|
This is an interesting question.
With the first example if $_SERVER['HTTP_REFERER'] doesn't evaluate to whatever php thinks of as false it won't work. If you tested for a specific refererrer it might however. One way to do this where there may be many possible "right" answers would be to use a regular expression:
if (!preg_match('#^http:/+mydomain.com#',$_SERVER['HTTP_REFERER'])) die("can't view this link directly!");
I'm wondering if apache config could be doctored in some way to prevent this eg using mod_rewrite.
|