$res = CIBlockSection::GetList(
	array('left_margin' => 'asc'),
	array(
		'IBLOCK_ID' => 2
	),
	false,
	array('*')
	// array('iNumPage' => 2, 'nPageSize' => 10)
);
while ($item = $res->GetNext()) {
	echo "<pre>"; var_dump($item["NAME"]); echo "</pre>";
}