Network::getPortalStage

static function getPortalStage(): string
{
	static $portalType;
	if ($portalType === null)
	{
		$portalType = 'PRODUCTION';

		if (MainLoader::includeModule('bitrix24'))
		{
			// BX24_IS_STAGE && BX24_IS_ETALON
			// true true - is an etalon
			// true false - is a stage
			// false false - is a production
			if (CBitrix24::isStage() && CBitrix24::isEtalon())
			{
				$portalType = 'ETALON';
			}
			elseif (CBitrix24::isStage() && !CBitrix24::isEtalon())
			{
				$portalType = 'STAGE';
			}
		}
	}

	return $portalType;
}