Checkin referrer?

Is it possible to check the referrer against say an array?

so if the array was:

$parnters = array("http://www.yahoo.com","http://www.google.com);

Would it be possible so that if they did equal then it would set $partner_code = "yes" ?

Thanks a lot

Ben

If you are using PHP4:

if (in_array($HTTP_REFERER, $partners){
$partner_code = "yes";
}

If you are using <PHP4:

for (reset($parnters); list($key, $value) = current($partners); next($partners)) {
if ($value == $HTTP_REFERER) {
$partner_code = "yes";
}
}