/** * 获取数据库链接 */ protected static function getConn($type) { if ($type == 'master') { if (!isset(self::$masterBbPool) || empty(self::$masterBbPool)) { self::$masterBbPool = get_instance()->load->database($type, TRUE); return self::$masterBbPool; } else { return self::$masterBbPool; } } elseif ($type == 'slave') { if (!isset(self::$slaveDbPool) || empty(self::$slaveDbPool)) { self::$slaveDbPool = get_instance()->load->database($type, TRUE); return self::$slaveDbPool; } else { return self::$slaveDbPool; } } return NULL; }