'; $include_dir = $dir.DIRECTORY_SEPARATOR."libraries".DIRECTORY_SEPARATOR; $filename = $include_dir.str_replace('\\', DIRECTORY_SEPARATOR, $classname) . '.class.php'; if (!file_exists($filename)) exit("Undefined class `$classname` @ `$filename`"); require_once($filename); } if (!file_exists($dir.'/config.php')) throw new E('未找到 `config.php`，请确认配置文件是否存在。', -1, true); require "$dir/config.php";