微信开发-天气预报功能

本文实例为大家分享了php微信百度天气预报的开发代码，供大家参考，具体内容如下

1.登录百度ak申请：http://www.php.cn/

Weather.php

<?php   /**    * 使用百度天气预报接口获取城市天气信息案例实现    */       //获取城市天气信息    function getWeatherInfo($cityName){     if($cityName == "" || (strstr($cityName,"+"))){      return "发送城市加天气,例如北京天气";     }     //获取到的ak     $ak = your ak;     //获取到的sk     $sk = your sk;     //调用接口     $url = 'http://api.map.baidu.com/telematics/v3/weather?ak=%s&location=%s&output=%s&sk=%s';     $uri = '/telematics/v3/weather';        $location = $cityName;     $output = 'json';     $querystring_arrays = array(      'ak' => $ak,      'location' => $location,      'output' => $output     );        $querystring = http_build_query($querystring_arrays);     //生成sn     $sn = md5(urlencode($uri.'?'.$querystring.$sk));     $targetUrl = sprintf($url,$ak,urlencode($location),$output,$sn);        $ch = curl_init();     curl_setopt($ch,CURLOPT_URL,$targetUrl);     curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);     $result = curl_exec($ch);     curl_close($ch);     $result = json_decode($result,true);        if($result["error"]!=0){      return $result["status"];     }        $curHour = (int)date('H',time());     $weather = $result["results"][0];     $weatherArray[]=array("Title"=>$weather['currentCity']."天气预报","Description"=>"","PicUrl"=>"","Url"=>"");     for($i = 0;$i<count($weather["weather_data"]);$i++){      $weatherArray[] = array("Title"=>       $weather["weather_data"][$i]["data"]."\n".       $weather["weather_data"][$i]["weather"].       $weather["weather_data"][$i]["wind"].       $weather["weather_data"][$i]["temperature"],       "Description"=>"",       "PicUrl"=>(($curHour>=6)&&($curHour<       18))?$weather["weather_data"][$i]["dayPictureUrl"]:$weather["weather_data"][$i]["nightPictureUrl"],"URL"=>""      );     }     return $weatherArray;    }

3.实现天气消息事件

<?php   /*    CopyRight 2016 All Rights Reserved   */      define("TOKEN", "weixin");   /**    * 百度天气预报案例实现    * 实现思路：    * 1.申请ak、sk    * 2.使用天气预报接口    * 3.实现天气信息功能    * 4.实现事件响应功能    */   $wechatObj = new wechatCallbackapiTest();   if (!isset($_GET['echostr'])) {    $wechatObj->responseMsg();   }else{    $wechatObj->valid();   }      class wechatCallbackapiTest   {    //验证签名    public function valid()    {     $echoStr = $_GET["echostr"];     if($this->checkSignature()){      header('content-type:text');      echo $echoStr;      exit;     }    }       public 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;     }    }       //响应消息    public function responseMsg()    {     $postStr = $GLOBALS["HTTP_RAW_POST_DATA"];     if (!empty($postStr)){      $this->logger("R ".$postStr);      $postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);      $RX_TYPE = trim($postObj->MsgType);         //消息类型分离      switch ($RX_TYPE)      {       case "event":        $result = $this->receiveEvent($postObj);        break;       case "text":        $result = $this->receiveText($postObj);        break;       default:        $result = "unknown msg type: ".$RX_TYPE;        break;      }      echo $result;     }else {      echo "";      exit;     }    }       //接收事件消息    public function receiveEvent($object)    {     $content = "";     switch ($object->Event)     {      case "subscribe":       $content = "欢迎关注Nicky的公众号 ";       $content .= (!empty($object->EventKey))?("\n来自二维码场景 ".str_replace("qrscene_","",$object->EventKey)):"";       break;      case "unsubscribe":       $content = "取消关注";       break;     }     $result = $this->transmitText($object, $content);     return $result;    }       //接收文本消息    public function receiveText($object)    {     $keyword = trim($object->Content);        //自动回复模式        if (strstr($keyword, "天气")){      $city = str_replace('天气','',$keyword);      include("weather.php");      $content = getWeatherInfo($city);     }     $result = $this->transmitNews($object, $content);     return $result;    }       //回复图文消息    public function transmitNews($object, $newsArray)    {     if(!is_array($newsArray)){      return;     }     $itemTpl = " <item>     <Title><![CDATA[%s]]></Title>     <Description><![CDATA[%s]]></Description>     <PicUrl><![CDATA[%s]]></PicUrl>     <Url><![CDATA[%s]]></Url>    </item>   ";     $item_str = "";     foreach ($newsArray as $item){      $item_str .= sprintf($itemTpl, $item['Title'], $item['Description'], $item['PicUrl'], $item['Url']);     }     $xmlTpl = "<xml>   <ToUserName><![CDATA[%s]]></ToUserName>   <FromUserName><![CDATA[%s]]></FromUserName>   <CreateTime>%s</CreateTime>   <MsgType><![CDATA[news]]></MsgType>   <ArticleCount>%s</ArticleCount>   <Articles>   $item_str</Articles>   </xml>";        $result = sprintf($xmlTpl, $object->FromUserName, $object->ToUserName, time(), count($newsArray));     return $result;    }          //日志记录    public function logger($log_content)    {     if(isset($_SERVER['HTTP_APPNAME'])){ //SAE      sae_set_display_errors(false);      sae_debug($log_content);      sae_set_display_errors(true);     }else if($_SERVER['REMOTE_ADDR'] != "127.0.0.1"){ //LOCAL      $max_size = 10000;      $log_filename = "log.xml";      if(file_exists($log_filename) and (abs(filesize($log_filename)) > $max_size)){unlink($log_filename);}      file_put_contents($log_filename, date('H:i:s')." ".$log_content."\r\n", FILE_APPEND);     }    }      }   ?>

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