php获取来路域名跳转

if (isset($_SERVER['HTTP_REFERER'])) {
    $referer = $_SERVER['HTTP_REFERER'];
    // 处理referer
} else {
    // 处理没有referer的情况
}

$referer = $_SERVER['HTTP_REFERER'];
$host = parse_url($referer, PHP_URL_HOST);
if (filter_var($host, FILTER_VALIDATE_IP)) {
    // 处理IP地址
} else {
    // 处理域名
}

header('Location: http://example.com/new-page.php');
exit();

<?php
// 获取来路域名
if (isset($_SERVER['HTTP_REFERER'])) {
    $referer = $_SERVER['HTTP_REFERER'];
    $host = parse_url($referer, PHP_URL_HOST);
    
    // 验证域名是否合法
    if (filter_var($host, FILTER_VALIDATE_DOMAIN)) {
        echo "来路域名: " . $host;
        
        // 根据来路域名进行跳转
        if ($host == 'www.example.com') {
            header('Location: http://example.com/home.php');
        } else {
            header('Location: http://example.com/default.php');
        }
        exit();
    } else {
        echo "无效的来路域名";
    }
} else {
    echo "没有来路域名";
}
?>