此代码运行后为何会输出5?$a = 1;$b = &$a;$c = (++$a) + ($a++);var_dump($c);登录后复制为何会输出5? 分享到： ------解决方案--------------------$c = (++$a) + ($a++);$c = (++1) + ($a++);$c = 2 + 2++;$c = 2 + 3;$c = 5;
