Fatal error: Uncaught Error: Class "mysqli" not found in E:\Apache Software Foundation\Apache24\htdocs\trai\lucknow\classes\class_connection.php:7 Stack trace: #0 E:\Apache Software Foundation\Apache24\htdocs\trai\lucknow\index.php(11): include_once() #1 {main} thrown in E:\Apache Software Foundation\Apache24\htdocs\trai\lucknow\classes\class_connection.php on line 7