如何用PHP调用API获取空气质量数据_PHP空气质量API调用与环境数据解析教程

$lat = 39.9042; // 北京纬度
$lon = 116.4074; // 北京经度
$apiKey = 'your_api_key_here';

$url = "http://api.openweathermap.org/data/2.5/air_pollution?lat={$lat}&lon={$lon}&appid={$apiKey}";

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_TIMEOUT, 10);
curl_setopt($ch, CURLOPT_USERAGENT, 'AirQuality App v1.0');

$response = curl_exec($ch);

if (curl_error($ch)) {
    die('请求失败: ' . curl_error($ch));
}

curl_close($ch);

$data = json_decode($response, true);

if (isset($data['list']) && count($data['list']) > 0) {
    $air = $data['list'][0];
    
    echo "AQI: " . $air['main']['aqi'] . "\n";
    echo "PM2.5: " . $air['components']['pm2_5'] . " µg/m³\n";
    echo "PM10: " . $air['components']['pm10'] . " µg/m³\n";
    echo "臭氧(O3): " . $air['components']['o3'] . " µg/m³\n";
    echo "一氧化碳(CO): " . $air['components']['co'] . " µg/m³\n";
} else {
    echo "未获取到空气质量数据。\n";
}

$httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
if ($httpCode !== 200) {
    error_log("API请求异常，状态码：{$httpCode}");
}