微信公众号开发之文本消息自动回复php代码

5年以前 | 阅读数：1081 次 | 编程语言：PHP

本文实例为大家分享了php微信文本消息自动回复别代码，供大家参考，具体内容如下

1.PHP示例代码下载
下载地址1：http://xiazai.jb51.net/201608/yuanma/phpwx(jb51.net).rar
下载地址2：https://mp.weixin.qq.com/wiki/home/index.html（开始开发-》接入指南-》PHP示例代码下载）

2.wx_sample.php初始代码


    <?php
    /**
     * wechat php test
     */

    //define your token
    define("TOKEN", "weixin");
    $wechatObj = new wechatCallbackapiTest();
    $wechatObj->valid();

    class wechatCallbackapiTest
    {
     public function valid()
     {
     $echoStr = $_GET["echostr"];

     //valid signature , option
     if($this->checkSignature()){
     echo $echoStr;
     exit;
     }
     }

     public function responseMsg()
     {
     //get post data, May be due to the different environments
     $postStr = $GLOBALS["HTTP_RAW_POST_DATA"];

     //extract post data
     if (!empty($postStr)){
     /* 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;
     $keyword = trim($postObj->Content);
     $time = time();
     $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>"; 
     if(!empty( $keyword ))
     {
      $msgType = "text";
      $contentStr = "Welcome to wechat world!";
      $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
      echo $resultStr;
     }else{
      echo "Input something...";
     }

     }else {
     echo "";
     exit;
     }
     }

     private function checkSignature()
     {
     // you must define TOKEN by yourself
     if (!defined("TOKEN")) {
     throw new Exception('TOKEN is not defined!');
     }

     $signature = $_GET["signature"];
     $timestamp = $_GET["timestamp"];
     $nonce = $_GET["nonce"];

     $token = TOKEN;
     $tmpArr = array($token, $timestamp, $nonce);
     // use SORT_STRING rule
     sort($tmpArr, SORT_STRING);
     $tmpStr = implode( $tmpArr );
     $tmpStr = sha1( $tmpStr );

     if( $tmpStr == $signature ){
     return true;
     }else{
     return false;
     }
     }
    }

    ?>

3.调用回复信息方法
在wx_sample.php文件中注释掉$wechatObj->valid();，在其下增加一句"$wechatObj->responseMsg();"。


    <?php
    /**
     * wechat php test
     */

    //define your token
    define("TOKEN", "weixin");
    $wechatObj = new wechatCallbackapiTest();
    //$wechatObj->valid();//接口验证
    $wechatObj->responseMsg();//调用回复消息方法
    class wechatCallbackapiTest
    {
     public function valid()
     {
     $echoStr = $_GET["echostr"];

     //valid signature , option
     if($this->checkSignature()){
     echo $echoStr;
     exit;
     }
     }

     public function responseMsg()
     {
     //get post data, May be due to the different environments
     $postStr = $GLOBALS["HTTP_RAW_POST_DATA"];

     //extract post data
     if (!empty($postStr)){
     /* 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;
     $keyword = trim($postObj->Content);
     $time = time();
     $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>"; 
     if(!empty( $keyword ))
     {
      $msgType = "text";
      $contentStr = "Welcome to wechat world!";
      $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
      echo $resultStr;
     }else{
      echo "Input something...";
     }

     }else {
     echo "";
     exit;
     }
     }

     private function checkSignature()
     {
     // you must define TOKEN by yourself
     if (!defined("TOKEN")) {
     throw new Exception('TOKEN is not defined!');
     }

     $signature = $_GET["signature"];
     $timestamp = $_GET["timestamp"];
     $nonce = $_GET["nonce"];

     $token = TOKEN;
     $tmpArr = array($token, $timestamp, $nonce);
     // use SORT_STRING rule
     sort($tmpArr, SORT_STRING);
     $tmpStr = implode( $tmpArr );
     $tmpStr = sha1( $tmpStr );

     if( $tmpStr == $signature ){
     return true;
     }else{
     return false;
     }
     }
    }

    ?>

4.关键词自动回复和关注回复
$keyword保存着用户微信端发来的文本信息。
官方开发者文档：https://mp.weixin.qq.com/wiki/home/index.html（消息管理-》接收消息-接收事件推送-》1.关注/取消关注事件）

关注事件与一般的文本消息有两处不同，一是MsgType值是event，二是增加了Event值是subscribe。由于官方文档（最初的wx_sample.php）没有提取这个参数，需要我们自己提取。在程序中增加两个变量$msgType和$event。


    <?php
    /**
     * wechat php test
     */

    //define your token
    define("TOKEN", "weixin");
    $wechatObj = new wechatCallbackapiTest();
    //$wechatObj->valid();//接口验证
    $wechatObj->responseMsg();//调用回复消息方法
    class wechatCallbackapiTest
    {
     public function valid()
     {
     $echoStr = $_GET["echostr"];

     //valid signature , option
     if($this->checkSignature()){
     echo $echoStr;
     exit;
     }
     }

     public function responseMsg()
     {
     //get post data, May be due to the different environments
     $postStr = $GLOBALS["HTTP_RAW_POST_DATA"];

     //extract post data
     if (!empty($postStr)){
     /* 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;
     $keyword = trim($postObj->Content);
     $time = time();
     $msgType = $postObj->MsgType;//消息类型
     $event = $postObj->Event;//时间类型，subscribe（订阅）、unsubscribe（取消订阅）
     $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>"; 

     switch($msgType){
      case "event":
      if($event=="subscribe"){
      $contentStr = "Hi,欢迎关注海仙日用百货!"."\n"."回复数字'1',了解店铺地址."."\n"."回复数字'2',了解商品种类.";
      } 
      break;
      case "text":
      switch($keyword){
      case "1":
      $contentStr = "店铺地址："."\n"."杭州市江干艮山西路233号新东升市场地下室第一排."; 
      break;
      case "2":
      $contentStr = "商品种类:"."\n"."杯子、碗、棉签、水桶、垃圾桶、洗碗巾(刷)、拖把、扫把、"
       ."衣架、粘钩、牙签、垃圾袋、保鲜袋(膜)、剪刀、水果刀、饭盒等.";
      break;
      default:
      $contentStr = "对不起,你的内容我会稍后回复";
      }
      break;
     }
     $msgType = "text";
     $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
     echo $resultStr;
     }else {
     echo "";
     exit;
     }
     }

     private function checkSignature()
     {
     // you must define TOKEN by yourself
     if (!defined("TOKEN")) {
     throw new Exception('TOKEN is not defined!');
     }

     $signature = $_GET["signature"];
     $timestamp = $_GET["timestamp"];
     $nonce = $_GET["nonce"];

     $token = TOKEN;
     $tmpArr = array($token, $timestamp, $nonce);
     // use SORT_STRING rule
     sort($tmpArr, SORT_STRING);
     $tmpStr = implode( $tmpArr );
     $tmpStr = sha1( $tmpStr );

     if( $tmpStr == $signature ){
     return true;
     }else{
     return false;
     }
     }
    }


    ?>

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。