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<?
$arParams["SECTION_ID"] = //id раздела
$arParams["SECTION_CODE"] = //код раздела

	if($arParams["SECTION_ID"]>0)
	{
		$arFilter["ID"] = $arParams["SECTION_ID"];
		$rsSections = CIBlockSection::GetList(array(), $arFilter, false, $arSelect);
		$rsSections->SetUrlTemplates("", $arParams["SECTION_URL"]);
		$arResult["SECTION"] = $rsSections->GetNext();
	}
	elseif('' != $arParams["SECTION_CODE"])
	{
		$arFilter["=CODE"] = $arParams["SECTION_CODE"];
		$rsSections = CIBlockSection::GetList(array(), $arFilter, false, $arSelect);
		$rsSections->SetUrlTemplates("", $arParams["SECTION_URL"]);
		$arResult["SECTION"] = $rsSections->GetNext();
	}

	if(is_array($arResult["SECTION"]))
	{

		$ipropValues = new \Bitrix\Iblock\InheritedProperty\SectionValues($arResult["SECTION"]["IBLOCK_ID"], $arResult["SECTION"]["ID"]);
		$arResult["SECTION"]["IPROPERTY_VALUES"] = $ipropValues->getValues();

		$arResult["SECTION"]["PATH"] = array();
		$rsPath = CIBlockSection::GetNavChain($arResult["SECTION"]["IBLOCK_ID"], $arResult["SECTION"]["ID"]);
		$rsPath->SetUrlTemplates("", $arParams["SECTION_URL"]);
		while($arPath = $rsPath->GetNext())
		{
			$ipropValues = new \Bitrix\Iblock\InheritedProperty\SectionValues($arParams["IBLOCK_ID"], $arPath["ID"]);
			$arPath["IPROPERTY_VALUES"] = $ipropValues->getValues();
			$arResult["SECTION"]["PATH"][]=$arPath;
		}
	}