Getting the Hostname in PHP

[oast]

QuickDraw, kitty_kate:
My submission rules do not permit IP address URLs, so that is not an issue.

QuickDraw:
Thanks for the function. Yes it appears do what I want it to... in that it gets the domain name... but it still has the issue I mentioned in post 7, where it matches similarly named, longer domains.

• 'http://www.greenguysboard.com' is listed in my database.
• Someone comes along and submits the URL 'http://links.guyandjim.com'
• The functions suggested (and the one I was using before) all (falsely) alert the submitter "a site from 'guyandjim.com' has already been added to our lists"

I am going to have to get the domain for each site I already have, update the database with a new 'domain' field, and then do exact matching on that field for future submissions.

[Halfdeck]

function base_domain($url) { // parse out subdomains
		
	$url = parse_url($url);
	$host = $url['host'];
		
	$pattern = "/([\-a-z0-9]*\.)?([\-a-z0-9]*)\.([a-z0-9]*)/i";
	preg_match($pattern, $host, $matches);
	$host = $matches[2] ."." .$matches[3];

	return $host;
}

Gotta be modified for stuff like .co.uk I guess.

[oast]

Originally Posted by Halfdeck

Gotta be modified for stuff like .co.uk I guess.

Yes, Halfdeck. Also does the same as the others that have been mentioned. Thanks anyway.