[转]微信公众平台开发__导航

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.                 $textTpl = "  
37.                               
38.                               
39.                             %s  
40.                               
41.                              1  
42.                                
43.                                
44.                                 
45.                                
46.                                
47.                                
48.                               
49.                               
50.                             0  
51.                             ";                    
52.                 if($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