CAllIBlockElement::GetIBlockByIDList

static function GetIBlockByIDList(array $list)
{
	global $DB;
	$output = array();
	MainTypeCollection::normalizeArrayValuesByInt($list);
	if (empty($list))
		return $output;
	foreach ($list as $index => $id)
	{
		if (!empty(self::$elementIblock[$id]))
		{
			$output[$id] = self::$elementIblock[$id];
			unset($list[$index]);
		}
	}

	if (!empty($list))
	{
		foreach (array_chunk($list, 500) as $pageIds)
		{
			$strSql = "select IBLOCK_ID,ID from b_iblock_element where ID in (".join(', ', $pageIds).")";
			$rsItems = $DB->Query($strSql, false, "FILE: ".__FILE__."
 LINE: ".__LINE__);
			while ($itemData = $rsItems->Fetch())
			{
				$output[$itemData['ID']] = self::$elementIblock[$itemData['ID']] = (int)$itemData['IBLOCK_ID'];
			}
			unset($itemData, $rsItems);
		}
		unset($pageIds);
	}

	return $output;
}