router定义

在DI中注册router的方法：

$di->set('router', function(){

    $router = new Phalcon\Mvc\Router();

    $router->add('/:moudule/:controller/:action/:params', array(

        'module'    => 1,

        'controller'=> 2,

        'action'    => 3,

        'params'    =>4

    ));

    return $router;

});