check if website has www. in front of domain

[nihilism machine <nihilismmachine@xxxxxxxxx>]

here is my function:

	// Check if site is preceeded by 'WWW'
	public function checkWWW() {
		$myDomain = $_SERVER['SERVER_NAME'];
		$FindWWW = 'wwww.';
		$POS = strpos($myDomain, $FindWWW);
		if ($POS === false) {
			return false;
		} else {
			return true;
		}
	}

any idea why this is not working? just trying to test if the site is www.site.com 
 and not site.com

-------------------------------
Edward H. Hotchkiss
Chief Technical Officer
Durgle, INC
edward@xxxxxxxxxx
http://www.durgle.com
-------------------------------