Warning: mysql_connect(): [2002] No such file or directory (trying to connect via unix:///var/lib/mysql/mysql.sock) in /home/herabglw/public_html/db-xy.php on line 5

Warning: mysql_connect(): No such file or directory in /home/herabglw/public_html/db-xy.php on line 5
I cannot connect to the database because: No such file or directory