<?php

class My_Controller extends CI_Controller{

}

class LOG_Controller extends My_Controller{

}

class NOLOG_Controller extends My_Controller{

}
?>

class My_Controller extends CI_Controller {

    // do something clever here

}

// do something even more clever here ...
require_once("application/core/tool_controller.php");

class MY_Controller extends CI_Controller
{
    public function __construct() {
        parent::__construct();

        if ( !$this->ion-auth->loggedin() ) {
            redirect('auth/login');
        }
    }
}

class Secure extends MY_Controller
{
    function __construct() {
        parent::__construct();
    }
}

class Insecure extends CI_Controller
{
    function __construct() {
        parent::__construct();
    }
}