Fatal error: Uncaught Error: Class "mysqli" not found in E:\Apache Software Foundation\Apache24\htdocs\trai\hyderabad\classes\class_connection.php:7 Stack trace: #0 E:\Apache Software Foundation\Apache24\htdocs\trai\hyderabad\index.php(13): include_once() #1 {main} thrown in E:\Apache Software Foundation\Apache24\htdocs\trai\hyderabad\classes\class_connection.php on line 7