php域名授权演示

<?php
// 定义允许访问的域名白名单
$allowedDomains = ['example.com', 'subdomain.example.com'];

// 获取当前请求的域名
$currentDomain = $_SERVER['HTTP_HOST'];

// 检查当前域名是否在白名单中
if (in_array($currentDomain, $allowedDomains)) {
    echo "Access granted!";
} else {
    echo "Access denied!";
}
?>

<?php
// 定义禁止访问的域名黑名单
$blockedDomains = ['unauthorized.com', 'spamdomain.com'];

// 获取当前请求的域名
$currentDomain = $_SERVER['HTTP_HOST'];

// 检查当前域名是否在黑名单中
if (in_array($currentDomain, $blockedDomains)) {
    echo "Access denied!";
} else {
    echo "Access granted!";
}
?>

<?php
// 定义正则表达式白名单
$allowedPatterns = [
    '/^example\.com$/',
    '/^subdomain\.example\.com$/'
];

// 获取当前请求的域名
$currentDomain = $_SERVER['HTTP_HOST'];

// 检查当前域名是否匹配白名单中的正则表达式
$accessGranted = false;
foreach ($allowedPatterns as $pattern) {
    if (preg_match($pattern, $currentDomain)) {
        $accessGranted = true;
        break;
    }
}

if ($accessGranted) {
    echo "Access granted!";
} else {
    echo "Access denied!";
}
?>