基于PHP的免费天气预报接口查询

1、开通接口

天气预报接口服务使用的聚合数据提供的免费接口，每天可以100次免费调用。可以通过https://www.juhe.cn/docs/api/id/73注册及开通。

2、通过PHP发起城市天气查询

<?php
// 请求的接口URL
$apiUrl = 'http://apis.juhe.cn/simpleWeather/query';
// 请求参数
$params = [
    'city' => '苏州', // 要查询的城市
    'key' => '您申请的接口调用Key'
];
$paramsString = http_build_query($params);

// 发起接口网络请求
$response = juheHttpRequest($apiUrl, $paramsString , 1);
$result = json_decode($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
        echo "当前城市：{$data["city"]}".PHP_EOL;
        echo "当前温度：{$data["realtime"]["temperature"]}".PHP_EOL;
        echo "当前湿度：{$data["realtime"]["humidity"]}".PHP_EOL;
        echo "当前天气：{$data["realtime"]["info"]}".PHP_EOL;
        echo "当前风向：{$data["realtime"]["direct"]}".PHP_EOL;
        echo "当前风力：{$data["realtime"]["power"]}".PHP_EOL;
        echo "当前空气质量：{$data["realtime"]["aqi"]}".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;
}


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;
}

3、通过PHP发起生活指数查询

// 请求的接口URL
$apiUrl = 'http://apis.juhe.cn/simpleWeather/life';
// 请求参数
$params = [
    'city' => '苏州', // 要查询的城市
    'key' => '您申请的接口调用Key'
];
$paramsString = http_build_query($params);

// 发起接口网络请求
$response = juheHttpRequest($apiUrl, $paramsString , 1);
$result = json_decode($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']['life'];

        // 打印当前实况天气信息
        echo "空调指数：{$data['kongtiao']['v']}，{$data['kongtiao']['des']}".PHP_EOL;
        echo "过敏指数：{$data['guomin']['v']}，{$data['guomin']['des']}".PHP_EOL;
        echo "舒适度指数：{$data['shushidu']['v']}，{$data['shushidu']['des']}".PHP_EOL;
        echo "穿衣指数：{$data['chuanyi']['v']}，{$data['chuanyi']['des']}".PHP_EOL;
        echo "钓鱼指数：{$data['diaoyu']['v']}，{$data['diaoyu']['des']}".PHP_EOL;
        echo "感冒指数：{$data['ganmao']['v']}，{$data['ganmao']['des']}".PHP_EOL;
        echo "紫外线指数：{$data['ziwaixian']['v']}，{$data['ziwaixian']['des']}".PHP_EOL;
        echo "洗车指数：{$data['xiche']['v']}，{$data['xiche']['des']}".PHP_EOL;
        echo "运动指数：{$data['yundong']['v']}，{$data['yundong']['des']}".PHP_EOL;
        echo "带伞指数：{$data['daisan']['v']}，{$data['daisan']['des']}".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;
}