Knowing how a character partition ID to its ID?

I have come to the page $_REQUEST['CODE'] section , as knowing him to obtain the partition ID knowing his character code ?
Tried so

$rsSections = CIBlockSection::GetList(array(),array('IBLOCK_ID' => 25, '=CODE' => $_REQUEST['CODE']),false,array("IBLOCK_SECTION_ID ")); if ($arSection = $rsSections->Fetch()) { echo 'section ID: '.$arSection['IBLOCK_SECTION_ID']; }

does not display