Restict page view based on incoming URL

Hi, I am creating a competition page for website, the client wishes this page to only be viewable based on the link that the affiliate website would place on their website....Now the way I see this could happen is if I store the affiliate website in my database that contents the competition details. Now my question...how can I do a check based on URL that was the address that took the customer to my page?

Chris

the incoming links should contain an affiliate ID as a URL variable:

yourpage.php?afid=1234

or:
yourpage.php?afid=5678


you can then create an if statement that compares the URL Variable
<?php
if(isset($_GET['afid']) {
if($_GET['afid'] == "1234") {
<do something here>
} eleseif($_GET['afid'] == "5678") {
<do something else here
}
}
?>

Hey Jason, thanks for that, one question though I would also like to include in the IF condition for the incoming domain name.

for example lets say I create a competition page with the competition id (so that I can create multiple competitions for different websites that are all separate)

example lets say I create w competition for webassist.

I would then provide webassist a link www.mydomain.com/Competition.php?CompetitionID=1

WebAssist would then put this link up on their website somewhere so theu users can then click on the link and enter the competition....
..HOWEVER...lets say Adobe.com find this link on WebAssist website and then copy the link and place it on their website...I don't want this allowed...so the only way is to do an IF condition based on the incoming URL so that I make sure that for that particular competitionID that it checks for the webassist domain and accepts any visitors incoming from that domain.

Chris

i believe you can get the incoming domain name using:

$_SERVER["HTTP_REFERER"]