如何在子类用父类的魔术方法

程序员文章站 2022-06-05 13:21:53

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怎么在子类用父类的魔术方法

本帖最后由 meenw 于 2014-07-29 12:47:44 编辑父类：P


class P{
    private $name="";
    function __construct(){
        $this->name="hello";
    }
    public function __set($name, $value){        
        $this->$name=$value;      
    }
    public function showName(){
        echo $this->name;
    }
}

子类：C

class C extends P{
    function __construct(){
        parent::__construct();

        //想在这里给P类的$name换个值(你好)怎么做？
    }    
}

$c=new C;
$c->showName;
然后输出：你好
怎么实现？
------解决方案--------------------

class P{
    private $name="";
    function __construct(){
        $this->name="hello";
    }
    public function __set($name, $value){        
        $this->$name=$value;      
    }
    public function showName(){
        echo $this->name;
    }
}
class C extends P{
    function __construct(){
        parent::__construct();
        $this->name = '你好';
    }    
}
$c=new C;
$c->showName();

print_r($c);

你好
C Object
(
[name:P:private] => 你好
)

------解决方案--------------------


class P{
    private $name="";
    function __construct(){
        $this->name="hello";
    }
    public function __set($name, $value){
        $this->$name=$value;
    }
    public function showName(){
        echo $this->name;
    }
}


class C extends P{
    function __construct(){
        parent::__construct();
         //想在这里给P类的$name换个值(你好)怎么做？
		 $this->name = '你好';
    }
}

$obj = new C();
$obj->showName();