PHP ile treeview yaratmak

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class TreeView
{
    private $root;

    public function __construct($path)
    {
        $this->root = $path;
    }

    public function getTree($path = null)
    {
        $path = $path ? $path : $this->root;
        $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] = str_replace($this->root.'/', null, $path.'/'.$node);;
            }
        }

        return array_merge($folders, $files);
    }

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

$treeView = new TreeView('../uploads/');
$tree = $treeView->getTree();

function printTree($tree)
{
    if ($tree) {
        echo '<ul class="fa-ul">';
        foreach ($tree as $node => $sub) {
            if (strstr($node, '.')) {
                echo '<li><i class="fa-li fa fa-file-o" aria-hidden="true"></i>';
                echo '<a href="download.php?'.$sub.'">'.$node.'</a>';
                echo '</li>';
            } else {
                echo '<li><i class="fa-li fa fa-folder" aria-hidden="true"></i>'.$node.'</li>';
            }

            if (is_array($sub)) {
                printTree($sub);
            }
        }
        echo '</ul>';
    }
}

printTree($tree);