Fatal error: Uncaught Error: Call to undefined function mysql_connect() in /opt/lampp/htdocs/dhtmlxSuite_v5.1/samples/dhtmlxForm/common/config.php:8 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/dhtmlxSuite_v5.1/samples/dhtmlxForm/common/config.php on line 8