PHP 登录【完整代码】

 public function Login()    {        $user=$_POST["uname"];        $pass=$_POST["password"];        //$mpid=$_POST["mpid"];        $n=M("member");        $where["uname"]=$user;        $where["password"]=md5($pass);        $member=$n->where($where)->find();        if($member)        {            $mid=$member["mid"];                       $_SESSION["mid"]=$mid;            $this->ajaxReturn(array("statue"=>true,"message"=>"登录成功!"));        }        else        {            $this->ajaxReturn(array("statue"=>false,"message"=>"用户名或密码错误!"));        }        }