Helper::getProductById

static function getProductById($productId, $quantity, $siteId)
{
	$result = array();

	if(CModule::IncludeModule('catalog'))
	{
		//TODO: change to new provider
		if ($productProvider = CSaleBasket::GetProductProvider(array(
			"MODULE" => "catalog",
			"PRODUCT_PROVIDER_CLASS" => "CCatalogProductProvider"))
		)
		{
			global $USER;
			$bTmpUserCreated = false;
			if (!CCatalog::IsUserExists())
			{
				$bTmpUserCreated = true;
				if (isset($USER))
				{
					$USER_TMP = $USER;
					unset($USER);
				}

				$USER = new CUser();
			}

			$result = $productProvider::GetProductData(array(
				"PRODUCT_ID" => $productId,
				"RENEWAL"    => "N",
				"QUANTITY" => $quantity,
				"SITE_ID"    => $siteId
			));

			$result["MODULE"] = "catalog";
			$result["PRODUCT_PROVIDER_CLASS"] = "CCatalogProductProvider";
			$dbIblockElement = CIBlockElement::GetList(array(), array("ID" => $productId), false, false, array('XML_ID', 'IBLOCK_EXTERNAL_ID'));

			if($IblockElement = $dbIblockElement->Fetch())
			{
				if($IblockElement["XML_ID"] <> '')
					$result["PRODUCT_XML_ID"] = $IblockElement["XML_ID"];

				if($IblockElement["IBLOCK_EXTERNAL_ID"] <> '')
					$result["CATALOG_XML_ID"] = $IblockElement["IBLOCK_EXTERNAL_ID"];
			}

			if ($bTmpUserCreated)
			{
				unset($USER);
				if (isset($USER_TMP))
				{
					$USER = $USER_TMP;
					unset($USER_TMP);
				}
			}
		}
	}
	else
	{
		throw new BitrixMainSystemException("Can't include module "Catalog"!");
	}

	return $result;
}