怎么在子类用父类的魔术方法

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？    }    }

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);

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();