Using php to develop WeChat attention events

This article mainly introduces the events of concern in php WeChat development in detail. It has certain reference value. Interested friends can refer to it.

The examples in this article share with everyone the events of concern in php WeChat. The specific code is for your reference. The specific content is as follows

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

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

        $postObj = simplexml_load_string($postStr, &#39;SimpleXMLElement&#39;, LIBXML_NOCDATA);
        $fromUsername = $postObj->FromUserName;
        $toUsername = $postObj->ToUserName;
        $type = $postObj->MsgType;
        $customevent = $postObj->Event;
        $keyword = trim($postObj->Content);
        $time = time();
        $textTpl = "<xml>
              <ToUserName><![CDATA[%s]]></ToUserName>
              <FromUserName><![CDATA[%s]]></FromUserName>
              <CreateTime>%s</CreateTime>
              <MsgType><![CDATA[%s]]></MsgType>
              <Content><![CDATA[%s]]></Content>
              <FuncFlag>0</FuncFlag>
              </xml>";       
        if($type=="event" and $customrevent=="subscribe"){
          $contentStr = "感谢你的关注\n回复1查看联系方式\n回复2查看最新资讯\n回复3查看法律文书";
          $msgType = "text";
          $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
          echo $resultStr;
          }  
        if(!empty( $keyword ))
        {                
          $msgType = "text";
          if($keyword=="1"){
          $contentStr = "qiphon";}
          if($keyword=="2"){
          $contentStr = "test 。";}
          if($keyword=="3"){
          $contentStr = "test333";}         
          $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
          echo $resultStr;
        }else{
          echo "Input something...";
        }

    }else {
      echo "";
      exit;
    }
  }

  private function checkSignature()
  {
    $signature = $_GET["signature"];
    $timestamp = $_GET["timestamp"];
    $nonce = $_GET["nonce"];  

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

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

?>

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