微信公眾號開發之語音消息識別，公眾語音
1.開通語音識別（默認關閉）
2.語音識別
請注意，開通語音識別後，用戶每次發送語音給公眾號時，微信會在推送的語音消息XML數據包中，增加一個Recognition字段（注：由於客戶端緩存，開發者開啟或者關閉語音識別功能，對新關注者立刻生效，對已關注用戶需要24小時生效。開發者可以重新關注此帳號進行測試）。開啟語音識別後的語音XML數據包如下：
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1 <?php
2 /**
3 * wechat php test
4 */
5
6 //define your token
7 define("TOKEN", "weixin");
8 $wechatObj = new wechatCallbackapiTest();
9 //$wechatObj->valid();//接口驗證
10 $wechatObj->responseMsg();//調用回復消息方法
11 class wechatCallbackapiTest
12 {
13 public function valid()
14 {
15 $echoStr = $_GET["echostr"];
16
17 //valid signature , option
18 if($this->checkSignature()){
19 echo $echoStr;
20 exit;
21 }
22 }
23
24 public function responseMsg()
25 {
26 //get post data, May be due to the different environments
27 $postStr = $GLOBALS["HTTP_RAW_POST_DATA"];
28
29 //extract post data
30 if (!empty($postStr)){
31 /* libxml_disable_entity_loader is to prevent XML eXternal Entity Injection,
32 the best way is to check the validity of xml by yourself */
33 libxml_disable_entity_loader(true);
34 $postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);
35 $fromUsername = $postObj->FromUserName;
36 $toUsername = $postObj->ToUserName;
37 $keyword = trim($postObj->Content);
38 $time = time();
39 $msgType = $postObj->MsgType;//消息類型
40 $event = $postObj->Event;//時間類型，subscribe（訂閱）、unsubscribe（取消訂閱）
41
42 $textTpl = "<xml>
43 <ToUserName><![CDATA[%s]]></ToUserName>
44 <FromUserName><![CDATA[%s]]></FromUserName>
45 <CreateTime>%s</CreateTime>
46 <MsgType><![CDATA[%s]]></MsgType>
47 <Content><![CDATA[%s]]></Content>
48 <FuncFlag>0</FuncFlag>
49 </xml>";
50
51 switch($msgType){
52 case "event":
53 if($event=="subscribe"){
54 $contentStr = "Hi,歡迎關注海仙日用百貨!"."\n"."回復數字'1',了解店鋪地址."."\n"."回復數字'2',了解商品種類.";
55 }
56 break;
57 case "text"://文本消息
58 switch($keyword){
59 case "1":
60 $contentStr = "店鋪地址："."\n"."杭州市江干區.";
61 break;
62 case "2":
63 $contentStr = "商品種類:"."\n"."杯子、碗、棉簽、水桶、垃圾桶、洗碗巾(刷)、拖把、掃把、"
64 ."衣架、粘鉤、牙簽、垃圾袋、保鮮袋(膜)、剪刀、水果刀、飯盒等.";
65 break;
66 default:
67 $contentStr = "對不起,你的內容我會稍後回復";
68 }
69 break;
70 case "voice"://語音消息
71 //語音識別
72 $recognition = $postObj->Recognition;
73 $format = $postObj->Format;
74 $contentStr = "你發送的是語音消息"."\n"."語音格式為:"."\n".$format."\n"."語音內容為:"."\n".$recognition;
75 break;
76 }
77 $msgType = "text";
78 $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
79 echo $resultStr;
80 }else {
81 echo "";
82 exit;
83 }
84 }
85
86 private function checkSignature()
87 {
88 // you must define TOKEN by yourself
89 if (!defined("TOKEN")) {
90 throw new Exception('TOKEN is not defined!');
91 }
92
93 $signature = $_GET["signature"];
94 $timestamp = $_GET["timestamp"];
95 $nonce = $_GET["nonce"];
96
97 $token = TOKEN;
98 $tmpArr = array($token, $timestamp, $nonce);
99 // use SORT_STRING rule
100 sort($tmpArr, SORT_STRING);
101 $tmpStr = implode( $tmpArr );
102 $tmpStr = sha1( $tmpStr );
103
104 if( $tmpStr == $signature ){
105 return true;
106 }else{
107 return false;
108 }
109 }
110 }
111
112
113 ?>
語音識別
