Comments on: PHP – How to get domain name from URL?

By: Freelance PHP Programmer

Freelance PHP Programmer — Sun, 18 Jul 2010 08:55:08 +0000

This domain extract function helped me for my academic project. Thanx.

By: Madeline Morgan

Madeline Morgan — Wed, 19 May 2010 08:33:56 +0000

What company is the best Domain Registrar? i’ve heard that Godaddy and Moniker are the best.:`:

By: IDENTA

IDENTA — Wed, 28 Apr 2010 06:01:14 +0000

The below function worked very well:

function getDomain($url)
{
if(filter_var($url, FILTER_VALIDATE_URL, FILTER_FLAG_HOST_REQUIRED) === FALSE)
{
return false;
}
/*** get the url parts ***/
$parts = parse_url($url);
/*** return the host domain ***/
return $parts['scheme'].’://’.$parts['host'];
}

By: yudi

yudi — Tue, 23 Jun 2009 18:13:18 +0000

// get host name from URL
preg_match(‘@^(?:http://)?([^/]+)@i’,
“http://www.php.net/index.html”, $matches);
$host = $matches[1];

// get last two segments of host name
preg_match(‘/[^.]+\.[^.]+$/’, $host, $matches);
echo “domain name is: {$matches[0]}\n”;

By: yudi

yudi — Tue, 23 Jun 2009 18:12:41 +0000

The right one

By: Austin

Austin — Thu, 05 Mar 2009 20:19:47 +0000

function getDomain( $inputURL ) {
	
	$arrayURL = explode( '.', $inputURL );
	$i = count( $arrayURL ) - 1;
	
	if( strlen( $arrayURL[ $i ] ) <= 2 && strlen( $arrayURL[ $i - 1 ] ) <= 2 ) {
		
		$cleanURL = $arrayURL[ $i - 2 ] . '.' .$arrayURL[ $i - 1 ] . '.' . $arrayURL[ $i ];
		
		
	} else {
		
		$cleanURL = $arrayURL[ $i - 1 ] . '.' . $arrayURL[ $i ];
		
	}
	
	return $cleanURL;
	
}

Correction on the code.

By: Austin

Austin — Thu, 05 Mar 2009 20:18:59 +0000

Sorry, but neither of these functions really work.

On the first:
You can have subdomains that aren’t ‘www’. If I put in ‘http://sub.gulati.info’, I would expect the return of ‘gulati.info’, but your function gives me ‘sub.gulati.info’.

Here’s a better function:

function getDomain( $inputURL ) {


	$arrayURL = explode( '.', $inputURL );

	$i = count( $arrayURL ) - 1;
	if( strlen( $arrayURL[ $i ] ) 
This will work for everything except CC.CC urls (such as ab.us or something).
On the second:
It gives me a couple of regex errors.

Thanks!