微信公众号开发之文本消息自动回复,以及系统关注自动回复，php代码

以tshop为例

直接上代码：

企业 cc_wx_sys表为自建，存储系统消息的配置的

字段: id type key status

<?php
/*** tpshop* ============================================================================* * 版权所有 2015-2027 深圳搜豹网络科技有限公司，并保留所有权利。* 网站地址: http://www.tp-shop.cn* ----------------------------------------------------------------------------* 这不是一个自由软件！您只能在不用于商业目的的前提下对程序代码进行修改和使用 .* 不允许对程序代码以任何形式任何目的的再发布。* ============================================================================* 微信交互类*/ 
namespace Home\Controller;
use Think\Controller;
class WeixinController extends BaseController {public $client;public $wechat_config;public function _initialize(){parent::_initialize();//获取微信配置信息$this->wechat_config = M('wx_user')->find();        $options = array('token'=>$this->wechat_config['w_token'], //填写你设定的key'encodingaeskey'=>$this->wechat_config['aeskey'], //填写加密用的EncodingAESKey'appid'=>$this->wechat_config['appid'], //填写高级调用功能的app id'appsecret'=>$this->wechat_config['appsecret'], //填写高级调用功能的密钥
                );}public function oauth(){}public function index(){if($this->wechat_config['wait_access'] == 0)        exit($_GET["echostr"]);else        $this->responseMsg();}    public function responseMsg(){//get post data, May be due to the different environments$postStr = $GLOBALS["HTTP_RAW_POST_DATA"];//extract post dataif (empty($postStr))                     exit("");/* libxml_disable_entity_loader is to prevent XML eXternal Entity Injection,the best way is to check the validity of xml by yourself */libxml_disable_entity_loader(true);$postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);$fromUsername = $postObj->FromUserName;$toUsername = $postObj->ToUserName;$time = time();$keyword = trim($postObj->Content);$msgtype = 'text'; //消息类型：文本$textTp1sys = "<xml><ToUserName><![CDATA[%s]]></ToUserName><FromUserName><![CDATA[%s]]></FromUserName><CreateTime>%s</CreateTime><MsgType><![CDATA[%s]]></MsgType><Content><![CDATA[%s]]></Content></xml>";$textTpl2sys = "<xml><ToUserName><![CDATA[%s]]></ToUserName><FromUserName><![CDATA[%s]]></FromUserName><CreateTime>%s</CreateTime><MsgType><![CDATA[%s]]></MsgType><ArticleCount><![CDATA[%s]]></ArticleCount><Articles><item><Title><![CDATA[%s]]></Title> <Description><![CDATA[%s]]></Description><PicUrl><![CDATA[%s]]></PicUrl><Url><![CDATA[%s]]></Url></item>                               </Articles></xml>";//点击菜单拉取消息时的事件推送/** 1、click：点击推事件* 用户点击click类型按钮后，微信服务器会通过消息接口推送消息类型为event的结构给开发者（参考消息接口指南）* 并且带上按钮中开发者填写的key值，开发者可以通过自定义的key值与用户进行交互；*/if($postObj->MsgType == 'event' && $postObj->Event == 'CLICK'){$keyword = trim($postObj->EventKey);}/*系统关注,回复*/if($postObj->MsgType == 'event') {if ($postObj->Event == 'subscribe') { //如果是订阅事件$sys = M('wx_sys')->where("status=1")->find();if($sys) {$keyw=$sys['key'];if($sys['type']==1){$wx_text = M('wx_text')->where("keyword like '%$keyw%'")->find();if ($wx_text) {$contentStr = $wx_text['text'];$resultStr = sprintf($textTp1sys, $fromUsername, $toUsername, $time, $msgtype, $contentStr);echo $resultStr;exit();}}else{$wx_img = M('wx_img')->where("keyword like '%$keyword%'")->find();if($wx_img) {$resultStr = sprintf($textTpl2sys, $fromUsername, $toUsername, $time, 'news', '1', $wx_img['title'], $wx_img['desc'], $wx_img['pic'], $wx_img['url']);exit($resultStr);}}}}}if(empty($keyword))exit("Input something...");// 图文回复$wx_img = M('wx_img')->where("keyword like '%$keyword%'")->find();if($wx_img){$textTpl = "<xml><ToUserName><![CDATA[%s]]></ToUserName><FromUserName><![CDATA[%s]]></FromUserName><CreateTime>%s</CreateTime><MsgType><![CDATA[%s]]></MsgType><ArticleCount><![CDATA[%s]]></ArticleCount><Articles><item><Title><![CDATA[%s]]></Title> <Description><![CDATA[%s]]></Description><PicUrl><![CDATA[%s]]></PicUrl><Url><![CDATA[%s]]></Url></item>                               </Articles></xml>";                                        $resultStr = sprintf($textTpl,$fromUsername,$toUsername,$time,'news','1',$wx_img['title'],$wx_img['desc'], $wx_img['pic'], $wx_img['url']);exit($resultStr);                   }// 文本回复$wx_text = M('wx_text')->where("keyword like '%$keyword%'")->find();if($wx_text){$textTpl = "<xml><ToUserName><![CDATA[%s]]></ToUserName><FromUserName><![CDATA[%s]]></FromUserName><CreateTime>%s</CreateTime><MsgType><![CDATA[%s]]></MsgType><Content><![CDATA[%s]]></Content><FuncFlag>0</FuncFlag></xml>";$contentStr = $wx_text['text'];$resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, 'text', $contentStr);exit($resultStr);}// 其他文本回复                $textTpl = "<xml><ToUserName><![CDATA[%s]]></ToUserName><FromUserName><![CDATA[%s]]></FromUserName><CreateTime>%s</CreateTime><MsgType><![CDATA[%s]]></MsgType><Content><![CDATA[%s]]></Content><FuncFlag>0</FuncFlag></xml>";                    $contentStr = '欢迎来到TPshop商城!';$resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, 'text', $contentStr);exit($resultStr);                   }    
}