how to call a class properly

How would i call the following class??

class vBulletinUser{
	public static function login($username, $remember_me = false){
		require_once(DIR . '/includes/functions_login.php');
		global $vbulletin,$vbphrase;
		$remember_me = $remember_me ? true : false;	//force to true or false value
		$vbulletin->userinfo = $vbulletin->db->query_first("SELECT userid, usergroupid, membergroupids, infractiongroupids, 
			username, password, salt FROM ".TABLE_PREFIX."user WHERE username = '".
		if ($vbulletin->userinfo){
			process_new_login($vbulletin->GPC['logintype'], $remember_me, $vbulletin->GPC['cssprefs']);
			return true;
		return false;

new vBulletinUser();

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Ray PaseurCommented:
I don't think I would call it.  It looks like a PHP4 implementation, maybe.  No class constructor, etc.  But that aside...

$x = new VBulletinUser();
if ($x->login('UserName', TRUE)) echo "WE GOT LOGGED IN";

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It's not PHP4 because it's 'static', and there weren't static methods back then.
You call it like this:
VBulletinUser::login('UserName', TRUE);

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seems like there are different meanings to the word "properly"...
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