( ! ) Fatal error: Out of memory (allocated 9961472) (tried to allocate 28672 bytes) in D:\xampp\htdocs\nursing_exam\lib\dml\mysqli_native_moodle_database.php on line 576
Call Stack
#	Time	Memory	Function	Location
1	0.0000	169600	{main}( )	..\backup.php:0
2	0.0000	173488	require_once( 'D:\xampp\htdocs\nursing_exam\config.php' )	..\backup.php:18
3	0.0156	296656	require_once( 'D:\xampp\htdocs\nursing_exam\lib\setup.php' )	..\config.php:26
4	0.1248	9612496	setup_DB( )	..\setup.php:608
5	0.1248	9612520	moodle_database::get_driver_instance( )	..\dmllib.php:339