protected function removeConnection($db_sock) {
        swoole_event_del($db_sock);
        $this->idle_pool[$db_sock]['object']->close();
        unset($this->idle_pool[$db_sock]);
        $this->connection_num--;
    }
protected function removeConnection($db_sock) {
        swoole_event_del($db_sock);
        $this->idle_pool[$db_sock]['object']->close();
        unset($this->idle_pool[$db_sock]);
        $this->connection_num--;
    }
protected function removeConnection ( $ db_sock ) { swoole_event_del ( $ db_sock ) ; $ this -> idle_pool [ $ db_sock ] [ 'object' ] -> close ( ) ; unset ( $ this -> idle_pool [ $ db_sock ] ) ; $ this -> connection_num -- ; }
remove mysql connection
@param $db_sock
remove mysql connection