Php 不允许子类调用受保护属性的方法

我正在使用MVC概念开发应用程序，希望限制View类调用模型的方法，但允许它访问模型的属性，这样它就可以在需要时获取数据。相反，我想让控制器类能够调用模型的方法，如果可能的话，限制它访问属性，因为它确实不需要这样做。 我的问题是如何设计类关系来实现这个目标，或者我可以告诉php不允许另一个类的类调用方法吗？ 当前我的类的关系如下所示： 控制器

看法

还有其他从Controller和View类继承的类，如：

class UserController extends Controller
{
  public function modifyData()
  {
    $this->_model->modifyX(1); //this works and it should be working because i need the controller to be able to call model's methods
    $someVar = $this->_model->x; //this works and it should not be working because i don't need the controller to be able to get model's properties
  }
}

及

---

那么，您认为实现这一点的最佳方法是什么呢？

忽略MVC结构是否是正确的软件设计，您可以通过只向类提供它们所需的数据来解决问题。例如，如果希望视图只能访问模型的属性，则不要将模型作为参数实例化视图，而只将数据从模型传递到视图

class View
{
  protected $_model; //has access to model so it can get model's properties when needed

  public function __construct($model)
  {
    $this->_model = $model;
  }

}

class UserController extends Controller
{
  public function modifyData()
  {
    $this->_model->modifyX(1); //this works and it should be working because i need the controller to be able to call model's methods
    $someVar = $this->_model->x; //this works and it should not be working because i don't need the controller to be able to get model's properties
  }
}

class UserView extends View
{
  public function getData()
  {
    $this->_model->modifyX(1); //this works and it should not be working because i don't need the view to be able to call model's methods
    $someVar = $this->_model->x; //this works and it should be working because i do need the view to be able to get model's properties
  }
}