certain refferals

I want to make a small script that will stop anyone that writes in the url to my create_account.php page.

In other words I want it to allow one to enter the page only if they have come from a url that i specify.

Heres the trick, rather than a url i want to allow wild cards. IE

If a link from www.here.com (anywhere on that site) refers to www.create.com/create_account.php they are aloud in. But if somone goes to www.create.com and types in www.create.com/create_account.php, they get an error message or some other way of saying they cant access it.

I don't know if this is possible!!

please help me! Many thanks

Scotte

Ok there is no defiant way of stopping your users with php use

$_SERVER['HTTP_REFERER']

From there you will need to extract any querystrings, filename, directories to get to the domain name. You could try .htaccess as well.