PHP ile belirli bir klasör içindeki tüm dosya ve klasörleri listeleme

cloud
    candidates
        one
            one1.xls
            one2.pdf
        three
        two
            a
            two
                info.txt
            info.txt
        info.rtf
        logo.jpg
        readme.txt
    clients
        one
            one
            one1.txt
            one2.png
            one3.doc
            one4.docx
        two
            two1.rtf
        readme.txt

class TreeView
{
    public function getTree($path)
    {
        $folders = [];
        $files = [];

        foreach (scandir($path) as $node) {
            if ($this->filter($node)) {
                continue;
            }

            if (is_dir($path.'/'.$node)) {
                $folders[$node] = self::getTree($path.'/'.$node);
            } else {
                $files[] = $node;
            }
        }

        return array_merge($folders, $files);
    }

    private function filter($filename)
    {
        return in_array($filename, ['.', '..', 'index.php', '.htaccess']);
    }
}

$treeView = new TreeView();
$tree = $treeView->getTree('cloud');
print_r($tree);

Array
(
    [candidates] => Array
        (
            [one] => Array
                (
                    [0] => one1.xls
                    [1] => one2.pdf
                )
            [three] => Array
                (
                )
            [two] => Array
                (
                    [a] => Array
                        (
                        )
                    [two] => Array
                        (
                            [0] => info.txt
                        )
                    [0] => info.txt
                )
            [0] => info.rtf
            [1] => logo.jpg
            [2] => readme.txt
        )
    [clients] => Array
        (
            [one] => Array
                (
                    [one] => Array
                        (
                        )
                    [0] => one1.txt
                    [1] => one2.png
                    [2] => one3.doc
                    [3] => one4.docx
                )
            [two] => Array
                (
                    [0] => two1.rtf
                )
            [0] => readme.txt
        )
)