where('id',$id)->field($field)->find(); } public function openIdUserInfo($openid){ $field = 'id,openid,nickname,headimgurl,phone,unionid,status'; return $this->where('openid',$openid)->field($field)->find(); } public function addLoginTime($id) { $this->where('id',$id)->save(['last_login_time' => time()]); } }