微信公众号开发之文本消息自动回复php代码

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：
 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。