对于新关注的用户，在其关注时直接将其用户信息插入数据库表，方法与同步信息时类似。对于取消关注的用户，使用db助手函数将其从表中删除。其相应代码如下。
1 // 接收事件消息 2 private function receiveEvent($object) 3 { 4 $weixin = new /weixin/Wxapi; 5 $openid = strval($object->FromUserName); 6 $content = ""; 7 switch ($object->Event) 8 { 9 case "subscribe":10 $info = $weixin->get_user_info($openid);11 $municipalities = array("北京", "上海", "天津", "重庆", "香港", "澳门");12 $sexes = array("", "男", "女");13 $data = array;14 $data['openid'] = $openid;15 $data['nickname'] = str_replace("'", "", $info['nickname']);16 $data['sex'] = $sexes[$info['sex']];17 $data['country'] = $info['country'];18 $data['province'] = $info['province'];19 $data['city'] = (in_array($info['province'], $municipalities))?$info ['province'] : $info['city'];20 $data['scene'] = (isset($object->EventKey) && (stripos(strval($object-> EventKey),"qrscene_")))?str_replace("qrscene_","",$object->EventKey):"0";21 $data['headimgurl'] = $info['headimgurl'];22 $data['subscribe'] = $info['subscribe_time'];23 $data['heartbeat'] = time;24 $data['remark'] = $info['remark'];25 $data['score'] = 1;26 $data['tagid'] = $info['tagid_list'];27 Db::name('user')->insert($data);28 $content = "欢迎关注，".$info['nickname'];29 break;30 case "unsubscribe":31 db('user')->where('openid',$openid)->delete;32 break;33 default:34 $content = "";35 break;36 }37 if(is_array($content)){38 $result = $this->transmitNews($object, $content);39 }else{40 $result = $this->transmitText($object, $content);41 }42 return $result;43 }