这里是我的示例代码级用户,但是当我加入的公共方法静态方法不工作: <?php
namespace App\Classic;
class User
{
public $username;
public static $upassword;
public $age;
public $message;
public function user
说我有下面的类: class Test
{
private static $instance = false;
public static function test()
{
if(!self::$instance)
{
self::$instance = new self();
}
return s