protected function getMemcache() { try { //是否已经实例化 if (!self::$_connect) { $memcache = new memcache(); self::$_connect = $memcache; } else { $memcache = self::$_connect; } if ($memcache) { $memcache->connect(self::$_config['host'], self::$_config['port']); return $memcache; } else { return false; } } catch (Exception $e) { Log::write($e->getMessage(), "ERR", 3, "memcache"); return false; } }