Warning: include(mysql.class): failed to open stream: No such file or directory in /var/web/ktech/scada/index.php on line 12

Warning: include(): Failed opening 'mysql.class' for inclusion (include_path='.:/var/web/include/php/std:/var/web/include/php/pgstd:/var/web/include/mystd:/var/web/include/php/SC:/var/web/include/php/mail') in /var/web/ktech/scada/index.php on line 12

Fatal error: Class 'sql' not found in /var/web/ktech/scada/index.php on line 17