Manager::getZone

static function getZone()
{
	static $zone = null;

	if ($zone !== null)
	{
		return $zone;
	}

	$request = Application::getInstance()->getContext()->getRequest();
	if ($request->get('user_lang'))
	{
		$zone = $request->get('user_lang');
	}
	else if (Loader::includeModule('bitrix24'))
	{
		$zone = CBitrix24::getPortalZone();
	}
	if (!isset($zone) || !$zone)
	{
		$zone = Application::getInstance()->getContext()->getLanguage();
	}

	return $zone;
}