Warning: mysql_connect() [function.mysql-connect]: Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2) in /vol/www/includes/php/connection.php on line 19

Fatal error: Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2) in /vol/www/includes/php/connection.php on line 19