php微信开发之百度天气预报

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：

2.实现天气信息功能

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 = '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['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("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['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); 
  } 
 } 
 
} 
?> 

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。