如何在子类用父类的魔术方法

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

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

子类：C

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

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

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

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

------解决方案--------------------

<br />class P{<br />    private $name="";<br />    function __construct(){<br />        $this->name="hello";<br />    }<br />    public function __set($name, $value){<br />        $this->$name=$value;<br />    }<br />    public function showName(){<br />        echo $this->name;<br />    }<br />}<br /><br /><br />class C extends P{<br />    function __construct(){<br />        parent::__construct();<br />         //想在这里给P类的$name换个值(你好)怎么做？<br />		 $this->name = '你好';<br />    }<br />}<br /><br />$obj = new C();<br />$obj->showName();<br />