Thinkphp3.2 TP3.2登录验证

public function check_login($code='',$password='',$account='')

{

    $account = I('account');

    $pw = I('password');

    // $verify=I('verify');

    if ($account =='' || $pw == '') {

        $this->error('请输入用户名或密码');

        return;

    }
    $verify = new \Think\Verify();

    $ckcode = $verify->check($code, '');

    if (!$ckcode) {

        $this->error('验证码错误！');

    }
    $User = D('User');

    $map['account'] = $account;

    $map['password'] = md5($pw);

    $u = $User->where($map)->find();

    //检查用户的角色组是否禁用

    $role_where['rid'] = $u['rid'];

    $roleData = D('Role')->where($role_where)->find();

    if($roleData['status'] == 0) {

        $this->error($roleData['name'].'已被禁止访问');

    }
    if ($u) {

        if (!$u['status']) {

            $this->error('该用户已被锁定！');

        }
    unset($map);

    unset($data);

    $map['id'] = $u['id'];

    $data['last_login_ip'] = get_client_ip();

    $data['last_login_time'] = time();

    $data['login_count'] = $u['login_count'] + 1;

    $User->where($map)->save($data);

    session('login_time',$data['last_login_time']);

    session('login_ip',$data['last_login_ip']);

    session('uid',$u['id']);

    session('nickname',$u['name']);

    session('account',$u['account']);

    session('rid',$u['rid']);

    session('area',$u['area']);

    session('area_code',$u['area_code']);

        if ($u['user_type'] == 'admin') {
            $this->success('登陆成功',U('Admin/Index/index'));
        }
   }else{
    $this->error('用户名或密码错误');
  }
}