微信公众号开发之语音消息识别php代码

本文实例为大家分享了php微信语音消息识别代码，供大家参考，具体内容如下

1.开通语音识别（默认关闭）

2.语音识别

请注意，开通语音识别后，用户每次发送语音给公众号时，微信会在推送的语音消息XML数据包中，增加一个Recognition字段（注：由于客户端缓存，开发者开启或者关闭语音识别功能，对新关注者立刻生效，对已关注用户需要24小时生效。开发者可以重新关注此帐号进行测试）。开启语音识别后的语音XML数据包如下：

    <?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"){
          $contentStr = "Hi,欢迎关注海仙日用百货!"."\n"."回复数字'1',了解店铺地址."."\n"."回复数字'2',了解商品种类.";
         } 
         break;
         case "text"://文本消息
          switch($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('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。