helpers.php

function pullOut(array &$arr, ...$parameters)
{
    $result = [];
    foreach ($parameters as $key => $parameter) {
        $result[$key] = $arr[$parameter];
        unset($arr[$parameter]);
    }
    return $result;
}

function array_values_recursive(array $arr): array
{
    $arr = array_values($arr);

    foreach ($arr as $key => $value) {
        if (is_array($value)) {
            $arr[$key] = array_values_recursive($value);
        }
    }
    return $arr;
}

function array_list(array $array, &$total)
{
    if (is_null($total)) {
        $total = [];
    }

    foreach ($array as $item) {
        if (is_array($item)) {
            array_list($item, $total);
        } else {
            array_push($total, $item);
        }
    }
}

function scandir_filtered($dir)
{
    if (!is_dir($dir)) {
        throw new Exception("Directory Not Found");
    }

    return array_diff(scandir($dir), [".", ".."]);
}