[PHP-DB] connecting to database..?

[Derick Dorner]

I receive the error when trying to connect to MySQL database:

Warning: MySQL Connection Failed: Can't connect to local MySQL server through socket 
'/tmp/mysql.sock' (111) in /usr/home/cupid/www/sql.php on line 13

The code I use to connect is:
$link = mysql_connect ("localhost", "username", "password");  //with the username and 
pw filled in obviously.

Is this some type of config problem between MySQL and PHP or what? Any help is 
appreciated. 
It ia a LAMP system BTW.

Derick