    public function filterArray(array $items)
    {
        $filteredArray = [];
        foreach ($items as $key => $item) {
            $filtered = $this->filter($item);

            if ($filtered !== false) {
                if (is_numeric($key)) {
                    $filteredArray[] = $filtered;
                } else {
                    $filteredArray[$key] = $filtered;
                }
            }
        }

        return $filteredArray;
    }