php微信公众开发之获取周边酒店信息的方法

<?php
 //将提交过来的信息接收
$signature = $_GET['signature'];
 $timestamp = $_GET['timestamp'];
 $nonce = $_GET['nonce'];
 $echostr = $_GET['echostr'];
 $token = "jb51.net";
 //判断接入网站
 
 //进行字典排序
 $arr = array($token,$timestamp,$nonce);
 
 sort($arr);
 
 //完成字符串的拼接和sha1加密
 $result = sha1(join($arr));
 //判断生成的字符串和$signature是否相等，如果相等，直接输出$echostr，这样网站接入成功
 if($result==$signature){
 echo $echostr;
 }
 
 //接收微信公众账号接收到的信息
 $poststr = $GLOBALS["HTTP_RAW_POST_DATA"];
 
 $xmlObj = simplexml_load_string($poststr,'SimpleXMLElement',LIBXML_NOCDATA);
 $ToUserName = $xmlObj->ToUserName;
 $FromUserName = $xmlObj->FromUserName;
 $CreateTime = $xmlObj->CreateTime;
 $MsgType = $xmlObj->MsgType;
 $Content = $xmlObj->Content;
 
 if($MsgType=='location'){
 $Location_X = $xmlObj->Location_X;
 $Location_Y = $xmlObj->Location_Y;
 $Scale = $xmlObj->Scale;
 $Label = $xmlObj->Label;
 
 $urlstr = "http://api.map.baidu.com/place/v2/search?&query=酒店&location=".$Location_X.",".$Location_Y."&radius=5000&output=json&ak=DESY8unmZnUlLB0mlowjuiRr";  //此处ak参数需要个人的百度开发序列号，自己去百度申请下就好了
 $jsonstr = file_get_contents($urlstr);
 $json = json_decode($jsonstr,true);
 
 $pic_640 = "http://api.map.baidu.com/staticimage?width=640&height=320&center=".$Location_Y.",".$Location_X."&zoom=15&markers=".$Location_Y.",".$Location_X."&markerStyles=l,";
 $pic_80 = "http://api.map.baidu.com/staticimage?width=80&height=80&center=".$Location_Y.",".$Location_X."&zoom=15&markers=".$Location_Y.",".$Location_X."&markerStyles=l,";
 $p_640 = file_get_contents($pic_640);
 file_put_contents('./images/640_'.$FromUserName.".png",$p_640);
 $p_80 = file_get_contents($pic_80);
 file_put_contents('./images/80_'.$FromUserName.".png",$p_80);
 echo pic_send($json['results']);
 }
 function pic_send($arr){
 global $ToUserName,$FromUserName;
 $str = "<xml>
 <ToUserName><![CDATA[".$FromUserName."]]></ToUserName>
 <FromUserName><![CDATA[".$ToUserName."]]></FromUserName>
 <CreateTime>".time()."</CreateTime>
 <MsgType><![CDATA[news]]></MsgType>
 <ArticleCount>".count($arr)."</ArticleCount>
 <Articles>";
 foreach($arr as $k=>$v){
 if($k==0){
 $picurl = "http://jb51.net/weixin/images/640_".$FromUserName.".png";
 }else{
 $picurl = "http://jb51.net.net/weixin/images/80_".$FromUserName.".png";
 }
 $str .="
 <item>
 <Title><![CDATA[".$v['name']." 地址：".$v['address']." 电话:".$v['telephone']."]]></Title>
 <Description><![CDATA[".$v['name']." 地址：".$v['address']." 电话:".$v['telephone']."]]></Description>
 <PicUrl><![CDATA[".$picurl."]]></PicUrl>
 <Url><![CDATA[http://api.map.baidu.com/place/detail?uid=".$v['uid']."&output=html&src=".$v['name']."&output=html]]></Url>
 </item>";
 }
 $str .= "</Articles></xml>";
 return $str;
 }
?>