{"id":3086,"date":"2018-11-18T16:41:25","date_gmt":"2018-11-18T07:41:25","guid":{"rendered":"http:\/\/taitan916.info\/blog\/?p=3086"},"modified":"2024-02-20T18:09:00","modified_gmt":"2024-02-20T09:09:00","slug":"post-3086","status":"publish","type":"post","link":"https:\/\/taitan916.info\/blog\/archives\/3086","title":{"rendered":"PHP\u3067\u30e6\u30fc\u30b6ID\u6bce\u306b\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3092\u4f5c\u6210\u3057\u30ad\u30e3\u30c3\u30b7\u30e5\u30d5\u30a1\u30a4\u30eb\u3092\u683c\u7d0d\u3059\u308b\u65b9\u6cd5"},"content":{"rendered":"<p>PHP\u3067\u4f5c\u3063\u305f\u30d7\u30ed\u30b0\u30e9\u30e0\u5185\u306b\u3066\u30e6\u30fc\u30b6\u30fcID\u6bce\u306b\u7279\u5b9a\u306e\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3092\u4f5c\u6210\u3057\u3001\u305d\u306e\u4e2d\u306b\u30ad\u30e3\u30c3\u30b7\u30e5\u30d5\u30a1\u30a4\u30eb\u3092\u683c\u7d0d\u3057\u305f\u304b\u3063\u305f\u3002\u307e\u305f\u3001\u7279\u5b9a\u306e\u52d5\u4f5c(\u30ed\u30b0\u30a2\u30a6\u30c8\u7b49)\u3092\u884c\u3063\u305f\u969b\u306f\u5148\u307b\u3069\u4f5c\u6210\u3057\u305f\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3068\u30ad\u30e3\u30c3\u30b7\u30e5\u30d5\u30a1\u30a4\u30eb\u3092\u4e38\u3054\u3068\u524a\u9664\u3057\u305f\u304b\u3063\u305f\u3002\u4ee5\u4e0b\u306b\u5bfe\u5fdc\u65b9\u6cd5\u3092\u30e1\u30e2\u3002<\/p>\n<p>&nbsp;<\/p>\n<h2>\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3068\u30d5\u30a1\u30a4\u30eb\u306e\u4f5c\u6210\u306e\u4f5c\u6210<\/h2>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">#\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u540d\r\n$cache_dir = '.\/cache\/' . $user_id;\r\n\r\n#\u30ad\u30e3\u30c3\u30b7\u30e5\u30d5\u30a1\u30a4\u30eb\u540d\r\n$cache_file = $cache_dir . '\/' . date('YmdHis') . '.cache';\r\n\r\n#\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306e\u5b58\u5728\u78ba\u8a8d\r\nif( !file_exists($cache_dir) ){\r\n    #\u5b58\u5728\u3057\u306a\u3044\u5834\u5408\u306f\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3092\u4f5c\u6210\r\n    mkdir($cache_dir);\r\n}\r\n\r\n#\u30d5\u30a1\u30a4\u30eb\u306e\u4f5c\u6210\r\nfile_put_contents($cache_file, serialize($data), LOCK_EX);<\/pre>\n<p><span class=\"enlighter-m0\"><a href=\"https:\/\/www.php.net\/manual\/ja\/function.file-exists.php\" target=\"_blank\" rel=\"noopener\">file_exists<\/a>\u3067\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306e\u5b58\u5728\u78ba\u8a8d\u3092\u884c\u3044\u3001<a href=\"https:\/\/www.php.net\/manual\/ja\/function.mkdir.php\" target=\"_blank\" rel=\"noopener\">mkdir<\/a>\u3067\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3092\u4f5c\u6210\u3059\u308b\u3068\u3044\u3046\u5f62\u306b\u306a\u308b\u3002\u5c1a\u3001\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3084\u30d5\u30a1\u30a4\u30eb\u304c\u4f5c\u6210\u3067\u304d\u306a\u3044\u5834\u5408\u306f\u4ee5\u4e0b\u3092\u7591\u3046\u3002<\/span><\/p>\n<ul>\n<li>\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u304c\u4f5c\u6210\u3067\u304d\u306a\u3044\u2192\u89aa\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306e\u30d1\u30fc\u30df\u30c3\u30b7\u30e7\u30f3\u3092755 \/ 777\u3042\u305f\u308a\u306b\u5909\u66f4<\/li>\n<li>\u30d5\u30a1\u30a4\u30eb\u304c\u4f5c\u6210\u3067\u304d\u306a\u3044\u2192mkdir\u3067\u4f5c\u6210\u3059\u308b\u969b\u306b\u7b2c2\u5f15\u6570\u3067\u30d1\u30fc\u30df\u30c3\u30b7\u30e7\u30f3\u30920775 \/ 0777\u3042\u305f\u308a\u306b\u8a2d\u5b9a<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h2>\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306e\u524a\u9664<\/h2>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">function cacheDelete(){\r\n    $cache_dir = '.\/cache\/' . $user_id;\r\n\r\n    $list = scandir($cache_dir);\r\n    for( $i = 0; $i &lt; count($list); $i++ ){\r\n        if( $list[$i] != '.' &amp;&amp; $list[$i] != '..' ){\r\n            unlink($cache_dir . '\/' . $list[$i]);\r\n        }\r\n    }\r\n    rmdir($cache_dir);\r\n}\r\n\r\n#\u7279\u5b9a\u306e\u52d5\u4f5c\u306e\u6642\u306b\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3092\u524a\u9664\r\nif( $user_id != 123 ){\r\n    cacheDelete();\r\n}<\/pre>\n<p>\u76f4\u63a5<a href=\"https:\/\/www.php.net\/manual\/ja\/function.rmdir\" target=\"_blank\" rel=\"noopener\">rmdir<\/a>\u3067\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3092\u524a\u9664\u3057\u3088\u3046\u3068\u3057\u305f\u5834\u5408\u3001\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u5185\u306b\u30d5\u30a1\u30a4\u30eb\u304c\u3042\u308b\u3068\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3059\u308b\u3002\u306a\u306e\u3067\u5148\u306b\u30d5\u30a1\u30a4\u30eb\u3092\u5168\u3066\u524a\u9664\u3057\u3066\u304b\u3089\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3092\u524a\u9664\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u3002<\/p>\n<p>&nbsp;<\/p>\n<h2>\u30ea\u30d5\u30a1\u30ec\u30f3\u30b9<\/h2>\n<p><a href=\"http:\/\/php.net\/manual\/ja\/function.mkdir.php\" target=\"_blank\" rel=\"noopener\">http:\/\/php.net\/manual\/ja\/function.mkdir.php<\/a><br \/>\n<a href=\"http:\/\/php.net\/manual\/ja\/function.rmdir.php\" target=\"_blank\" rel=\"noopener\">http:\/\/php.net\/manual\/ja\/function.rmdir.php<\/a><br \/>\n<a href=\"http:\/\/php.net\/manual\/ja\/function.file-exists.php\" target=\"_blank\" rel=\"noopener\">http:\/\/php.net\/manual\/ja\/function.file-exists.php<\/a><br \/>\n<a href=\"http:\/\/php.net\/manual\/ja\/function.unlink.php\" target=\"_blank\" rel=\"noopener\">http:\/\/php.net\/manual\/ja\/function.unlink.php<\/a><br \/>\n<a href=\"http:\/\/php.net\/manual\/ja\/function.scandir.php\" target=\"_blank\" rel=\"noopener\">http:\/\/php.net\/manual\/ja\/function.scandir.php<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>PHP\u3067\u4f5c\u3063\u305f\u30d7\u30ed\u30b0\u30e9\u30e0\u5185\u306b\u3066\u30e6\u30fc\u30b6\u30fcID\u6bce\u306b\u7279\u5b9a\u306e\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3092\u4f5c\u6210\u3057\u3001\u305d\u306e\u4e2d ... <\/p>\n","protected":false},"author":1,"featured_media":1085,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[2],"tags":[],"class_list":["post-3086","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-php"],"acf":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/taitan916.info\/blog\/wp-json\/wp\/v2\/posts\/3086","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/taitan916.info\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/taitan916.info\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/taitan916.info\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/taitan916.info\/blog\/wp-json\/wp\/v2\/comments?post=3086"}],"version-history":[{"count":2,"href":"https:\/\/taitan916.info\/blog\/wp-json\/wp\/v2\/posts\/3086\/revisions"}],"predecessor-version":[{"id":4771,"href":"https:\/\/taitan916.info\/blog\/wp-json\/wp\/v2\/posts\/3086\/revisions\/4771"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/taitan916.info\/blog\/wp-json\/wp\/v2\/media\/1085"}],"wp:attachment":[{"href":"https:\/\/taitan916.info\/blog\/wp-json\/wp\/v2\/media?parent=3086"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/taitan916.info\/blog\/wp-json\/wp\/v2\/categories?post=3086"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/taitan916.info\/blog\/wp-json\/wp\/v2\/tags?post=3086"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}