一、接口申请

二、通过PHP发起城市天气查询

/**

* 聚合全国天气预报API发起请求-PHP代码

* 功能：全国3000多个省市的实时天气预报，未来7天、常用生活指数等

*/

// 请求的接口URL

$apiUrl = 'http://v.juhe.cn/weather/index';

// 请求参数

$params = [

'cityname' => '北京', // 要查询的城市

'format' => '2',

'key' => 'xxxxxx' // 您申请到的接口请求key

];

$paramsString = http_build_query($params);

// 发起接口网络请求

$response = juheHttpRequest($apiUrl, $paramsString);

$result = json_decode($response, true);

if ($result) {

$errorCode = $result['error_code'];

if ($errorCode == 0) {

// 获取返回的天气相关信息，具体根据业务实际逻辑调整修改

$data = $result['result'];

// 打印当前实况天气信息,更多字段请参考官方接口文档

echo "当前城市：{$data["today"]["city"]}".PHP_EOL;

echo "当前温度：{$data["sk"]["temp"]}".PHP_EOL;

echo "当前湿度：{$data["sk"]["humidity"]}".PHP_EOL;

echo "当前天气：{$data["today"]["weather"]}".PHP_EOL;

echo "当前风向：{$data["sk"]["wind_direction"]}".PHP_EOL;

echo "当前风力：{$data["sk"]["wind_strength"]}".PHP_EOL;

} else {

// 请求异常

echo "请求异常:{$errorCode}_{$result["reason"]}".PHP_EOL;

}

} else {

// 可能网络异常等问题，无法正常获得相应内容，业务逻辑可自行修改

echo "请求异常".PHP_EOL;

}

/**

* 发起网络请求函数

* @param $url 请求的URL

* @param bool $params 请求的参数内容

* @param int $ispost 是否POST请求

* @return bool|string 返回内容

*/

function juheHttpRequest($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, 3);

curl_setopt($ch, CURLOPT_TIMEOUT, 12);

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;

}