本文實例講述了PHP調用全國天氣預報數據接口查詢天氣。分享給大家供大家參考，具體如下：
基于PHP的聚合數據全國天氣預報API服務請求的代碼樣例
本代碼示例是基于PHP的聚合數據全國天氣預報API服務請求的代碼樣例，使用前你需要：
①：通過https://www.juhe.cn/docs/api/id/39 申請一個天氣預報API的appkey
樣例代碼包含了獲取支持城市列表、根據城市獲取天氣預報、根據IP地址請求天氣預報、根據GPS坐標請求天氣、城市3小時天氣預報的實現。示例代碼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，可以自行參考官方的接口，進行修改。
首先：引入封裝好的天氣調用類
header('Content-type:text/html;charset=utf-8');include 'class.juhe.weather.php'; //引入天氣請求類//接口基本信息配置$appkey = '**********'; //您申請的天氣查詢appkey$weather = new weather($appkey);一、獲取支持的城市列表
由于支持的城市列表基本不會這么變化，大家可以獲取到列表后內置到自己的應用中，就不用每次都去請求API。
$citysResult = $weather->getCitys();if($citysResult['error_code'] == 0){ //以下可根據實際業務需求，自行改寫 ////////////////////////////////////////////////////////////////////// $citys = $citysResult['result']; foreach($citys as $ckey =>$c){ echo "ID：".$c['id'].",省份：".$c['province'].",城市：".$c['city'].",區域：".$c['district']."<br>"; }}else{ //以下可根據實際業務需求，自行改寫 ////////////////////////////////////////////////////////////////////// echo $citysResult['error_code'].":".$citysResult['reason'];}二、根據城市/ID獲取天氣預報
通過城市的名稱或城市的ID來獲取天氣預報，城市id就是獲取城市支持列表中返回的字段ID
$cityWeatherResult = $weather->getWeather('蘇州');if($cityWeatherResult['error_code'] == 0){ //以下可根據實際業務需求，自行改寫 ////////////////////////////////////////////////////////////////////// $data = $cityWeatherResult['result']; echo "=======當前天氣實況=======<br>"; echo "溫度：".$data['sk']['temp']." "; echo "風向：".$data['sk']['wind_direction']." （".$data['sk']['wind_strength']."）"; echo "濕度：".$data['sk']['humidity']." "; echo "<br><br>"; echo "=======未來幾天天氣預報=======<br>"; foreach($data['future'] as $wkey =>$f){ echo "日期:".$f['date']." ".$f['week']." ".$f['weather']." ".$f['temperature']."<br>"; } echo "<br><br>"; echo "=======相關天氣指數=======<br>"; echo "穿衣指數：".$data['today']['dressing_index']." , ".$data['today']['dressing_advice']."<br>"; echo "紫外線強度：".$data['today']['uv_index']."<br>"; echo "舒適指數：".$data['today']['comfort_index']."<br>"; echo "洗車指數：".$data['today']['wash_index']; echo "<br><br>";}else{ echo $cityWeatherRe}三、根據用戶的IP地址請求對應的天氣預報
通過用戶的IP地址獲取用戶所在地的天氣預報，由于IP地址解析可能會有誤差，所以有時定位到的城市不一定是用戶實際的所在地。
$ipWeatherResult = $weather->getWeatherByIP('58.215.154.128');if($ipWeatherResult['error_code'] == 0){ //以下可根據實際業務需求，自行改寫 ////////////////////////////////////////////////////////////////////// $data = $ipWeatherResult['result']; echo "=======當前城市=======<br>"; echo $data['today']['city']; echo "<br><br>"; echo "=======當前天氣實況=======<br>"; echo "溫度：".$data['sk']['temp']." "; echo "風向：".$data['sk']['wind_direction']." （".$data['sk']['wind_strength']."）"; echo "濕度：".$data['sk']['humidity']." "; echo "<br><br>"; echo "=======未來幾天天氣預報=======<br>"; foreach($data['future'] as $wkey =>$f){ echo "日期:".$f['date']." ".$f['week']." ".$f['weather']." ".$f['temperature']."<br>"; } echo "<br><br>"; echo "=======相關天氣指數=======<br>"; echo "穿衣指數：".$data['today']['dressing_index']." , ".$data['today']['dressing_advice']."<br>"; echo "紫外線強度：".$data['today']['uv_index']."<br>"; echo "舒適指數：".$data['today']['comfort_index']."<br>"; echo "洗車指數：".$data['today']['wash_index']; echo "<br><br>";}else{ echo $ipWeatherResult['error_code'].":".$ipWeatherResult['reason'];}四、根據GPS坐標來獲取對應地區的天氣
無論通過二、三、四獲取的天氣預報，因為聚合格式都是統一的，所以解析的流程是一致的，所以沒有額外的操作，只是傳參上有點的差異。
$geoWeatherResult = $weather->getWeatherByGeo(116.401394,39.916042);if($geoWeatherResult['error_code'] == 0){ //以下可根據實際業務需求，自行改寫 ////////////////////////////////////////////////////////////////////// $data = $geoWeatherResult['result']; echo "=======當前城市=======<br>"; echo $data['today']['city']; echo "<br><br>"; echo "=======當前天氣實況=======<br>"; echo "溫度：".$data['sk']['temp']." "; echo "風向：".$data['sk']['wind_direction']." （".$data['sk']['wind_strength']."）"; echo "濕度：".$data['sk']['humidity']." "; echo "<br><br>"; echo "=======未來幾天天氣預報=======<br>"; foreach($data['future'] as $wkey =>$f){ echo "日期:".$f['date']." ".$f['week']." ".$f['weather']." ".$f['temperature']."<br>"; } echo "<br><br>"; echo "=======相關天氣指數=======<br>"; echo "穿衣指數：".$data['today']['dressing_index']." , ".$data['today']['dressing_advice']."<br>"; echo "紫外線強度：".$data['today']['uv_index']."<br>"; echo "舒適指數：".$data['today']['comfort_index']."<br>"; echo "洗車指數：".$data['today']['wash_index']; echo "<br><br>";}else{ echo $geoWeatherResult['error_code'].":".$geoWeatherResult['reason'];}五、獲取城市三小時預報
就是城市每3小時的天氣情況
$forecastResult = $weather->getForecast("蘇州");if($forecastResult['error_code'] == 0){ //以下可根據實際業務需求，自行改寫 ////////////////////////////////////////////////////////////////////// $data = $forecastResult['result']; foreach($data as $key => $d){ echo "日期：".$d['date']." (".$d['sh']."點-".$d['eh']."點) ".$d['weather']." ".$d['temp1']."~".$d["temp2"]."<br>"; }}else{ //以下可根據實際業務需求，自行改寫 ////////////////////////////////////////////////////////////////////// echo $forecastResult['error_code'].":".$forecastResult['reason'];}通過上面的示例代碼，大家應該對如果調用聚合數據天氣預報API有了一個大體的了解。
最后放上class.juhe.weather.php完整代碼：
<?php// +----------------------------------------------------------------------// | JuhePHP [ NO ZUO NO DIE ]// +----------------------------------------------------------------------// | Copyright (c) 2010-2015 http://juhe.cn All rights reserved.// +----------------------------------------------------------------------// | Author: Juhedata <info@juhe.cn-->// +----------------------------------------------------------------------//----------------------------------// 聚合數據天氣預報接口請求類//----------------------------------class weather{ private $appkey = false; //申請的聚合天氣預報APPKEY private $cityUrl = 'http://v.juhe.cn/weather/citys'; //城市列表API URL private $weatherUrl = 'http://v.juhe.cn/weather/index'; //根據城市請求天氣API URL private $weatherIPUrl = 'http://v.juhe.cn/weather/ip'; //根據IP地址請求天氣API URL private $weatherGeoUrl = 'http://v.juhe.cn/weather/geo'; //根據GPS坐標獲取天氣API URL private $forecast3hUrl = 'http://v.juhe.cn/weather/forecast3h'; //獲取城市天氣3小時預報API URL public function __construct($appkey){ $this->appkey = $appkey; } /** * 獲取天氣預報支持城市列表 * @return array */ public function getCitys(){ $params = 'key='.$this->appkey; $content = $this->juhecurl($this->cityUrl,$params); return $this->_returnArray($content); } /** * 根據城市名稱/ID獲取詳細天氣預報 * @param string $city [城市名稱/ID] * @return array */ public function getWeather($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); } /** * 根據IP地址獲取當地天氣預報 * @param string $ip [IP地址] * @return array */ public function getWeatherByIP($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); } /** * 根據GPS坐標獲取當地的天氣預報 * @param string $lon [經度] * @param string $lat [緯度] * @return array */ public function getWeatherByGeo($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); } /** * 獲取城市三小時預報 * @param string $city [城市名稱] * @return array */ public function getForecast($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); } /** * 將JSON內容轉為數據，并返回 * @param string $content [內容] * @return array */ public function _returnArray($content){ return json_decode($content,true); } /** * 請求接口返回內容 * @param string $url [請求的URL地址] * @param string $params [請求的參數] * @param int $ipost [是否采用POST形式] * @return string */ public function juhecurl($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 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.118 Safari/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 "cURL Error: " . curl_error($ch); return false; } $httpCode = curl_getinfo( $ch , CURLINFO_HTTP_CODE ); $httpInfo = array_merge( $httpInfo , curl_getinfo( $ch ) ); curl_close( $ch ); return $response; }}希望本文所述對大家PHP程序設計有所幫助。
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