Get the elements on the description of the properties of the line

[Alberto]

There's a multiple properties like a line: "CML2_TRAITS", need to get elements that have a field description (DESCRIPTION) contains the line "Зачеркнутая цена"♪ Here comes back the elements of which the value contains "2 900"I need a field. DECRIPTION♪

$arSelect = Array();
$arFilter = Array("IBLOCK_ID"=>8, "ACTIVE_DATE"=>"Y", "ACTIVE"=>"Y", "PROPERTY_CML2_TRAITS" => "%2 900%");
$res = CIBlockElement::GetList(Array(), $arFilter, false, Array("nPageSize"=>50), $arSelect);
while($ob = $res->GetNextElement())
{
 $arFields = $ob->GetFields();
 print_r($arFields);
}

That's how it works, $oldPriceFilterID contains the necessary elements, but there's a quick-action problem, there's a first round of all the elements of the catalogue, and then they're already in nature. Is the solution easier?

$arSelect = Array("ID", "IBLOCK_ID", "NAME", "DATE_ACTIVE_FROM","PROPERTY_*");
$arFilter = Array("IBLOCK_ID"=>8, "ACTIVE_DATE"=>"Y", "ACTIVE"=>"Y");
$oldPriceFilter = array();
$res = CIBlockElement::GetList(Array(), $arFilter, false, false, $arSelect);
while($ob = $res->GetNextElement())
{
 $arFields = $ob->GetFields();
 $arProps = $ob->GetProperties();
 //echo "<pre>";
// print_r($arFields['ID']);
// echo "</pre>"; 
 $oldPriceArray = $arProps['CML2_TRAITS']['DESCRIPTION'];
 if (in_array("Зачеркнутая цена", $oldPriceArray))  $oldPriceFilter[] = $arFields['ID'];
}
echo "<pre>";

print_r($oldPriceFilter);

echo "</pre>";

[elysha]

The answer is: DESCRIPTION Can't be filtered."