[转]微信公众平台开发__导航

1. <?php  
2.   
3. //define your token  
4. define("TOKEN", "wechatnow");  
5. $wechatObj = new wechatCallbackapiTest();  
6. $wechatObj->responseMsg();  
7.   
8. class wechatCallbackapiTest  
9. {  
10.     public function valid()  
11.     {  
12.         $echoStr = $_GET["echostr"];  
13.   
14.         //valid signature , option  
15.         if($this->checkSignature()){  
16.             echo $echoStr;  
17.             exit;  
18.         }  
19.     }  
20.   
21.     public function responseMsg()  
22.     {  
23.         //get post data, May be due to the different environments  
24.         $postStr = $GLOBALS["HTTP_RAW_POST_DATA"];  
25.   
26.         //extract post data  
27.         if (!empty($postStr)){  
28.                   
29.               $postObj = simplexml_load_string($postStr, ‘SimpleXMLElement‘, LIBXML_NOCDATA);  
30.                 $fromUsername = $postObj->FromUserName;  
31.                 $toUsername = $postObj->ToUserName;  
32.                 $MsgType=$postObj->MsgType;  
33.         $latitude=$postObj->Location_X;  
34.         $longitude =$postObj->Location_Y;  
35.                 $time = time();  
36.                 $textTpl = "<xml>  
37.                             <ToUserName><![CDATA[%s]]></ToUserName>  
38.                             <FromUserName><![CDATA[%s]]></FromUserName>  
39.                             <CreateTime>%s</CreateTime>  
40.                             <MsgType><![CDATA[news]]></MsgType>  
41.                              <ArticleCount>1</ArticleCount>  
42.                              <Articles>  
43.                              <item>  
44.                              <Title><![CDATA[导航]]></Title>   
45.                              <Description><![CDATA[点击后导航到华师]]></Description>  
46.                              <PicUrl><![CDATA[]]></PicUrl>  
47.                              <Url><![CDATA[%s]]></Url>  
48.                             </item>  
49.                             </Articles>  
50.                             <FuncFlag>0</FuncFlag>  
51.                             </xml>";                    
52.                 if($MsgType=="location")  
53.                   
54.                 {  
55.                    
56.                  $url="http://api.map.baidu.com/direction?origin=latlng:{$latitude},{$longitude}|name:你的位置&destination=latlng:23.14123802754,113.34233164787202|name:我的学校&mode=transit?ion=广州&output=html&src=yourCompanyName|yourAppName";//调用百度地图的api  
57.                     $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time,$url);  
58.                     echo $resultStr;  
59.                 }  
60.   
61.         }  
62.     }  
63.           
64.     private function checkSignature()  
65.     {  
66.         $signature = $_GET["signature"];  
67.         $timestamp = $_GET["timestamp"];  
68.         $nonce = $_GET["nonce"];      
69.                   
70.         $token = TOKEN;  
71.         $tmpArr = array($token, $timestamp, $nonce);  
72.         sort($tmpArr);  
73.         $tmpStr = implode( $tmpArr );  
74.         $tmpStr = sha1( $tmpStr );  
75.           
76.         if( $tmpStr == $signature ){  
77.             return true;  
78.         }else{  
79.             return false;  
80.         }  
81.     }  
82. }  
83.   
84. ?>  

源文地址：http://blog.csdn.net/zhihang527548263/article/details/12684813