Using PHP's Interface as Extension Point

Hello all,

Did everyone tried to use PHP's Interface as Extension Point in CakePHP? 

My idea is to create a fully modular app. To build a menu, for example, I would be able to do something like this:

The method 'getExtensionPoint' will get all the classes that implements the given interface, at run time.

// The core of extension point

class MenuController {

  function _buildMenu() {

    $menu = array();

    $menuProviders = $this->getExtensionPoint('IMenu');

    foreach($menuProviders as $menuProvider) {

      $menu += $menuProvider->getMenu();

    }

  }

}

// Some class ( could be a Controller or a Model ) which uses this extension point

class User implements IMenu {

  function getMenu() {

    return array('Users' => '/user/list');

  }  

}

// The Interface, to bind the extended classes

public interface IMenu {

  function getMenu();

}

Sorry for write all this code here. 

Someone already did something like this? This can be done using the plugins in CakePHP ?

Thanks in advance !

Vinicius

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