Voice message recognition php code for WeChat public account development

This article mainly introduces the php code for voice message recognition in WeChat public account development in detail. It has certain reference value. Interested friends can refer to it

The example in this article shares the php WeChat voice message recognition code for everyone. , for your reference, the specific content is as follows

1. Turn on voice recognition (off by default)

2. Voice recognition

Please note that after voice recognition is turned on, the user will send voice to the official account every time When, WeChat will add a Recognition field to the pushed voice message XML packet (Note: Due to client caching, developers enable or disable the speech recognition function, which will take effect immediately for new followers and take 24 hours to take effect for already followed users. . Developers can re-follow this account for testing). The voice XML data package after turning on speech recognition is as follows:

<?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, &#39;SimpleXMLElement&#39;, 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"){
      $contentStr = "Hi,欢迎关注海仙日用百货!"."\n"."回复数字&#39;1&#39;,了解店铺地址."."\n"."回复数字&#39;2&#39;,了解商品种类.";
     } 
     break;
     case "text"://文本消息
      switch($keyword){
       case "1":
       $contentStr = "店铺地址："."\n"."杭州市江干区."; 
       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;
     case "voice"://语音消息
     //语音识别
     $recognition = $postObj->Recognition;
     $format = $postObj->Format;
     $contentStr = "你发送的是语音消息"."\n"."语音格式为:"."\n".$format."\n"."语音内容为:"."\n".$recognition;
     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(&#39;TOKEN is not defined!&#39;);
  }
  
  $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;
  }
 }
}


?>

The above is the entire content of this article. I hope it will be helpful to everyone's learning, and I hope everyone will support the script. Home.