> I have exchange link business program with other sites,
> basically I give a hyper link to come to our store to them
> and when user click on the link on their site to come to us,
> they will genrate income from it too.
> The question is that how do I know that when a user click on
> the link to come to my site that a user come from the link
> from their site , or from their IP or something. So that I
> can tell where a user come from.
> Is this something to do with http header?
You can look at $HTTP_REFERER, but its not reliable. Better to
tell them to use linking code that specifically has a parameter
in it that your receiving PHP script can pick up.
Instead of http://www.yoursite.com/ give them that with ?linkid=X
so you could track clickthroughs.
Jason
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