MySQL socket

[Diego Romoli]

Hi, I've just installed Apache, MySQL and PHP on RedHat 7.0 and I can't connect to 
MySQL through PHP. I get an error saying that it can't connect to MySQL using socket 
/var/lib/mysql/mysql.sock. When I connect to the MySQL server through the mysql client 
program, I can see that that is the socket it uses to connect.

What happens here?

Thanks in advance,

Diego