url redirect

[theo]

Is there a way of obtaining the url of the previous page?

I want to direct people that have gone through Paypal to a page but I want to ensure people don't type in the url and go directly to that page without going through Paypal, I want these people to be directed to a different page.

[mmilano]

<?
if( strstr( $_SERVER['HTTP_REFERER'],"paypal.com") )
{
  header("location: path-for-paypal-people.php");
}
?>

[theo]

Great thanks!