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：http://xiazai.Vevb.com/201608/yuanma/phpwx(Vevb.com).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 tokendefine("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 tokendefine("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; } }}?>