<?php //权限控制的bug class Human { private $money = 1000; public function getMoney($people) { return $people->money; } public function setMoney($people) { $people->money -= 500; } } $jason = new Human(); $lisi = new Human(); echo $lisi->getMoney($jason) . "<br/>"; $lisi->setMoney($jason); echo $lisi->getMoney($jason);