Thank you all for the responses so far. I've been reading up
on http_referer and I'm starting to think it's too unreliable
(i.e., often blocked/blank) for my purposes. Is there any other way
I can make sure that the users trying to access my website are only
coming from a specific page? For example, in the link to my website
in the "source" website, I could have a URL variable, which I would
check to make sure it existed on my side before allowing the users
to access the website. But that seems too flimsy since any user
could look at the bottom of the screen when hovering over the link
to get the url and url variable. After that, the user would no
longer need to go through the first page/site but would simply have
to type in the URL with the URL variable. Is there any way to mask
the passing of a URL variable? Any other suggestions?
Thanks again