PHP类动态属性问题

动态属性问题给程序带来很多麻烦，以下是一位朋友的解决方法如下：

From : http://bbs.php100.com/read-htm-tid-25526.html

<?php

class testClass {

    private $va;
    private $vb;
    private $vc;
    private $allVars;

    public function __construct(){
        echo 'testClass __construct'.'</br>';
        //$this->va = 1;
        $this->getAllVars();
    }

    public function __GET($name) {
        return $this->$name;
    }
    public function __SET($name, $value) {
        foreach($this->allVars as $key) {
            if ($name == "$key") {
                $this->$name = $value;
                return;
            }
        }
        throw new exception ('你访问了未定义的属性');
    }
    private function getAllProps() {
        $r = new ReflectionClass($this);
        return ($r->getProperties());

    }
    private function getAllVars() {
        $classProps = $this->getAllProps();
        foreach($classProps as $key)
        {
            $temparr =    get_object_vars($key);
            $this->allVars[] .= $temparr['name'];
        }
    }
}

$rc = new testClass();
$rc->va = 5;
$rc->vb = 5;
$rc->vc = 5;
$rc->vd = 6;
?>