php ip白名单

<?php
// 定义白名单
$whitelist = ['192.168.1.1', '10.0.0.1'];

// 获取请求的IP地址
$request_ip = $_SERVER['REMOTE_ADDR'];

// 检查IP是否在白名单中
if (!in_array($request_ip, $whitelist)) {
    header('HTTP/1.0 403 Forbidden');
    echo 'Access Denied';
    exit();
}

// 正常处理请求
echo 'Welcome to the protected area!';
?>

<?php
// 获取真实的客户端IP地址
if (!empty($_SERVER['HTTP_CLIENT_IP'])) {
    $request_ip = $_SERVER['HTTP_CLIENT_IP'];
} elseif (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) {
    $request_ip = $_SERVER['HTTP_X_FORWARDED_FOR'];
} else {
    $request_ip = $_SERVER['REMOTE_ADDR'];
}
?>

<?php
// 从数据库中加载白名单
$whitelist = [];
$conn = new mysqli('localhost', 'username', 'password', 'database');
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}
$sql = "SELECT ip FROM whitelist";
$result = $conn->query($sql);
if ($result->num_rows > 0) {
    while($row = $result->fetch_assoc()) {
        $whitelist[] = $row['ip'];
    }
}
$conn->close();
?>