Filters::getFilteredOffersId

static function getFilteredOffersId(array $filter)
{
	$result = array();
	if (empty($filter) || !is_array($filter))
		return $result;

	$itemsIterator = CIBlockElement::getList(array(), $filter, false, false, array('ID'));
	while ($item = $itemsIterator->fetch())
	{
		$item['ID'] = (int)$item['ID'];
		$result[$item['ID']] = $item['ID'];
	}
	unset($item, $itemsIterator);

	return $result;
}