CWebDavExtLinks::GetUserID

static function GetUserID($userID = null)
{
	$userID = intval($userID);
	if($userID > 0)
	{
		return $userID;
	}
	elseif(array_key_exists("USER", $GLOBALS))
	{
		if($GLOBALS["USER"]->IsAuthorized())
		{
			return intval($GLOBALS["USER"]->GetID());
		}
	}
	return 0;
}