How to display an element in the presence of a property (Bitrix)?

Question

1C-Bitrix

Hello. There is a property in element properties. If there is a property, you need to display elements with this property in one block. If the property is empty, then the elements without the property are placed in another block.
How to do it?

Answer 1

The question is rather vaguely written.
If we are talking about how to separate elements with a filled property from elements with an empty one, you can do this:

$IblockID = 1;
$res = CIBlockElement::GetList([], ['IBLOCK_ID' => $IblockID], false, false, ['IBLOCK_ID', 'NAME', 'PROPERTY_ISEMPTY']);
while($item = $res -> Fetch())
{
    if($item['PROPERTY_ISEMPTY_VALUE'])
    {
        $arResult['FILLED'][] = $item;
    }
    else
    {
        $arResult['EMPTY'][] = $item;
    }
}

The output will be 2 arrays - FILLED (where the property is filled) and EMPTY (where it is empty).
Instead of ISEMPTY - you need to substitute the code of your property.