PHP 一次性跳转：使用 Session 控制页面重定向

if (!isset($_SESSION['redirected'])) { $_SESSION['redirected'] = true; $current_url = 'http://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI']; $new_url = 'http://www.host.gay' . $_SERVER['REQUEST_URI']; header('Refresh: 5; URL=$new_url'); echo 'You will be redirected to the new website in 2 seconds...'; exit(); } else { // 已经跳转过，不再跳转 $_SESSION['redirected'] = false; }