php程序实现301重定向

< ?php
$the_host = $_SERVER['HTTP_HOST'];
$the_url = isset($_SERVER['REQUEST_URI']) ? $_SERVER['REQUEST_URI'] : '';
$the_url = strtolower($the_url);
if($the_url=="/index.php")
{
header('HTTP/1.1 301 Moved Permanently');
header('Location:http://www.yonghappy.com');
}
if($the_url !=="/index.php")
{
header('HTTP/1.1 301 Moved Permanently');
header('Location:http://www.yonghappy.com'.$the_url);
}
?>

将其中的域名换成自己的就可以了，这段代码应该可以在所有支持PHP的空间完美运行