mysql_connect连接问题，烦请各位大神帮忙看一下，不甚感激！

1.Deprecated: mysql_connect(): The mysql extension is deprecated and will be removed in the future: use mysqli or PDO instead in E:\Program Files\wampserver2.5\wamp\www\imco\MVCjiagou\7&8_Two\framework\libs\db\mysql.class.php on line 25

2.Warning: mysql_connect(): MySQL server has gone away in E:\Program Files\wampserver2.5\wamp\www\imco\MVCjiagou\7&8_Two\framework\libs\db\mysql.class.php on line 25