Get current controller and method in CI. Also, technique to get/manage dynamic global vars

Controller.php

<?php

class CI_Controller {

        private static $instance;
        public $data = array();

        /**
         * Constructor
         */
        public function __construct()
        {
                self::$instance =& $this;
                
                // Assign all the class objects that were instantiated by the
                // bootstrap file (CodeIgniter.php) to local class variables
                // so that CI can run as one big super object.
                foreach (is_loaded() as $var => $class)
                {
                        $this->$var =& load_class($class);
                }

                $this->load =& load_class('Loader', 'core');
                $this->load->initialize();

                //$this->doSomething(); // Preprocessing on all controllers.

                $this->data['controller'] = $this->router->fetch_class();
                $this->data['current'] = $this->router->fetch_method();

                log_message('debug', "Controller Class Initialized");
        }
}

?>