在父类中调用如何变量

Question

你好家伙我想在这里一些帮助

我有这个类：

class product 
     { 
      var $title; 
      var $price; 
      function __construct($title1,$price1) 
      { 

      $this->title=$title1; 
      $this->price=$price1; 
      } 
      function set_title($newtitle){ 
      $this->title=$newtitle; 
      } 
      function get_title() { 
      return $this->title; 
      } 
      function set_price($newprice) 
      { 
      return $this->price=$newprice; 

      } 
      function getProductAtrribute() 
      { 

      $x1=$this->title; 
      $x2=$this->price; 
      $x3=$this->**material**; 
      $x4=$this->**size1**; 
      return $allattribute= array("$x1","$x2","x3","x4"); 
     } 
     } 

和其他班组长：

class furinture extends product 
    { 
     var $size; 
     var $material; 

     function __construct($sizeset,$materialset) 
     { 
     parent::__construct(); 

     $this->size=$sizeset; 
     $this->material=$materialset; 
     } 
    function setsize ($size1,$material1) 
    { 
     $this->size=$size1; 
     $this->material=$material1; 
    } 

我试图做我设置的大小和材料的类家具的价值，但从功能得到所有属性在类产品我试图使全局变量，但它不会工作。
注意：$ size和$ material我希望他们定义类似于其定义的家具类

Answer 1

使用公共，私有或保护您的属性而不是var。 那么你可以从$this->price;等访问它...

或者你可以做accesor调用它与parent :: yourMethod（）;

Answer 2

修改你的产品类这样的，

class product 
    { 
     private $title; 
     private $price; 
     private $size; 
     private $material; 

     public function setup_product($title1,$price1) 
     { 
     $this->title=$title1; 
     $this->price=$price1; 
     } 

     public function set_title($newtitle){ 
     $this->title=$newtitle; 
     } 

     public function set_material($material){ 
     $this->material=$material; 
     } 

     public function set_size($size){ 
     $this->size=$size; 
     } 

     public function get_title() { 
     return $this->title; 
     } 

     public function get_price() { 
     return $this->price; 
     } 

     public function set_price($newprice) 
     { 
     return $this->price=$newprice; 

     } 

     public function getProductAtrribute() 
     { 

     $x1=$this->title; 
     $x2=$this->price; 
     $x3=$this->material; 
     $x4=$this->size; 
     return $allattribute= array("$x1","$x2","x3","x4"); 
    } 
    } 

修改家具类;

class furinture extends product 
{ 
    public function __construct($sizeset,$materialset,$title1,$price1) 
    { 
    $this->setup_product($title1,$price1) 
    $this->size=$sizeset; 
    $this->material=$materialset; 
    } 
    public function setsize($size1,$material1) 
    { 
    $this->set_size($size1); 
    $this->set_material($material1); 
    } 

}