\uff09\u95a2\u6570<\/strong>\u300d\u3068\u8a00\u3063\u3066PHP\u304c\u6a19\u6e96\u3067\u6301\u3063\u3066\u3044\u308b\u95a2\u6570\u306e\u7d39\u4ecb\u3067\u3059\u3002<\/p>\n\n\n\n

\u95a2\u6570\u3068\u306f\uff1f<\/h2>\n\n\n\n

\u95a2\u6570\u3068\u306f\u5024\uff08\u5f15\u6570\uff09\u3092\u4e0e\u3048\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u3001\u6c7a\u3081\u3089\u308c\u305f\u51e6\u7406\u3092\u884c\u3044\u305d\u306e\u7d50\u679c\u3092\u8fd4\u3059\u6a5f\u80fd\u306e\u3053\u3068\u3092\u8a00\u3044\u307e\u3059\u3002
\u4e2d\u3067\u3082\u7d44\u307f\u8fbc\u307f\u95a2\u6570\u306fPHP\u304c\u6a19\u6e96\u3067\u642d\u8f09\u3057\u3066\u3044\u308b\u6a5f\u80fd\u306a\u306e\u3067\u3069\u3053\u304b\u3089\u3067\u3082\u5229\u7528\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n

\u7d44\u307f\u8fbc\u307f\u95a2\u6570\u4ee5\u5916\u306b\u306f\u300c\u30e6\u30fc\u30b6\u30fc\u5b9a\u7fa9\u95a2\u6570<\/strong>\u300d\u304c\u3042\u308a\u30d7\u30ed\u30b0\u30e9\u30de\u304c\u81ea\u7531\u306b\u95a2\u6570\u3092\u4f5c\u6210\u30fb\u5229\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n

\u95a2\u6570\u306e\u5229\u7528\u65b9\u6cd5<\/h2>\n\n\n\n

\u914d\u5217\u306e\u6570\u3092\u6570\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u308bcount\u95a2\u6570<\/strong>\u3067\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n

\u95a2\u6570\u3092\u5229\u7528\u3059\u308b\u305f\u3081\u306e\u69cb\u6587\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n

<?php\n\n\/\/ \u623b\u308a\u5024 = \u95a2\u6570\u540d( \u5f15\u6570, ..... );\n\/\/ \u4f8b \u914d\u5217\u306e\u6570\u3092\u30ab\u30a6\u30f3\u30c8\u3059\u308b count()\u95a2\u6570\u306e\u5229\u7528\n$array = array( '\u5c71\u7530', '\u4f50\u85e4', '\u7530\u4e2d' );\n\n$num = count( $array );\n\necho $num\n?><\/pre><\/div>\n\n\n\n
3<\/pre><\/div>\n\n\n\n
\u5f15\u6570\u304c\u8907\u6570\u3042\u308b\u5834\u5408\u306f\u300c,\u300d\u30ab\u30f3\u30de\u533a\u5207\u308a\u3067\u8a18\u8ff0\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
\u7d44\u307f\u8fbc\u307f\uff08\u30d3\u30eb\u30c8\u30a4\u30f3\uff09\u95a2\u6570<\/h2>\n\n\n\n
\u3067\u306f\u7d44\u307f\u8fbc\u307f\uff08\u30d3\u30eb\u30c8\u30a4\u30f3\uff09\u95a2\u6570\u3092\u3044\u304f\u3064\u304b\u7d39\u4ecb\u3057\u307e\u3059\u3002
\u3053\u3053\u3067\u7d39\u4ecb\u3059\u308b\u4ee5\u5916\u306b\u3082\u69d8\u3005\u306a\u7d44\u307f\u8fbc\u307f\uff08\u30d3\u30eb\u30c8\u30a4\u30f3\uff09\u95a2\u6570\u304c\u3042\u308a\u307e\u3059\u3002
\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3092\u3059\u308b\u4e0a\u3067\u95a2\u6570\u3092\u77e5\u3063\u3066\u3044\u308b\u304b\u3001\u77e5\u3089\u306a\u3044\u304b\u3067\u304b\u306a\u308a\u5dee\u304c\u3064\u304d\u307e\u3059\u306e\u3067\u3001\u6700\u521d\u306f\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3057\u305f\u3044\u5185\u5bb9\u30fb\u6a5f\u80fd\u306e\u95a2\u6570\u304c\u3042\u308b\u304b\u30ea\u30d5\u30a1\u30ec\u30f3\u30b9<\/strong><\/a>\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u3092\u304a\u52e7\u3081\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
print\u95a2\u6570<\/h3>\n\n\n\n
print\u95a2\u6570\u306f\u5f15\u6570\u306b\u4e0e\u3048\u3089\u308c\u305f\u6587\u5b57\u5217\u3092\u51fa\u529b\u3059\u308b\u305f\u3081\u306e\u95a2\u6570\u3067\u3059\u3002<\/p>\n\n\n\n
<?php\n\n$str = '\u30cf\u30ed\u30fc\u30ef\u30fc\u30eb\u30c9';\nprint( $str );\n\n\/\/ \u7d50\u679c\n\u30cf\u30ed\u30fc\u30ef\u30fc\u30eb\u30c9<\/pre><\/div>\n\n\n\n
mb_strlen\u95a2\u6570<\/h3>\n\n\n\n
mb_strlen\u95a2\u6570\u306f\u6587\u5b57\u5217\u306e\u9577\u3055\u3092\u53d6\u5f97\u3059\u308b\u305f\u3081\u306e\u95a2\u6570\u3067\u3059\u3002<\/p>\n\n\n\n
<?php\n\n$str = '\u30a2\u30a4\u30a6\u30a8\u30aa';\n\n$num = mb_strlen( $str );\n\necho $num;\n?>\n\/\/ \u7d50\u679c\n5\n<\/pre><\/div>\n\n\n\n
<?php\n\n$str = '\u30a2\u30a4\u30a6\u30a8\u30aa';\n$enc = 'UTF-8';\n\n$num = mb_strlen( $str, $enc );\n\necho $num;\n?>\n\/\/ \u7d50\u679c\n5\n<\/pre><\/div>\n\n\n\n
date\u95a2\u6570<\/h3>\n\n\n\n
\u73fe\u5728\u306e\u5e74\u6708\u65e5\u6642\u5206\u79d2\u3092\u53d6\u5f97\u3067\u304d\u308b\u95a2\u6570\u3067\u3059\u3002<\/p>\n\n\n\n
<?php\n\necho date('Y-m-d h:i:s');\n\n\/\/ \u7d50\u679c\n2020-08-17 22:00:00\n\n?><\/pre><\/div>\n\n\n\n
explode\u95a2\u6570<\/h3>\n\n\n\n
explode\u95a2\u6570\u306f\u3001\u6587\u5b57\u5217\u3092\u4e0e\u3048\u3089\u308c\u305f\u6587\u5b57\u5217\u3067\u5206\u5272\u3057\u914d\u5217\u3067\u8fd4\u3059\u95a2\u6570\u3067\u3059\u3002
explode( ‘\u5206\u5272\u3059\u308b\u6587\u5b57’ , ‘\u5143\u306e\u6587\u5b57\u5217’ );<\/p>\n\n\n\n
<?php\n\n$tel = '080-1111-2222';\n$tel_arr = explode( '-', $tel );\n\nprint_r( $tel_arr );\n\n\/\/ \u7d50\u679c\nArray ( [0] => 080 [1] => 1111 [2] => 2222 )<\/pre><\/div>\n\n\n\n
implode\u95a2\u6570<\/h3>\n\n\n\n
implode\u95a2\u6570\u306f\u3001explode\u95a2\u6570\u306e\u9006\u306e\u30a4\u30e1\u30fc\u30b8\u3067\u3001\u914d\u5217\u3092\u4e0e\u3048\u3089\u308c\u305f\u6587\u5b57\u5217\u3067\u7d50\u5408\u3057\u6587\u5b57\u5217\u3067\u8fd4\u3059\u95a2\u6570\u3067\u3059\u3002
implode( ‘\u7d50\u5408\u3059\u308b\u6587\u5b57’ , ‘\u914d\u5217’ );<\/p>\n\n\n\n
<?php\n\n$tel[] = '080';\n$tel[] = '1111';\n$tel[] = '2222';\n$tel_str = implode( '-', $tel );\n\necho $tel_str;\n\n\/\/ \u7d50\u679c\n080-1111-2222<\/pre><\/div>\n\n\n\n
file_get_contents\u95a2\u6570<\/h3>\n\n\n\n
file_get_contents\u95a2\u6570\u306f\u3001\u6307\u5b9a\u306eURL\u306b\u30a2\u30af\u30bb\u30b9\u3057\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u3092\u53d6\u5f97\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002
\u30af\u30ec\u30b8\u30c3\u30c8\u6c7a\u6e08\u306eAPI\u3067\u6c7a\u6e08\u304c\u5b8c\u4e86\u3057\u305f\u304b\u306a\u3069\u306e\u623b\u308a\u5024\u3092\u53d6\u5f97\u3057\u51e6\u7406\u3057\u305f\u308a\u3001\u30b9\u30af\u30ec\u30a4\u30d4\u30f3\u30b0\u306a\u3069\u306b\u5229\u7528\u53ef\u80fd\u3067\u3059
implode( ‘\u7d50\u5408\u3059\u308b\u6587\u5b57’ , ‘\u914d\u5217’ );<\/p>\n\n\n\n
<?php\n\n$url = 'https:\/\/www.programming-se.com';\n$code = file_get_contents( $url );\n\necho $code;\n\n\/\/ \u7d50\u679c\n\u203b\u6307\u5b9a\u306eURL\u306e\u30da\u30fc\u30b8\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/pre><\/div>\n\n\n\n
htmlspecialchars\u95a2\u6570<\/h3>\n\n\n\n
htmlspecialchars\u95a2\u6570\u306f\u3001HTML\u306e\u7279\u6b8a\u306a\u6587\u5b57\u5217\u300c<\u3001>\u3001”\u3001’\u3001&\u300d\u306a\u3069\u3092\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\uff08\u7121\u52b9\u5316\u3057\u5225\u306e\u6587\u5b57\u5217\u300c&lt;\u3084&gt;\u300d\u306b\u7f6e\u304d\u63db\u3048\uff09\u3057\u307e\u3059\u3002
htmlspecialchars( ‘\u6587\u5b57\u5217’ , ‘\u30d5\u30e9\u30b0’ , ‘\u30a8\u30f3\u30b3\u30fc\u30c9’ );<\/p>\n\n\n\n
<?php\n\n$script = '<script>alert(\"\u3042\u3042\u3042\");<\/script>';\n$code = htmlspecialchars( $url );\n\necho $code;\n\n\/\/ \u7d50\u679c\n<script>alert(\"\u3042\u3042\u3042\");<\/script><\/pre><\/div>\n\n\n\n
\u4e0a\u8a18\u306f\u305d\u306e\u307e\u307e\u8868\u793a\u3055\u308c\u305f\u304b\u306e\u3088\u3046\u306b\u898b\u3048\u307e\u3059\u304c\u3001htmlspecialchars\u95a2\u6570\u3092\u5229\u7528\u3057\u306a\u3044\u3068JavaScript\u304c\u52d5\u4f5c\u3057\u30a2\u30e9\u30fc\u30c8\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n
\u7f6e\u304d\u63db\u3048\u3089\u308c\u308b\u6587\u5b57<\/h4>\n\n\n\n
\u4e0b\u8a18\u306f\u3001htmlspecialchars\u95a2\u6570\u306b\u3088\u3063\u3066\u7f6e\u304d\u63db\u3048\u3089\u308c\u308b\u6587\u5b57\u5217\u306e\u4e00\u89a7\u3067\u3059\u3002
\"<\/code>\u00a0(\u30c0\u30d6\u30eb\u30af\u30a9\u30fc\u30c8)\u3001'<\/code>\u00a0(\u30b7\u30f3\u30b0\u30eb\u30af\u30a9\u30fc\u30c8)\u306e\u5909\u63db\u306b\u306f\u7b2c2\u5f15\u6570\u306b\u5b9a\u6570\u306e\u8a2d\u5b9a\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n\n\n\n
\u5909\u63db\u3055\u308c\u308b\u6587\u5b57\u5217<\/th>\u5909\u63db\u5f8c\u306e\u6587\u5b57\u5217<\/th><\/tr><\/thead>
&<\/code>\u00a0(\u30a2\u30f3\u30d1\u30b5\u30f3\u30c9)<\/td>&amp;<\/td><\/tr>
\"<\/code>\u00a0(\u30c0\u30d6\u30eb\u30af\u30a9\u30fc\u30c8)<\/td>ENT_NOQUOTES<\/code><\/strong>\u00a0\u304c\u6307\u5b9a\u3055\u308c\u3066\u3044\u306a\u3044\u5834\u5408\u3001&quot;<\/code><\/td><\/tr>
'<\/code>\u00a0(\u30b7\u30f3\u30b0\u30eb\u30af\u30a9\u30fc\u30c8)<\/td>ENT_QUOTES<\/code><\/strong>\u00a0\u304c\u6307\u5b9a\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u3001&apos;<\/code><\/td><\/tr>
<<\/code>\u00a0(\u5c0f\u306a\u308a)<\/td>&lt;<\/td><\/tr>
><\/code>\u00a0(\u5927\u306a\u308a)<\/td>&gt;<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
\u7b2c2\u5f15\u6570\u30d5\u30e9\u30b0\u7528\u306e\u5b9a\u6570<\/h4>\n\n\n\n
\"<\/code>\u00a0(\u30c0\u30d6\u30eb\u30af\u30a9\u30fc\u30c8)\u3001'<\/code>\u00a0(\u30b7\u30f3\u30b0\u30eb\u30af\u30a9\u30fc\u30c8)\u306e\u5909\u63db\u306b\u306f\u7b2c2\u5f15\u6570\u306b\u5b9a\u6570\u306e\u8a2d\u5b9a\u304c\u5fc5\u8981\u306a\u8aac\u660e\u3092\u3057\u307e\u3057\u305f\u304c\u3001\u4ee5\u4e0b\u304c\u8a2d\u5b9a\u3067\u304d\u308b\u5b9a\u6570\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
\u5b9a\u6570\u540d<\/th>\u8a2d\u5b9a\u6642\u306e\u3075\u308b\u307e\u3044<\/th><\/tr><\/thead>
ENT_COMPAT<\/code><\/strong><\/td>\u30c0\u30d6\u30eb\u30af\u30a9\u30fc\u30c8\u306f\u5909\u63db\u3057\u307e\u3059\u304c\u30b7\u30f3\u30b0\u30eb\u30af\u30a9\u30fc\u30c8\u306f\u5909\u63db\u3057\u307e\u305b\u3093\u3002<\/td><\/tr>
ENT_QUOTES<\/code><\/strong><\/td>\u30b7\u30f3\u30b0\u30eb\u30af\u30a9\u30fc\u30c8\u3068\u30c0\u30d6\u30eb\u30af\u30a9\u30fc\u30c8\u3092\u5171\u306b\u5909\u63db\u3057\u307e\u3059\u3002<\/td><\/tr>
ENT_NOQUOTES<\/code><\/strong><\/td>\u30b7\u30f3\u30b0\u30eb\u30af\u30a9\u30fc\u30c8\u3068\u30c0\u30d6\u30eb\u30af\u30a9\u30fc\u30c8\u306f\u5171\u306b\u5909\u63db\u3055\u308c\u307e\u305b\u3093\u3002<\/td><\/tr><\/tbody><\/table>
\u8a2d\u5b9a\u53ef\u80fd\u306a\u5b9a\u6570
\u203b\u4e0a\u8a18\u4ee5\u5916\u306b\u3082\u8a2d\u5b9a\u53ef\u80fd\u306a\u5b9a\u6570\u306f\u3044\u304f\u3064\u304b\u5b58\u5728\u3057\u307e\u3059\u3002<\/figcaption><\/figure>\n\n\n\n
mb_convert_encoding\u95a2\u6570<\/h3>\n\n\n\n
mb_convert_encoding\u95a2\u6570\u306f\u3001\u4e0e\u3048\u3089\u308c\u305f\u6587\u5b57\u5217\u306e\u30c6\u30ad\u30b9\u30c8\u30a8\u30f3\u30b3\u30fc\u30c9\u3092\u5909\u66f4\u3059\u308b\u95a2\u6570\u3067\u3059\u3002
\u95a2\u6570\u540d\u306e\u982d\u306b\u3042\u308b\u300cmb\u300d\u306f\u30de\u30eb\u30c1\u30d0\u30a4\u30c8\u306e\u610f\u5473\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
\u6587\u5b57\u5316\u3051\u306a\u3069\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u306f\u3001\u307e\u305a\u3053\u3053\u3092\u78ba\u304b\u3081\u308b\u3068\u826f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n
mb_convert_encoding( ‘\u6587\u5b57\u5217’ , ‘\u5909\u66f4\u5f8c\u306e\u30a8\u30f3\u30b3\u30fc\u30c9’ , ‘\u5909\u66f4\u524d\u306e\u30a8\u30f3\u30b3\u30fc\u30c9’ );<\/p>\n\n\n\n
<?php\n\/\/ \u300c\u5c71\u7530\u592a\u90ce\u300d\u306e\u6587\u5b57\u5217\u306e\u30a8\u30f3\u30b3\u30fc\u30c9\u306fShift_JIS\u3068\u3059\u308b\n$str = '\u5c71\u7530\u592a\u90ce';\n\n\/\/ Shift_JIS\u3092UTF-8\u306b\u5909\u66f4\n$str_enc = mb_convert_encoding($str, 'UTF-8', 'SJIS');\n\necho $str_enc;\n\n\/\/ \u7d50\u679c\n\u5c71\u7530\u592a\u90ce<\/pre><\/div>\n\n\n\n
\u7b2c2\u5f15\u6570\u3001\u7b2c3\u5f15\u6570\u306b\u306f\u6587\u5b57\u306e\u30a8\u30f3\u30b3\u30fc\u30c9\u3092\u5165\u529b\u3057\u307e\u3059\u304c\u3001\u7b2c3\u5f15\u6570\u306f ‘auto’ \u3082\u3057\u304f\u306f\u300c\u8a2d\u5b9a\u306a\u3057\u300d\u3067\u3082\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n
\u30c6\u30ad\u30b9\u30c8\u30a8\u30f3\u30b3\u30fc\u30c9\u306e\u7a2e\u985e<\/h4>\n\n\n\n
\u30c6\u30ad\u30b9\u30c8\u30a8\u30f3\u30b3\u30fc\u30c9\u306e\u7a2e\u985e\u306f\u591a\u6570\u3042\u308a\u307e\u3059\u3002\u4ee5\u4e0b\u4e00\u90e8\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n