向东博客 专注WEB应用 构架之美 --- 构架之美，在于尽态极妍 | 应用之美，在于药到病除|赢在IT，Playin' with IT,Focus on Killer Application,Marketing Meets Technology.

<?php
class Container {
    public $foo;
    function __construct() {
        $this->foo=new Proxy($this);
    }
}
class Proxy {
    private $container;
    function __construct($container) {
        $this->container=$container;
    }
    function go() {
        $this->container->foo=10;
    }
}
$c=new Container;
echo "开始\n";
echo 'gettype($c->foo) = \''.gettype($c->foo)."'\n";
echo 'get_class($c->foo) = \''.get_class($c->foo)."'\n";
echo "然后\n";
$c->foo->go();
echo 'gettype($c->foo) = \''.gettype($c->foo)."'\n";
echo '$c->foo = '.$c->foo."\n";
?>

class Container {
    var $p;
    function __construct() {
        $this->p=new Proxy($this,'p','Target');
    }
}

class Target {
    var $v=777;
}

class Proxy {
    private $container;
    private $property;
    private $className;
    function __construct(&amp;$container, $property, $class) {
        $this->container=&amp;$container;
        $this->property=$property;
        $this->className=$class;
    }

    function __get($key) {
        $class=$this->className;
        $obj=new $class;
        $property=$this->property;
        $this->container->$property=$obj;
        return $obj->$key;
    }

    function __call($func, $arg) {
        $class=$this->className;
        $obj=new $class;
        $property=$this->property;
        $this->container->$property=$obj;
        return call_user_func_array(array($obj,$func), $arg);
    }
}

$c=new Container;
echo get_class($c->p)."\n";
echo $c->p->v."\n";
echo get_class($c->p)."\n";
echo $c->p->v."\n";