PHP implements Baidu weather forecast for WeChat development

This article mainly introduces the relevant information of Baidu weather forecast developed by PHP WeChat in detail. It has certain reference value. Interested friends can refer to it

1. Log in Baidu ak application: http://lbsyun.baidu.com/apiconsole/key

2. Implement weather information function

baiduWeather.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 = &#39;http://api.map.baidu.com/telematics/v3/weather?ak=%s&location=%s&output=%s&sk=%s&#39;; 
  $uri = &#39;/telematics/v3/weather&#39;; 
 
  $location = $cityName; 
  $output = &#39;json&#39;; 
  $querystring_arrays = array( 
   &#39;ak&#39; => $ak, 
   &#39;location&#39; => $location, 
   &#39;output&#39; => $output 
  ); 
 
  $querystring = http_build_query($querystring_arrays); 
  //生成sn 
  $sn = md5(urlencode($uri.&#39;?&#39;.$querystring.$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(&#39;H&#39;,time()); 
  $weather = $result["results"][0]; 
  $weatherArray[]=array("Title"=>$weather[&#39;currentCity&#39;]."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. Implement weather message events

<?php 
/* 
 CopyRight 2016 All Rights Reserved 
*/ 
 
define("TOKEN", "weixin"); 
/** 
 * 百度天气预报案例实现 
 * 实现思路： 
 * 1.申请百度ak、sk 
 * 2.使用百度天气预报接口 
 * 3.实现天气信息功能 
 * 4.实现事件响应功能 
 */ 
$wechatObj = new wechatCallbackapiTest(); 
if (!isset($_GET[&#39;echostr&#39;])) { 
 $wechatObj->responseMsg(); 
}else{ 
 $wechatObj->valid(); 
} 
 
class wechatCallbackapiTest 
{ 
 //验证签名 
 public function valid() 
 { 
  $echoStr = $_GET["echostr"]; 
  if($this->checkSignature()){ 
   header(&#39;content-type:text&#39;); 
   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, &#39;SimpleXMLElement&#39;, 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")){ 
   $city = str_replace(&#39;天气&#39;,&#39;&#39;,$keyword); 
   include("baiduweather.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[&#39;Title&#39;], $item[&#39;Description&#39;], $item[&#39;PicUrl&#39;], $item[&#39;Url&#39;]); 
  } 
  $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[&#39;HTTP_APPNAME&#39;])){ //SAE 
   sae_set_display_errors(false); 
   sae_debug($log_content); 
   sae_set_display_errors(true); 
  }else if($_SERVER[&#39;REMOTE_ADDR&#39;] != "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($log_filename, date(&#39;H:i:s&#39;)." ".$log_content."\r\n", FILE_APPEND); 
  } 
 } 
 
} 
?>

The above is the entire content of this article, I hope it will be helpful to everyone's study.

Related recommendations:

How to implement proportional scaling and logo watermark functions of images in PHP

PHP implements the method of calling Mailgun to send emails

PHP jQuery implements the scrolling method of dynamically loading data without refreshing

The above is the detailed content of PHP implements Baidu weather forecast for WeChat development. For more information, please follow other related articles on the PHP Chinese website!