CCalendar::GetCurUserId

static function GetCurUserId($refresh = false): int
{
	global $USER;

	if (!isset(self::$curUserId)
		|| !is_numeric(self::$curUserId)
		|| $refresh
	)
	{
		self::$curUserId =
			(is_object($USER) && $USER->IsAuthorized())
				? (int)$USER->GetId()
				: 0
		;
	}

	return self::$curUserId;
}