[求助]PHP连接MYSQL的问题

我安装的是Redhat 9

apache mysql php 都已经配置好了!

可是我在php创建连接:
<?php

$conn = mysql_connect("localhost", "root", "benben");


?>

错误信息:
Warning: mysql_connect(): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (13) in /usr/local/apache2/htdocs/index.php on line 3

google找了些资料,说是linux的Bug,怎么也找不到补丁下载!
请问这到底是什么问题〉??