Notice: Undefined index: sess_level in C:\xampp\htdocs\dbstudent\lib\Menuconfig.php on line 2

Fatal error: Uncaught Error: Call to undefined function mysql_connect() in C:\xampp\htdocs\dbstudent\connect\conn.php:28 Stack trace: #0 C:\xampp\htdocs\dbstudent\main\register\register_2.php(5): conndb() #1 {main} thrown in C:\xampp\htdocs\dbstudent\connect\conn.php on line 28