Why do duplicate catalog items occur when sorting images based on width and height?

Question

PHP

Please explain why there is a duplication of the elements of the catalog list, with such a list output in an attempt to sort products by image format - first vertical, then square, horizontal, others not included in the condition, without photos?

Code example

if (!isset($_GET['byName']) && !isset($_GET['byPrice']))
{

 
    $arVert = array();
    $arSquare = array();
    $arHor = array();
    $arQwadrat = array();
    $arWithPhoto = array();
    $arNoPhoto = array();
    foreach ($arResult['elements'] as $key => $value) 
        $arFile = array();
        if (isset($value["DEPTH_LEVEL"])) {
            if (count($value['UF_CROPED']) > 0) {
                $arFile = CFile::GetFileArray($value['UF_CROPED'][0]);
                $arWithPhoto[$key] = $value;
            } else {
                $arNoPhoto[$key] = $value;
            }
        } else {
            if (!empty($value["DETAIL_PICTURE"])) {
                $arWithPhoto[$key] = $value;
                $arFile = CFile::GetFileArray($value["DETAIL_PICTURE"]);
            } else {
                $arNoPhoto[$key] = $value;
            }
        }
        
        if (!empty($arFile['WIDTH']) && !empty($arFile['HEIGHT']))
        {
            $k = floatval(intval($arFile['WIDTH']) / intval($arFile['HEIGHT']));
             if ($k > 1.2)
            {
                $arHor[$key] = $value;
            }
           
            elseif ($k < 0.8) {
                $arVert[$key] = $value;
           }
            else
             {
                $arSquare[$key] = $value;
             }
        }
    }
    $arResult['elements'] = array_merge($arVert, $arSquare, $arHor, $arWithPhoto, $arNoPhoto);
}

Answer 1

Why do you need the $arWithPhoto array ? It duplicates what goes into $arHor , $arVert and $arSquare .