PHP 연결 mysql 시간 초과에 대한 솔루션

function reconnect(){
    if (!mysql_ping ($this->db)) {
        //here is the major trick, you have to close the connection (even though its not currently working) for it to recreate properly.
        mysql_close($this->db);
        $this->connect();
    }
}

其中的mysql_ping()用来判断连接是否已经被断开了，若是断开了，关闭当前的链接，重新创建新的连接。
这样，只要发现连接被断开了，即可重新连接了。