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本文實例講述了PHP調(diào)用全國天氣預報數(shù)據(jù)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(shù)據(jù)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(shù)據(jù)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(jù)城市獲取天氣預報、根據(jù)IP地址請求天氣預報、根據(jù)GPS坐標請求天氣、城市3小時天氣預報的實現(xiàn)。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(diào)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(nèi)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(jù)實際業(yè)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：".$c['city'].",區(qū)域：".$c['district']."br>";
  }
}else{  //以下可根據(jù)實際業(yè)務需求，自行改寫
  //////////////////////////////////////////////////////////////////////
  echo $citysResult['error_code'].":".$citysResult['reason'];
}

二、根據(jù)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(jù)實際業(yè)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(shù)=======br>";
  echo "穿衣指數(shù)：".$data['today']['dressing_index']." , ".$data['today']['dressing_advice']."br>";
  echo "紫外線強度：".$data['today']['uv_index']."br>";
  echo "舒適指數(shù)：".$data['today']['comfort_index']."br>";
  echo "洗車指數(shù)：".$data['today']['wash_index'];
  echo "br>br>";
}else{
  echo $cityWeatherRe
}

三、根據(jù)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(jù)實際業(yè)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(shù)=======br>";
  echo "穿衣指數(shù)：".$data['today']['dressing_index']." , ".$data['today']['dressing_advice']."br>";
  echo "紫外線強度：".$data['today']['uv_index']."br>";
  echo "舒適指數(shù)：".$data['today']['comfort_index']."br>";
  echo "洗車指數(shù)：".$data['today']['wash_index'];
  echo "br>br>";
}else{
  echo $ipWeatherResult['error_code'].":".$ipWeatherResult['reason'];
}

四、根據(jù)GPS坐標來獲取對應地區(qū)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(tǒng)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(jù)實際業(yè)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(shù)=======br>";
  echo "穿衣指數(shù)：".$data['today']['dressing_index']." , ".$data['today']['dressing_advice']."br>";
  echo "紫外線強度：".$data['today']['uv_index']."br>";
  echo "舒適指數(shù)：".$data['today']['comfort_index']."br>";
  echo "洗車指數(shù)：".$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(jù)實際業(yè)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(jù)實際業(yè)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(diào)用聚合數(shù)據(jù)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(shù)據(jù)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(jù)城市請求天氣API URL
  private $weatherIPUrl = 'http://v.juhe.cn/weather/ip'; //根據(jù)IP地址請求天氣API URL
  private $weatherGeoUrl = 'http://v.juhe.cn/weather/geo'; //根據(jù)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(jù)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(jù)IP地址獲取當?shù)靥鞖忸A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(jù)GPS坐標獲取當?shù)氐奶鞖忸A報
   * @param string $lon [經(jīng)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(nèi)容轉為數(shù)據(jù)，并返回
   * @param string $content [內(nèi)容]
   * @return array
   */
  public function _returnArray($content){
    return json_decode($content,true);
  }
  /**
   * 請求接口返回內(nèi)容
   * @param string $url [請求的URL地址]
   * @param string $params [請求的參數(shù)]
   * @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;
  }
}

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