Question

I need to have tow type of extended controller class, one for admin, and other for the rest.

I create first one named MY_Controller, how to make the other.

Answer 1

like the first …

In the file core/Admin_controller.php

Class Admin_controller extends CI_Controller{
    ...
}

or

Class Admin_controller extends MY_Controller{
    ...
}

And then …

Class MyFirstAdmin extends Admin_controller{
    ...
}