php 屏蔽中国ip

<?php
// 中国 IP 地址段列表
$china_ip_ranges = [
    '1.0.0.0/8',
    '14.0.0.0/8',
    '27.0.0.0/8',
    '28.0.0.0/8',
    '29.0.0.0/8',
    '30.0.0.0/8',
    '31.0.0.0/8',
    '32.0.0.0/8',
    '33.0.0.0/8',
    '34.0.0.0/8',
    '35.0.0.0/8',
    '36.0.0.0/8',
    '37.0.0.0/8',
    '38.0.0.0/8',
    '39.0.0.0/8',
    '41.0.0.0/8',
    '42.0.0.0/8',
    '43.0.0.0/8',
    '44.0.0.0/8',
    '45.0.0.0/8',
    '46.0.0.0/8',
    '47.0.0.0/8',
    '48.0.0.0/8',
    '49.0.0.0/8',
    '50.0.0.0/8',
    '51.0.0.0/8',
    '52.0.0.0/8',
    '53.0.0.0/8',
    '54.0.0.0/8',
    '55.0.0.0/8',
    '56.0.0.0/8',
    '57.0.0.0/8',
    '58.0.0.0/8',
    '59.0.0.0/8',
    '60.0.0.0/8',
    '61.0.0.0/8',
    '62.0.0.0/8',
    '63.0.0.0/8',
    '64.0.0.0/8',
    '65.0.0.0/8',
    '66.0.0.0/8',
    '67.0.0.0/8',
    '68.0.0.0/8',
    '69.0.0.0/8',
    '70.0.0.0/8',
    '71.0.0.0/8',
    '72.0.0.0/8',
    '73.0.0.0/8',
    '74.0.0.0/8',
    '75.0.0.0/8',
    '76.0.0.0/8',
    '77.0.0.0/8',
    '78.0.0.0/8',
    '79.0.0.0/8',
    '80.0.0.0/8',
    '81.0.0.0/8',
    '82.0.0.0/8',
    '83.0.0.0/8',
    '84.0.0.0/8',
    '85.0.0.0/8',
    '86.0.0.0/8',
    '87.0.0.0/8',
    '88.0.0.0/8',
    '89.0.0.0/8',
    '90.0.0.0/8',
    '91.0.0.0/8',
    '92.0.0.0/8',
    '93.0.0.0/8',
    '94.0.0.0/8',
    '95.0.0.0/8',
    '96.0.0.0/8',
    '97.0.0.0/8',
    '98.0.0.0/8',
    '99.0.0.0/8',
    '100.0.0.0/8',
    '101.0.0.0/8',
    '102.0.0.0/8',
    '103.0.0.0/8',
    '104.0.0.0/8',
    '105.0.0.0/8',
    '106.0.0.0/8',
    '107.0.0.0/8',
    '108.0.0.0/8',
    '109.0.0.0/8',
    '110.0.0.0/8',
    '111.0.0.0/8',
    '112.0.0.0/8',
    '113.0.0.0/8',
    '114.0.0.0/8',
    '115.0.0.0/8',
    '116.0.0.0/8',
    '117.0.0.0/8',
    '118.0.0.0/8',
    '119.0.0.0/8',
    '120.0.0.0/8',
    '121.0.0.0/8',
    '122.0.0.0/8',
    '123.0.0.0/8',
    '124.0.0.0/8',
    '125.0.0.0/8',
    '126.0.0.0/8',
    '127.0.0.0/8',
];

// 获取客户端 IP 地址
$client_ip = $_SERVER['REMOTE_ADDR'];

// 检查 IP 是否在中国 IP 地址段内
$in_china = false;
foreach ($china_ip_ranges as $range) {
    if (ip_in_range($client_ip, $range)) {
        $in_china = true;
        break;
    }
}

// 如果 IP 在中国 IP 地址段内，拒绝访问
if ($in_china) {
    header('HTTP/1.1 403 Forbidden');
    echo 'Access Denied';
    exit();
}

// 继续处理请求
echo 'Welcome to our website!';

// 辅助函数：检查 IP 是否在指定范围内
function ip_in_range($ip, $range) {
    $ip = ip2long($ip);
    list($subnet, $mask) = explode('/', $range);
    $subnet = ip2long($subnet);
    $mask = ~((1 << (32 - $mask)) - 1);
    return (($ip & $mask) == ($subnet & $mask));
}
?>