微信公众号开发之（13）天气预报

天气预报

• 地名或经纬度
• 多节点xml解析->a[0]->b
• 
  需要以下接口：
  车辆网API 测距接口API(目前暂未找到)
  车辆网API 天气查询接口API(目前暂未找到)

核心代码：

    $postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);$fromUsername = $postObj->FromUserName;$toUsername = $postObj->ToUserName;$MsgType=$postObj->MsgType;$keyword = trim($postObj->Content);$j=$postObj->Location_X;$w=$postObj->Location_Y;$time = time();$textTpl = "<xml><ToUserName><![CDATA[%s]]></ToUserName><FromUserName><![CDATA[%s]]></FromUserName><CreateTime>%s</CreateTime><MsgType><![CDATA[news]]></MsgType><ArticleCount>3</ArticleCount><Articles><item><Title><![CDATA[%s]]></Title> <Description><![CDATA[s]]></Description><PicUrl><![CDATA[url]]></PicUrl><Url><![CDATA[url]]></Url></item><item><Title><![CDATA[%s]]></Title><Description><![CDATA[s]]></Description><PicUrl><![CDATA[url]]></PicUrl><Url><![CDATA[url]]></Url></item><item><Title><![CDATA[%s]]></Title><Description><![CDATA[s]]></Description><PicUrl><![CDATA[url]]></PicUrl><Url><![CDATA[url]]></Url></item></Articles><FuncFlag>1</FuncFlag></xml>";             if($MsgType=="location"){$url="http://api.map.baidu.com/telematics/v2/weather?location={$w},{$j}&ak=1a3cde429f38434f1811a75e1a90310c";}elseif ($MsgType=="text"){$url="http://api.map.baidu.com/telematics/v2/weather?location={$keyword}&ak=1a3cde429f38434f1811a75e1a90310c";}else{echo "";}$fa=file_get_contents($url);$f=simplexml_load_string($fa);$city=$f->currentCity;$da1=$f->results->result[0]->date;$da2=$f->results->result[1]->date;$da3=$f->results->result[2]->date;     $w1=$f->results->result[0]->weather;$w2=$f->results->result[1]->weather;$w3=$f->results->result[2]->weather;      $p1=$f->results->result[0]->wind;$p2=$f->results->result[1]->wind;$p3=$f->results->result[2]->wind;$q1=$f->results->result[0]->temperature;$q2=$f->results->result[1]->temperature;$q3=$f->results->result[2]->temperature;  $d1=$city.$da1.$w1.$p1.$q1;$d2=$city.$da2.$w2.$p2.$q2;$d3=$city.$da3.$w3.$p3.$q3;                             $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time,$d1,$d2,$d3);echo $resultStr;

index.php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 = $_GET["echostr"];//valid signature , optionif($this->checkSignature()){echo $echoStr;exit;}}public function responseMsg(){
     //get post data, May be due to the different environments$postStr = $GLOBALS["HTTP_RAW_POST_DATA"];//extract post dataif (!empty($postStr)){$postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);$fromUsername = $postObj->FromUserName;$toUsername = $postObj->ToUserName;$MsgType=$postObj->MsgType;$keyword = trim($postObj->Content);$j=$postObj->Location_X;$w=$postObj->Location_Y;$time = time();$textTpl = "<xml><ToUserName><![CDATA[%s]]></ToUserName><FromUserName><![CDATA[%s]]></FromUserName><CreateTime>%s</CreateTime><MsgType><![CDATA[news]]></MsgType><ArticleCount>3</ArticleCount><Articles><item><Title><![CDATA[%s]]></Title> <Description><![CDATA[s]]></Description><PicUrl><![CDATA[url]]></PicUrl><Url><![CDATA[url]]></Url></item><item><Title><![CDATA[%s]]></Title><Description><![CDATA[s]]></Description><PicUrl><![CDATA[url]]></PicUrl><Url><![CDATA[url]]></Url></item><item><Title><![CDATA[%s]]></Title><Description><![CDATA[s]]></Description><PicUrl><![CDATA[url]]></PicUrl><Url><![CDATA[url]]></Url></item></Articles><FuncFlag>1</FuncFlag></xml>"; if($MsgType=="location"){$url="http://api.map.baidu.com/telematics/v2/weather?location={$w},{$j}&ak=1a3cde429f38434f1811a75e1a90310c";}elseif ($MsgType=="text"){$url="http://api.map.baidu.com/telematics/v2/weather?location={$keyword}&ak=1a3cde429f38434f1811a75e1a90310c";}else{echo "";}$fa=file_get_contents($url);$f=simplexml_load_string($fa);$city=$f->currentCity;$da1=$f->results->result[0]->date;$da2=$f->results->result[1]->date;$da3=$f->results->result[2]->date; $w1=$f->results->result[0]->weather;$w2=$f->results->result[1]->weather;$w3=$f->results->result[2]->weather; $p1=$f->results->result[0]->wind;$p2=$f->results->result[1]->wind;$p3=$f->results->result[2]->wind;$q1=$f->results->result[0]->temperature;$q2=$f->results->result[1]->temperature;$q3=$f->results->result[2]->temperature; $d1=$city.$da1.$w1.$p1.$q1;$d2=$city.$da2.$w2.$p2.$q2;$d3=$city.$da3.$w3.$p3.$q3; $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time,$d1,$d2,$d3);echo $resultStr;}else {echo "";exit;}}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;}} }?>