本文实例讲述了PHP调用全国天气预报数据接口查询天气。分享给大家供大家参考，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：

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']."
";

}

}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=======
";

echo "温度：".$data['sk']['temp']." ";

echo "风向：".$data['sk']['wind_direction']." (".$data['sk']['wind_strength'].")";

echo "湿度：".$data['sk']['humidity']." ";

echo "
";

echo "=======未来几天天气预报=======
";

foreach($data['future'] as $wkey =>$f){

echo "日期:".$f['date']." ".$f['week']." ".$f['weather']." ".$f['temperature']."
";

}

echo "
";

echo "=======相关天气指数=======
";

echo "穿衣指数：".$data['today']['dressing_index']." , ".$data['today']['dressing_advice']."
";

echo "紫外线强度：".$data['today']['uv_index']."
";

echo "舒适指数：".$data['today']['comfort_index']."
";

echo "洗车指数：".$data['today']['wash_index'];

echo "
";

}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=======
";

echo $data['today']['city'];

echo "
";

echo "=======当前天气实况=======
";

echo "温度：".$data['sk']['temp']." ";

echo "风向：".$data['sk']['wind_direction']." (".$data['sk']['wind_strength'].")";

echo "湿度：".$data['sk']['humidity']." ";

echo "
";

echo "=======未来几天天气预报=======
";

foreach($data['future'] as $wkey =>$f){

echo "日期:".$f['date']." ".$f['week']." ".$f['weather']." ".$f['temperature']."
";

}

echo "
";

echo "=======相关天气指数=======
";

echo "穿衣指数：".$data['today']['dressing_index']." , ".$data['today']['dressing_advice']."
";

echo "紫外线强度：".$data['today']['uv_index']."
";

echo "舒适指数：".$data['today']['comfort_index']."
";

echo "洗车指数：".$data['today']['wash_index'];

echo "
";

}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=======
";

echo $data['today']['city'];

echo "
";

echo "=======当前天气实况=======
";

echo "温度：".$data['sk']['temp']." ";

echo "风向：".$data['sk']['wind_direction']." (".$data['sk']['wind_strength'].")";

echo "湿度：".$data['sk']['humidity']." ";

echo "
";

echo "=======未来几天天气预报=======
";

foreach($data['future'] as $wkey =>$f){

echo "日期:".$f['date']." ".$f['week']." ".$f['weather']." ".$f['temperature']."
";

}

echo "
";

echo "=======相关天气指数=======
";

echo "穿衣指数：".$data['today']['dressing_index']." , ".$data['today']['dressing_advice']."
";

echo "紫外线强度：".$data['today']['uv_index']."
";

echo "舒适指数：".$data['today']['comfort_index']."
";

echo "洗车指数：".$data['today']['wash_index'];

echo "
";

}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"]."
";

}

}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：

// +----------------------------------------------------------------------

// | JuhePHP [ NO ZUO NO DIE ]

// +----------------------------------------------------------------------

// | Copyright (c) 2010-2015 http://juhe.cn All rights reserved.

// +----------------------------------------------------------------------

// | Author: Juhedata

// +----------------------------------------------------------------------

//----------------------------------

// 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;

}

}

希望本文所述对大家PHP程序设计有所帮助。