Warning: mysql_connect() [function.mysql-connect]: Can't connect to local MySQL server through socket '/opt/lampp/var/mysql/mysql.sock' (111) in /opt/lampp/htdocs/classes/db.php on line 9

Warning: mysql_query(): supplied argument is not a valid MySQL-Link resource in /opt/lampp/htdocs/classes/db.php on line 19

Warning: mysql_error(): supplied argument is not a valid MySQL-Link resource in /opt/lampp/htdocs/classes/db.php on line 22
mysql query failed: