基于PHP的聚合数据全国天气预报API服务请求的代码样例
本代码示例是基于PHP的聚合数据全国天气预报API服务请求的代码样例，使用前你需要：
①：通过/docs/api/id/39 申请一个天气预报API的appkey
样例代码包含了获取支持城市列表、根据城市获取天气预报、根据IP地址请求天气预报、根据GPS坐标请求天气、城市3小时天气预报的实现。示例代码主要是解析一些常用字段，如需要完整或其他未包含的字段，可以自行参考官方的接口，进行修改。
首先：引入封装好的天气调用类
header('Content-type:text/html;charset=utf-8');include'class.juhe.weather.php';//引入天气请求类//接口基本信息配置$appkey='**********';//您申请的天气查询appkey$weather=newweather($appkey);
一、获取支持的城市列表
由于支持的城市列表基本不会这么变化，大家可以获取到列表后内置到自己的应用中，就不用每次都去请求API。
$citysResult=$weather->getCitys();if($citysResult['error_code']==0){//以下可根据实际业务需求，自行改写$citys=$citysResult['result'];foreach($citysas$ckey=>$c){echo"ID：".$c['id'].",省份：".$c['province'].",城市：".$c['city'].",区域：".$c['district']."<br>";}}else{//以下可根据实际业务需求，自行改写echo$citysResult['error_code'].":".$citysResult['reason'];}
二、根据城市/ID获取天气预报
通过城市的名称或城市的ID来获取天气预报，城市id就是获取城市支持列表中返回的字段ID
$cityWeatherResult=$weather->getWeather('苏州');if($cityWeatherResult['error_code']==0){//以下可根据实际业务需求，自行改写$data=$cityWeatherResult['result'];echo"=======当前天气实况=======<br>";echo "温度：".$data['sk']['temp']."";echo "风向：".$data['sk']['wind_direction']."（".$data['sk']['wind_strength']."）";echo "湿度：".$data['sk']['humidity']."";echo"<br><br>";echo"=======未来几天天气预报=======<br>";foreach($data['future']as$wkey=>$f){echo"日期:".$f['date']."".$f['week']."".$f['weather']."".$f['temperature']."<br>";}echo"<br><br>";echo"=======相关天气指数=======<br>";echo "穿衣指数：".$data['today']['dressing_index'].",".$data['today']['dressing_advice']."<br>";echo "紫外线强度：".$data['today']['uv_index']."<br>";echo "舒适指数：".$data['today']['comfort_index']."<br>";echo "洗车指数：".$data['today']['wash_index'];echo"<br><br>";}else{echo$cityWeatherRe}
三、根据用户的IP地址请求对应的天气预报
通过用户的IP地址获取用户所在地的天气预报，由于IP地址解析可能会有误差，所以有时定位到的城市不一定是用户实际的所在地。
$ipWeatherResult=$weather->getWeatherByIP('58.215.154.128');if($ipWeatherResult['error_code']==0){//以下可根据实际业务需求，自行改写//$data=$ipWeatherResult['result'];echo"=======当前城市=======<br>";echo$data['today']['city'];echo"<br><br>";echo"=======当前天气实况=======<br>";echo "温度：".$data['sk']['temp']."";echo "风向：".$data['sk']['wind_direction']."（".$data['sk']['wind_strength']."）";echo "湿度：".$data['sk']['humidity']."";echo"<br><br>";echo"=======未来几天天气预报=======<br>";foreach($data['future']as$wkey=>$f){echo"日期:".$f['date']."".$f['week']."".$f['weather']."".$f['temperature']."<br>";}echo"<br><br>";echo"=======相关天气指数=======<br>";echo "穿衣指数：".$data['today']['dressing_index'].",".$data['today']['dressing_advice']."<br>";echo "紫外线强度：".$data['today']['uv_index']."<br>";echo "舒适指数：".$data['today']['comfort_index']."<br>";echo "洗车指数：".$data['today']['wash_index'];echo"<br><br>";}else{echo$ipWeatherResult['error_code'].":".$ipWeatherResult['reason'];}
四、根据GPS坐标来获取对应地区的天气
无论通过二、三、四获取的天气预报，因为聚合格式都是统一的，所以解析的流程是一致的，所以没有额外的操作，只是传参上有点的差异。
$geoWeatherResult=$weather->getWeatherByGeo(116.401394,39.916042);if($geoWeatherResult['error_code']==0){//以下可根据实际业务需求，自行改写//$data=$geoWeatherResult['result'];echo"=======当前城市=======<br>";echo$data['today']['city'];echo"<br><br>";echo"=======当前天气实况=======<br>";echo "温度：".$data['sk']['temp']."";echo "风向：".$data['sk']['wind_direction']."（".$data['sk']['wind_strength']."）";echo "湿度：".$data['sk']['humidity']."";echo"<br><br>";echo"=======未来几天天气预报=======<br>";foreach($data['future']as$wkey=>$f){echo"日期:".$f['date']."".$f['week']."".$f['weather']."".$f['temperature']."<br>";}echo"<br><br>";echo"=======相关天气指数=======<br>";echo "穿衣指数：".$data['today']['dressing_index'].",".$data['today']['dressing_advice']."<br>";echo "紫外线强度：".$data['today']['uv_index']."<br>";echo "舒适指数：".$data['today']['comfort_index']."<br>";echo "洗车指数：".$data['today']['wash_index'];echo"<br><br>";}else{echo$geoWeatherResult['error_code'].":".$geoWeatherResult['reason'];}
五、获取城市三小时预报
就是城市每3小时的天气情况
$forecastResult=$weather->getForecast("苏州");if($forecastResult['error_code']==0){//以下可根据实际业务需求，自行改写//$data=$forecastResult['result'];foreach($dataas$key=>$d){echo"日期：".$d['date']."(".$d['sh']."点-".$d['eh']."点)".$d['weather']."".$d['temp1']."~".$d["temp2"]."<br>";}}else{//以下可根据实际业务需求，自行改写//echo$forecastResult['error_code'].":".$forecastResult['reason'];}
通过上面的示例代码，大家应该对如果调用聚合数据天气预报API有了一个大体的了解。
最后放上class.juhe.weather.php完整代码：
<?php//+----------------------------------------------------------------------//|JuhePHP[NOZUONODIE]//+----------------------------------------------------------------------//|Copyright(c)-Allrightsreserved.//+----------------------------------------------------------------------//|Author:Juhedata<info@-->//+----------------------------------------------------------------------//----------------------------------//聚合数据天气预报接口请求类//----------------------------------classweather{private$appkey=false;//申请的聚合天气预报APPKEYprivate$cityUrl='/weather/citys';//城市列表APIURLprivate$weatherUrl='/weather/index';//根据城市请求天气APIURLprivate$weatherIPUrl='/weather/ip';//根据IP地址请求天气APIURLprivate$weatherGeoUrl='/weather/geo';//根据GPS坐标获取天气APIURLprivate$forecast3hUrl='/weather/forecast3h';//获取城市天气3小时预报APIURLpublicfunction__construct($appkey){$this->appkey=$appkey;}/***获取天气预报支持城市列表*@returnarray*/publicfunctiongetCitys(){$params='key='.$this->appkey;$content=$this->juhecurl($this->cityUrl,$params);return$this->_returnArray($content);}/***根据城市名称/ID获取详细天气预报*@paramstring$city[城市名称/ID]*@returnarray*/publicfunctiongetWeather($city){$paramsArray=array('key'=>$this->appkey,'cityname'=>$city,'format'=>2);$params=http_build_query($paramsArray);$content=$this->juhecurl($this->weatherUrl,$params);return$this->_returnArray($content);}/***根据IP地址获取当地天气预报*@paramstring$ip[IP地址]*@returnarray*/publicfunctiongetWeatherByIP($ip){$paramsArray=array('key'=>$this->appkey,'ip'=>$ip,'format'=>2);$params=http_build_query($paramsArray);$content=$this->juhecurl($this->weatherIPUrl,$params);return$this->_returnArray($content);}/***根据GPS坐标获取当地的天气预报*@paramstring$lon[经度]*@paramstring$lat[纬度]*@returnarray*/publicfunctiongetWeatherByGeo($lon,$lat){$paramsArray=array('key'=>$this->appkey,'lon'=>$lon,'lat'=>$lat,'format'=>2);$params=http_build_query($paramsArray);$content=$this->juhecurl($this->weatherGeoUrl,$params);return$this->_returnArray($content);}/***获取城市三小时预报*@paramstring$city[城市名称]*@returnarray*/publicfunctiongetForecast($city){$paramsArray=array('key'=>$this->appkey,'cityname'=>$city,'format'=>2);$params=http_build_query($paramsArray);$content=$this->juhecurl($this->forecast3hUrl,$params);return$this->_returnArray($content);}/***将JSON内容转为数据，并返回*@paramstring$content[内容]*@returnarray*/publicfunction_returnArray($content){returnjson_decode($content,true);}/***请求接口返回内容*@paramstring$url[请求的URL地址]*@paramstring$params[请求的参数]*@paramint$ipost[是否采用POST形式]*@returnstring*/publicfunctionjuhecurl($url,$params=false,$ispost=0){$httpInfo=array();$ch=curl_init();curl_setopt($ch,CURLOPT_HTTP_VERSION,CURL_HTTP_VERSION_1_1);curl_setopt($ch,CURLOPT_USERAGENT,'Mozilla/5.0(WindowsNT10.0;WOW64)AppleWebKit/537.36(KHTML,likeGecko)Chrome/41.0.2272.118Safari/537.36');curl_setopt($ch,CURLOPT_CONNECTTIMEOUT,30);curl_setopt($ch,CURLOPT_TIMEOUT,30);curl_setopt($ch,CURLOPT_RETURNTRANSFER,true);if($ispost){curl_setopt($ch,CURLOPT_POST,true);curl_setopt($ch,CURLOPT_POSTFIELDS,$params);curl_setopt($ch,CURLOPT_URL,$url);}else{if($params){curl_setopt($ch,CURLOPT_URL,$url.'?'.$params);}else{curl_setopt($ch,CURLOPT_URL,$url);}}$response=curl_exec($ch);if($response===FALSE){//echo"cURLError:".curl_error($ch);returnfalse;}$httpCode=curl_getinfo($ch,CURLINFO_HTTP_CODE);$httpInfo=array_merge($httpInfo,curl_getinfo($ch));curl_close($ch);return$response;}}
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