這是來自百度API的一個天氣查詢的接口，支持歷史7天和未來4天的天氣情況查詢，接口不錯，分享給大家。
接口申請地址：http://apistore.baidu.com/apiworks/servicedetail/112.html
首先，獲取一下apikey（貌似需要手機驗證碼認證下）
我調用的是歷史7天和未來4天的接口，接口地址是：
http://apis.baidu.com/apistore/weatherservice/recentweathers
我將這個天氣查詢的功能集成在了微信公眾平台上，支持未來4天天氣查詢，包括：當前溫度、pm值、風向、風力、最高溫度、最低溫度、天氣狀態的查詢，效果如下：
閑話不多說，我就喜歡來點直接的，核心代碼如下：
1 //接收到文本信息
2 private function receiveText($object){
3 //多個空格縮為一個
4 $keyword = $object->Content;
5 $keyword=preg_replace("/\s(?=\s)/","\\1",$keyword);
6 $funcFlag = 0;
7 if(strpos($keyword," ")){
8 //echo '有空格';
9 $arr = explode(" ",$keyword);
10 if($arr[0]=="天氣"){
11 $dateArray = array();
12 $ch = curl_init();
13 $city=urlencode($arr[1]);
14 $url = 'http://apis.baidu.com/apistore/weatherservice/recentweathers?cityname='.$city;
15 $header = array(
16 'apikey: 6512ad3a465e3a9e3d0d1da56639626c',
17 );
18 curl_setopt($ch, CURLOPT_HTTPHEADER , $header);
19 curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
20 curl_setopt($ch , CURLOPT_URL , $url);
21 $res = curl_exec($ch);
22 $data = json_decode($res,true);
23 $cityname=$data['retData']['city'];
24 $citydate=$data['retData']['today']['date'];
25 $cityweek=$data['retData']['today']['week'];
26 $citytemp=$data['retData']['today']['curTemp'];
27 $citypm=$data['retData']['today']['aqi'];
28 $cityhightemp=$data['retData']['today']['hightemp'];
29 $citylowtemp=$data['retData']['today']['lowtemp'];
30 $citytype=$data['retData']['today']['type'];
31 $cityfengli=$data['retData']['today']['fengli'];
32 $cityfengxiang=$data['retData']['today']['fengxiang'];
33 $cityforecast=$data['retData']['forecast'];
34
35 $out="今日溫度：".$citylowtemp."~".$cityhightemp."\n\r"."當前溫度：".$citytemp."\n\r"."天氣情況：".$citytype."\n\r"."PM2.5值：".$citypm."\n\r風向風力：".$cityfengxiang." ".$cityfengli;
36 $dateArray[] = array("Title"=>$cityname."\n\r".$citydate." ".$cityweek,"Description"=>"","Picurl"=>"","Url" =>"");
37 $dateArray[] = array("Title"=>$out,"Description"=>"","Picurl"=>"","Url" =>"");
38 for($i=0;$i<count($cityforecast);$i++){
39 $outstr="☀ ".$cityforecast[$i]["date"]." ".$cityforecast[$i]["week"]."\n\r氣溫：".$cityforecast[$i]["lowtemp"]."~".$cityforecast[$i]["hightemp"]."\n\r風力：".$cityforecast[$i]["fengxiang"]." ".$cityforecast[$i]["fengli"]."\n\r天氣：".$cityforecast[$i]["type"];
40 $dateArray[] = array("Title"=>$outstr,"Description"=>"","Picurl"=>"","Url" =>"");
41 }
42 $resultStr = $this->transmitNews($object, $dateArray, $funcFlag);
43 }
44 }else{
45 //echo '沒有空格';
46 if($keyword=="天氣"){
47 $dateArray = array();
48 $dateArray[] = array("Title"=>"查詢格式錯誤","Description"=>"","Picurl"=>"","Url" =>"");
49 $dateArray[] = array("Title"=>"正確格式例：天氣 北京","Description"=>"","Picurl"=>"","Url" =>"");
50 $resultStr = $this->transmitNews($object, $dateArray, $funcFlag);
51 }
52 }
53 return $resultStr;
54 }
查詢格式：“天氣 城市名”