gistfile1.php

<?php
class APP_Controller_Panel extends APP_Controller_Application {

    protected $_authMethods = array('foo', 'bar', 'required');

}

class APP_Controller_Application extends PPI_Controller {

    function __construct() {
        if(isset($this->_authMethods) 
            && in_array(PPI_Helper::getDispatcher()->getMethodName(), $this->_authMethods)) {
            $this->loginCheck();
        }
    }
}