/**
* 查询用户名是否已经注册
*/
public function checkUserName()
{
$username = $_POST['username'];
$userSize = Users::checkUserName($username);
return $userSize;
}
/**
* 查询用户名是否已经注册
*/
public function checkUserName()
{
$username = $_POST['username'];
$userSize = Users::checkUserName($username);
return $userSize;
}