Discz!常用函数解析.doc

Discuz!常用函数解析 /** * 产生随机码 * @param $length - 要多长 * @param $numberic - 数字还是字符串 * @return 返回字符串 */ function random($length, $numeric = 0) { PHP_VERSION 4.2.0 mt_srand((double)microtime() * 1000000); if($numeric) { $hash = sprintf(%0.$length.d, mt_rand(0, pow(10, $length) - 1)); } else { $hash = ; $chars = ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmnopqrstuvwxyz; $max = strlen($chars) - 1; for($i = 0; $i $length; $i++) { $hash .= $chars[mt_rand(0, $max)]; } } return $hash; } /** * 删除非空目录 * @param $path 目录 */ function removedir($dirname, $keepdir = FALSE) { $dirname = wipespecial($dirname); if(!is_dir($dirname)) { return FALSE; } $handle = opendir($dirname); while(($file = readdir($handle)) !== FALSE) { if($file != . $file != ..) { $dir = $dirname . DIRECTORY_SEPARATOR . $file; is_dir($dir) ? removedir($dir) : unlink($dir); } } closedir($handle); return !$keepdir ? (@rmdir($dirname) ? TRUE : FALSE) : TRUE; } function request($cachekey, $fid = 0, $type = 0, $return = 0) { global $timestamp, $_DCACHE; $datalist = ; if($fid in_array(CURSCRIPT, array(forumdisplay, viewthread))) { $specialfid = $GLOBALS[forum][fid]; $cachekey = !isset($GLOBALS[infosidestatus][f.$specialfid][$type]) ? $GLOBALS[infosidestatus][$type] : $GLOBALS[infosidestatus][f.$specialfid][$type]; $key = $cachekey; $cachekey .= _fid.$specialfid; } else { $specialfid = 0; $key = $cachekey; } $cachefile = DISCUZ_ROOT../forumdata/cache/request_.$cachekey..php; if((@!include($cachefile)) || $expiration $timestamp) { requ