Can't Connect to the DB!

Deprecated: mysql_query(): The mysql extension is deprecated and will be removed in the future: use mysqli or PDO instead in /mnt/web-data2/numex_cz/public_html/www/MySQL.inc on line 42 Warning: mysql_query(): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2) in /mnt/web-data2/numex_cz/public_html/www/MySQL.inc on line 42 Warning: mysql_query(): A link to the server could not be established in /mnt/web-data2/numex_cz/public_html/www/MySQL.inc on line 42 Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)