PHP调用全国天气预报数据接口查询天气示例

PHP调用全国天气预报数据接口查询天气。具体如下：

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https://www.juhe.cn/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  $weather = new weather($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 = $citysResult['result'];    foreach($citys as $ckey =>$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 = $forecastResult['result'];    foreach($data as $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 [ NO ZUO NO DIE ]  // +----------------------------------------------------------------------  // | Copyright (c) 2010-2015 http://juhe.cn All rights reserved.  // +----------------------------------------------------------------------  // | Author: Juhedata <info@juhe.cn-->  // +----------------------------------------------------------------------  //----------------------------------  // 聚合数据天气预报接口请求类  //----------------------------------  class weather{    private $appkey = false; //申请的聚合天气预报APPKEY    private $cityUrl = 'http://v.juhe.cn/weather/citys'; //城市列表API URL    private $weatherUrl = 'http://v.juhe.cn/weather/index'; //根据城市请求天气API URL    private $weatherIPUrl = 'http://v.juhe.cn/weather/ip'; //根据IP地址请求天气API URL    private $weatherGeoUrl = 'http://v.juhe.cn/weather/geo'; //根据GPS坐标获取天气API URL    private $forecast3hUrl = 'http://v.juhe.cn/weather/forecast3h'; //获取城市天气3小时预报API URL    public function __construct($appkey){      $this->appkey = $appkey;    }    /**     * 获取天气预报支持城市列表     * @return array     */    public function getCitys(){      $params = 'key='.$this->appkey;      $content = $this->juhecurl($this->cityUrl,$params);      return $this->_returnArray($content);    }    /**     * 根据城市名称/ID获取详细天气预报     * @param string $city [城市名称/ID]     * @return array     */    public function getWeather($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);    }    /**     * 根据IP地址获取当地天气预报     * @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);    }    /**     * 根据GPS坐标获取当地的天气预报     * @param string $lon [经度]     * @param string $lat [纬度]     * @return array     */    public function getWeatherByGeo($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);    }    /**     * 获取城市三小时预报     * @param string $city [城市名称]     * @return array     */    public function getForecast($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);    }    /**     * 将JSON内容转为数据，并返回     * @param string $content [内容]     * @return array     */    public function _returnArray($content){      return json_decode($content,true);    }    /**     * 请求接口返回内容     * @param string $url [请求的URL地址]     * @param string $params [请求的参数]     * @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;    }  }