SpyWSamara

<?php

use Bitrix\Main\Diag\Debug;

Debug::startTimeLabel('convert');
$iterator = new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator(\Bitrix\main\Application::getDocumentRoot().'/upload/resize_cache'));

$files = [];
foreach ($iterator as $entity) {
    if ($entity->isDir()) {