微信公众平台开发：初体验

 1 <?php
 2 /**
 3   * wechat php test
 4   * update time: 20150114
 5   */
 6 
 7 //define your token
 8 define("TOKEN", "weixin");
 9 $wechatObj = new wechatCallbackapiTest();
10 if (isset($_GET[‘echostr‘])) {
11     $wechatObj->valid();
12 }else{
13     $wechatObj->responseMsg();
14 }
15 
16 class wechatCallbackapiTest
17 {
18     public function valid()
19     {
20         $echoStr = $_GET["echostr"];
21 
22         //valid signature , option
23         if($this->checkSignature()){
24             echo $echoStr;
25             exit;
26         }
27     }
28 
29     public function responseMsg()
30     {
31         //get post data, May be due to the different environments
32         $postStr = $GLOBALS["HTTP_RAW_POST_DATA"];
33 
34           //extract post data
35         if (!empty($postStr)){
36                 
37                 $postObj = simplexml_load_string($postStr, ‘SimpleXMLElement‘, LIBXML_NOCDATA);
38                 $fromUsername = $postObj->FromUserName;
39                 $toUsername = $postObj->ToUserName;
40                 $keyword = trim($postObj->Content);
41                 $time = time();
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                 if(!empty( $keyword ))
51                 {
52   $msgType = "text";
53 $contentStr = "Welcome to wechat world!";
54 $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
55 echo $resultStr;
56                 }else{
57 echo "Input something...";
58                 }
59 
60         }else {
61             echo "";
62             exit;
63         }
64     }
65         
66     private function checkSignature()
67     {
68         $signature = $_GET["signature"];
69         $timestamp = $_GET["timestamp"];
70         $nonce = $_GET["nonce"];
71         $token = TOKEN;
72         $tmpArr = array($token, $timestamp, $nonce);
73         sort($tmpArr, SORT_STRING);
74         $tmpStr = implode( $tmpArr );
75         $tmpStr = sha1( $tmpStr );
76         
77         if( $tmpStr == $signature ){
78             return true;
79         }else{
80             return false;
81         }
82     }
83 }
84 
85 ?>

<xml>
    <ToUserName><![CDATA[toUser]]></ToUserName>
    <FromUserName><![CDATA[fromUser]]></FromUserName> 
    <CreateTime>1348831860</CreateTime>
    <MsgType><![CDATA[text]]></MsgType>
    <Content><![CDATA[this is a test]]></Content>
    <FuncFlag>0</FuncFlag>
</xml>

 1 $fromUsername = $postObj->FromUserName;
 2 $toUsername = $postObj->ToUserName;
 3 $keyword = trim($postObj->Content);
 4 $time = time();
 5 $textTpl = "<xml>
 6            <ToUserName><![CDATA[%s]]></ToUserName>
 7            <FromUserName><![CDATA[%s]]></FromUserName>
 8            <CreateTime>%s</CreateTime>
 9            <MsgType><![CDATA[%s]]></MsgType>
10            <Content><![CDATA[%s]]></Content>
11            <FuncFlag>0</FuncFlag>
12            </xml>";             
13 if(!empty( $keyword ))
14 {
15 　　$msgType = "text";
16 　　$contentStr = "Welcome to wechat world!";
17 　　$resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
18     echo $resultStr;
19 }else{
20      echo "Input something...";
21 }