$arSelect = Array("ID", "NAME");
$arFilter = Array("IBLOCK_ID"=> 77, "ACTIVE_DATE"=>"Y", "ACTIVE"=>"Y");
$res = CIBlockElement::GetList(Array(), $arFilter, false, Array("nPageSize"=>50), $arSelect);
while($ob = $res->GetNextElement())
{
$row = (object) $ob->GetFields();

echo "'$row->NAME' => '$row->ID";
}