rss.php

См. документацию.

<?php
const ADMIN_SECTION = true;
 
use Bitrix\Main\Context;
use Bitrix\Main\Loader;
 
require($_SERVER['DOCUMENT_ROOT'] . '/bitrix/modules/main/include/prolog_before.php');
header("Content-Type: text/xml");
if (!Loader::includeModule('iblock'))
{
    return;
}
 
$request = Context::getCurrent()->getRequest();
 
$rawId = $request->get('ID');
if ((int)$rawId > 0)
{
    $ID = (int)$rawId;
}
else
{
    $ID = trim($rawId);
}
 
$LANG = trim((string)$request->get('LANG'));
$TYPE = trim((string)$request->get('TYPE'));
$LIMIT = (int)($request->get('LIMIT'));
 
CIBlockRSS::GetRSS($ID, $LANG, $TYPE, $LIMIT, false, false);
 
CMain::FinalActions();