微信公眾號開發之文本消息自動回復，公眾自動回復
1.PHP示例代碼下載
下載地址1：http://pan.baidu.com/s/1nvlhbnV、
下載地址2：https://mp.weixin.qq.com/wiki/home/index.html（開始開發-》接入指南-》PHP示例代碼下載）
2.wx_sample.php初始代碼
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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();
10
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 $textTpl = "<xml>
40 <ToUserName><![CDATA[%s]]></ToUserName>
41 <FromUserName><![CDATA[%s]]></FromUserName>
42 <CreateTime>%s</CreateTime>
43 <MsgType><![CDATA[%s]]></MsgType>
44 <Content><![CDATA[%s]]></Content>
45 <FuncFlag>0</FuncFlag>
46 </xml>";
47 if(!empty( $keyword ))
48 {
49 $msgType = "text";
50 $contentStr = "Welcome to wechat world!";
51 $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
52 echo $resultStr;
53 }else{
54 echo "Input something...";
55 }
56
57 }else {
58 echo "";
59 exit;
60 }
61 }
62
63 private function checkSignature()
64 {
65 // you must define TOKEN by yourself
66 if (!defined("TOKEN")) {
67 throw new Exception('TOKEN is not defined!');
68 }
69
70 $signature = $_GET["signature"];
71 $timestamp = $_GET["timestamp"];
72 $nonce = $_GET["nonce"];
73
74 $token = TOKEN;
75 $tmpArr = array($token, $timestamp, $nonce);
76 // use SORT_STRING rule
77 sort($tmpArr, SORT_STRING);
78 $tmpStr = implode( $tmpArr );
79 $tmpStr = sha1( $tmpStr );
80
81 if( $tmpStr == $signature ){
82 return true;
83 }else{
84 return false;
85 }
86 }
87 }
88
89 ?>
wx_sample.php
3.調用回復信息方法
在wx_sample.php文件中注釋掉$wechatObj->valid();，在其下增加一句“$wechatObj->responseMsg();”。
![]()
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 $textTpl = "<xml>
40 <ToUserName><![CDATA[%s]]></ToUserName>
41 <FromUserName><![CDATA[%s]]></FromUserName>
42 <CreateTime>%s</CreateTime>
43 <MsgType><![CDATA[%s]]></MsgType>
44 <Content><![CDATA[%s]]></Content>
45 <FuncFlag>0</FuncFlag>
46 </xml>";
47 if(!empty( $keyword ))
48 {
49 $msgType = "text";
50 $contentStr = "Welcome to wechat world!";
51 $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
52 echo $resultStr;
53 }else{
54 echo "Input something...";
55 }
56
57 }else {
58 echo "";
59 exit;
60 }
61 }
62
63 private function checkSignature()
64 {
65 // you must define TOKEN by yourself
66 if (!defined("TOKEN")) {
67 throw new Exception('TOKEN is not defined!');
68 }
69
70 $signature = $_GET["signature"];
71 $timestamp = $_GET["timestamp"];
72 $nonce = $_GET["nonce"];
73
74 $token = TOKEN;
75 $tmpArr = array($token, $timestamp, $nonce);
76 // use SORT_STRING rule
77 sort($tmpArr, SORT_STRING);
78 $tmpStr = implode( $tmpArr );
79 $tmpStr = sha1( $tmpStr );
80
81 if( $tmpStr == $signature ){
82 return true;
83 }else{
84 return false;
85 }
86 }
87 }
88
89 ?>
調用回復信息方法
4.關鍵詞自動回復和關注回復
$keyword保存著用戶微信端發來的文本信息。
官方開發者文檔：https://mp.weixin.qq.com/wiki/home/index.html（消息管理-》接收消息-接收事件推送-》1.關注/取消關注事件）
關注事件與一般的文本消息有兩處不同，一是MsgType值是event，二是增加了Event值是subscribe。由於官方文檔（最初的wx_sample.php）沒有提取這個參數，需要我們自己提取。在程序中增加兩個變量$msgType和$event。
![]()
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 $textTpl = "<xml>
42 <ToUserName><![CDATA[%s]]></ToUserName>
43 <FromUserName><![CDATA[%s]]></FromUserName>
44 <CreateTime>%s</CreateTime>
45 <MsgType><![CDATA[%s]]></MsgType>
46 <Content><![CDATA[%s]]></Content>
47 <FuncFlag>0</FuncFlag>
48 </xml>";
49
50 switch($msgType){
51 case "event":
52 if($event=="subscribe"){
53 $contentStr = "Hi,歡迎關注海仙日用百貨!"."\n"."回復數字'1',了解店鋪地址."."\n"."回復數字'2',了解商品種類.";
54 }
55 break;
56 case "text":
57 switch($keyword){
58 case "1":
59 $contentStr = "店鋪地址："."\n"."杭州市江干艮山西路233號新東升市場地下室第一排.";
60 break;
61 case "2":
62 $contentStr = "商品種類:"."\n"."杯子、碗、棉簽、水桶、垃圾桶、洗碗巾(刷)、拖把、掃把、"
63 ."衣架、粘鉤、牙簽、垃圾袋、保鮮袋(膜)、剪刀、水果刀、飯盒等.";
64 break;
65 default:
66 $contentStr = "對不起,你的內容我會稍後回復";
67 }
68 break;
69 }
70 $msgType = "text";
71 $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
72 echo $resultStr;
73 }else {
74 echo "";
75 exit;
76 }
77 }
78
79 private function checkSignature()
80 {
81 // you must define TOKEN by yourself
82 if (!defined("TOKEN")) {
83 throw new Exception('TOKEN is not defined!');
84 }
85
86 $signature = $_GET["signature"];
87 $timestamp = $_GET["timestamp"];
88 $nonce = $_GET["nonce"];
89
90 $token = TOKEN;
91 $tmpArr = array($token, $timestamp, $nonce);
92 // use SORT_STRING rule
93 sort($tmpArr, SORT_STRING);
94 $tmpStr = implode( $tmpArr );
95 $tmpStr = sha1( $tmpStr );
96
97 if( $tmpStr == $signature ){
98 return true;
99 }else{
100 return false;
101 }
102 }
103 }
104
105
106 ?>
關鍵詞回復和關注回復
