how to get the top level domain from an textstring?

hi, i have a list of websites, and i need the first level domain from each url. how can i do this? tried to count the dots or backslashes and then use substr(), but i have all kinds of urls:

http://domain.com
www.domain.com
http://domain.com/folder
http://domain.com/folder/index.php
http://subdomain.domain.com
http://www.domain.com
http://www.domain.co.uk
...

i only need the top level domain (.com, .org, com.au, .co.uk and so on). any ideas...?

 

there is a function in php that does this. i will search and prob in 10 min send you back

 

hmm... sorry, i think i was wrong earlier.
but you can get that with regular expressions. now i'm really very busy but i think that later i can make u a little script that does what you want. good luck

 

At the moment there are two threads with the exact same question posted, ther are some good suggestions in the other thread - http://forums.digitalpoint.com/showthread.php?t=181461

 

The variable you are looking for is captured as follows:

$server = $_SERVER["SERVER_NAME"];

This ignores trailing directories.

Another way to accomplish the same result is:

$domain = "http://www.test.com/test.html";

list($x,$x,$domain,$x) = explode( "/", $domain, 4);

echo $domain, "\n";

PHP:

But, this generates a PHP Notice when the URL has no trailing slash.

 

thanks everyone, have it done now. thougt there was an easier way or a simple function for this, but i had to to it by myself:

	function get_tld($url) {
		$host = parse_url($url);
		$domain = $host['host'];
		$domain = str_replace("__", "", $domain);
		$tail = substr($domain, -7);
		$tld = strstr($tail, ".");
		return $tld;
	}

Code (markup):

i used pharse_url before, so this was a good start. for some reason i got results like "domain.com__" from pharse_url() sometimes, so i had to get rid of the underscores with str_replace. then i take the last 7 chars of this string (because the domain must be within the last 7) and return eveything after the first "." - success!