怎麼使用PHP查詢IP地址歸屬地

// 介面請求Key，可以通過https://www.juhe.cn/docs/api/id/1免費申請開通
$appkey = "*********************";

//根據查詢的IP地址，查詢該IP所屬的區域
$url = "http://apis.juhe.cn/ip/ipNew";
$params = [
    "ip" => "112.112.11.11",//需要查詢的IP地址或域名
    "key" => $appkey,//應用APPKEY(應用詳細頁查詢)
];
$paramstring = http_build_query($params);
$content = juheHttpRequest($url, $paramstring, 1);
$result = json_decode($content, true);
if ($result) {
    if ($result['error_code'] == 0) {
        echo "國家：{$result['result']['Country']}" . PHP_EOL;
        echo "省份：{$result['result']['Province']}" . PHP_EOL;
        echo "城市：{$result['result']['City']}" . PHP_EOL;
        echo "運營商：{$result['result']['Isp']}" . PHP_EOL;
    } else {
        echo "{$result['error_code']}:{$result['reason']}" . PHP_EOL;
    }
} else {
    echo "請求失敗";
}

/**
 * 請求介面返回內容
 * @param string $url [請求的URL地址]
 * @param string $params [請求的引數]
 * @param int $ipost [是否採用POST形式]
 * @return  string
 */
function juheHttpRequest($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, 'JuheData');
    curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 3);
    curl_setopt($ch, CURLOPT_TIMEOUT, 5);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 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;
}