Моя маршрутка

<?php

class Router {
    
    public static function run($options) {
        
        $default = array (
            isset ($options['default_controller_name']) ? $options['default_controller_name'] : 'home',
            isset ($options['default_action_name']) ? $options['default_action_name'] : 'main'
        );
        
        $segments = isset ($_GET['r']) ? explode('/', $_GET['r']) : $default;
        
        $controller_name = array_shift($segments);
        if (empty ($controller_name))
            $controller_name = $set['default_controller_name'];
        
        $action_name = array_shift($segments);
        if (empty ($action_name))
            $action_name = 'main';
        
        $_GET = array ();
        $count_segments = count($segments);
        
        if ($count_segments != 0) {
            for ($i = 0; $i < $count_segments; $i++) {
                
                $key = array_key_exists($i, $segments) ? $segments[ $i ] : null;
                
                if (isset ($key)) {
                
                    $key = trim($key);
                
                    if (empty ($key))
                        $key = null;
                
                }
                
                if (isset ($key)) {
                    
                    $_GET[ $key ] = false;
                    $value = array_key_exists($i, $segments) ? $segments[ ++$i ] : null;
                    
                    if (isset ($value)) {
                    
                        $value = trim($value);
                    
                        if (empty ($value))
                            $value = null;
                    
                    }
                    
                    $_GET[ $key ] = !isset ($value) ? true : $value;
                }
            }
        }
        
        if (!file_exists('./application/controllers/' . $controller_name . '.php')) {
            self::debug();
            exit;
        }
        
        include './application/controllers/' . $controller_name . '.php';
        
        $controller = 'Controller_' . $controller_name;
        
        if (!class_exists($controller)) {
            self::debug();
            exit;
        }
        
        $controller = new $controller();
        
        $action = 'Action_' . $action_name;
        
        if (!method_exists($controller, $action)) {
            self::debug();
            exit;
        }
        
        $controller->$action();
        
    }
    
    private static function debug() {
        
    }
    
}