微信公众号开发之（35）地图导航

地图导航

• http://api.map.baidu.com/direction?origin=latlng:{$latitude},{$longitude}|name:你的位置&destination=latlng:23.378341,116.706653|name:我的公司&mode=driving&region=汕头&output=html&src=yourCompanyName|yourAppName

核心代码如下：

$postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);
                $fromUsername = $postObj->FromUserName;
                $toUsername = $postObj->ToUserName;
                $MsgType=$postObj->MsgType;
                $latitude=$postObj->Location_X;
                $longitude =$postObj->Location_Y;
                $time = time();
                $textTpl = "<xml>
                            <ToUserName><![CDATA[%s]]></ToUserName>
                            <FromUserName><![CDATA[%s]]></FromUserName>
                            <CreateTime>%s</CreateTime>
                            <MsgType><![CDATA[news]]></MsgType>
                             <ArticleCount>1</ArticleCount>
                             <Articles>
                             <item>
                             <Title><![CDATA[导航]]></Title> 
                             <Description><![CDATA[点击后导航到我的公司]]></Description>
                             <PicUrl><![CDATA[]]></PicUrl>
                             <Url><![CDATA[%s]]></Url>
                            </item>
                            </Articles>
                            <FuncFlag>0</FuncFlag>
                            </xml>";             


                if($MsgType=="location")

                {
                    $url="http://api.map.baidu.com/direction?origin=latlng:{$latitude},{$longitude}|name:九江&destination=latlng:23.378341,116.706653|name:我的公司&mode=driving&region=汕头&output=html&src=yourCompanyName|yourAppName";

                    $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time,$url);
                    echo $resultStr;
                }

index.php整体代码如下：

<?php
/**
  * wechat php test
  */



//define your token
define("TOKEN", "weixin");
$wechatObj = new wechatCallbackapiTest();
$wechatObj->responseMsg();

class wechatCallbackapiTest
{
    public function valid()
    {
        $echoStr = $_GET["echostr"];

        //valid signature , option
        if($this->checkSignature()){
            echo $echoStr;
            exit;
        }
    }

    public function responseMsg()
    {
        //get post data, May be due to the different environments
        $postStr = $GLOBALS["HTTP_RAW_POST_DATA"];


                //extract post data
        if (!empty($postStr)){

                $postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);
                $fromUsername = $postObj->FromUserName;
                $toUsername = $postObj->ToUserName;
                $MsgType=$postObj->MsgType;
                $latitude=$postObj->Location_X;
                $longitude =$postObj->Location_Y;
                $time = time();
                $textTpl = "<xml>
                            <ToUserName><![CDATA[%s]]></ToUserName>
                            <FromUserName><![CDATA[%s]]></FromUserName>
                            <CreateTime>%s</CreateTime>
                            <MsgType><![CDATA[news]]></MsgType>
                             <ArticleCount>1</ArticleCount>
                             <Articles>
                             <item>
                             <Title><![CDATA[导航]]></Title> 
                             <Description><![CDATA[点击后导航到我的公司]]></Description>
                             <PicUrl><![CDATA[]]></PicUrl>
                             <Url><![CDATA[%s]]></Url>
                            </item>
                            </Articles>
                            <FuncFlag>0</FuncFlag>
                            </xml>";             


                if($MsgType=="location")

                {
                    $url="http://api.map.baidu.com/direction?origin=latlng:{$latitude},{$longitude}|name:九江&destination=latlng:23.378341,116.706653|name:我的公司&mode=driving&region=汕头&output=html&src=yourCompanyName|yourAppName";

                    $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time,$url);
                    echo $resultStr;
                }



            }
    }

    private function checkSignature()
    {
        $signature = $_GET["signature"];
        $timestamp = $_GET["timestamp"];
        $nonce = $_GET["nonce"];    

        $token = TOKEN;
        $tmpArr = array($token, $timestamp, $nonce);
        sort($tmpArr);
        $tmpStr = implode( $tmpArr );
        $tmpStr = sha1( $tmpStr );

        if( $tmpStr == $signature ){
            return true;
        }else{
            return false;
        }
    }
}

?>