PHP: Recursively delete old files and folder in a given directory

recursivelyPruneDirectory.php

/**
     * @param $folderName | The full directory name
     * @param $maxAge | Max Age in seconds. 172800 = 2 days.
     */
    private function recursivelyPruneDirectory($folderName, $maxAge = 60)
    {
        $items = array_diff(scandir($folderName), ['.','..']);

        foreach ($items as $fileOrFolder) {

            $path = "$folderName/$fileOrFolder";
            $startsWithDot = str_starts_with($fileOrFolder, '.');

            if ($startsWithDot) {
                continue;
            }

            $isTooOld = time() - filemtime($path) >= $maxAge;
            if (!$isTooOld) {
                continue;
            }

            if (is_file($path)) {
                unlink($path);
            } elseif (is_dir($path)) {

                // Do not dive into symbolic links...
                if (is_link($path)) {
                    continue;
                }

                // first recursively prune this underlying directory then
                $this->recursivelyPruneDirectory($path, $maxAge);

                // now check if it is empty. If so, delete it!
                $subItems = array_diff(scandir($path), ['.','..']);
                if (empty($subItems)) {
                    rmdir($path);
                }
            }
        }
    }