PHP魔術方法 - __get和__set不工作在PHP MVC框架服務工廠

Question

我在index.php中創建了一個serviceFactory的實例，它只是自己獲取/存儲（私人）變量。但是，由於某種原因，__get和__set魔術方法不起作用。在索引中執行var_dump（$ serviceFactory-> language）將返回false。當我創建serviceFactory的實例時，我將$ router實例傳遞給$ serviceFactory構造函數。路由器正在工作（否則它不會顯示控制器或視圖），但出於某種原因，當我嘗試從$ serviceFactory實例中__get語言時，它返回false，我對此感到困惑。

的index.php

//create an instance of serviceFactory 
$serviceFactory = new serviceFactory($router); 
var_dump($serviceFactory->language); 

服務工廠

class serviceFactory { 
    private $data = array(); 
    public function __construct($router) { //store the router data 
     $data['language'] = $router->getKey('language'); 
     $data['class'] = $router->getKey('className'); 
     $data['method'] = $router->getKey('method'); 
     $data['arg'] = $router->getKey('arg'); 
    } 
    public function __set($key, $val) { 
     $this->data[$key] = $val; 
    } 
    public function __get($key) { 
     if(isset($this->data[$key])) { 
      return $this->data[$key]; 
     } 
     else { 
      return false; 
     } 
    } 
} 

Answer 1

簡單，你犯了一個常見的錯誤與實例工作：

$data['language'] = $router->getKey('language'); 
    $data['class'] = $router->getKey('className'); 
    $data['method'] = $router->getKey('method'); 
    $data['arg'] = $router->getKey('arg'); 

都應該

$this->data['language'] = $router->getKey('language'); 
    $this->data['class'] = $router->getKey('className'); 
    $this->data['method'] = $router->getKey('method'); 
    $this->data['arg'] = $router->getKey('arg');