Warning: mysql_connect() [function.mysql-connect]: [2002] No such file or directory (trying to connect via unix:///tmp/mysql.sock) in /home/www/rapacz/config.php on line 3

Warning: mysql_connect() [function.mysql-connect]: No such file or directory in /home/www/rapacz/config.php on line 3
I cannot connect to the database because: No such file or directory