Grab domain of referer?

Hey,

I'm trying to make a script load based on the domain name of the referer of the document, if any.

I already have this in place, which also works:

if (stristr($_SERVER["HTTP_REFERER"],"right-domain")) {run script} else {blocked}

But I feel it is insecure, as anyone could simply have "http://wrong-domain/right-domain/stuff/", and gain access to the script.

So my question, is there a way to only grab the domain of the referer without depending on the whole variable?

Thanks in advance. 🙂

$data = parse_url($_SERVER['HTTP_REFERER']);
if($data['host'] == 'right_domain')
{
     // do this
}

Thanks much! 😃

You're welcome!