<?php

class Car{//定義一個(gè)Car類并實(shí)例化一個(gè)對(duì)象

? ?public $dx = '大小';

? ?public function getDx(){

? ? ? ?return $this -> dx;

? ?}

}

$classdx = 'Car';

$cardx = new $classdx();

$cardx -> dx = '15m';

echo $cardx -> getDx();

醉了醉了這樣愣是不給過·····非得逼我把變量定義的方法改成直接創(chuàng)建=，=