TOPIC: Maximum function nesting level of '100' reached

    public function unzipAll($start)
    {
        $iterator = new RecursiveDirectoryIterator($start);
 
        foreach ($iterator as $file) {
            if ($file->isFile()) {
                $extension = $file->getExtension();
                if ($extension == 'zip') {
                    $unzip = $file->getPath() . '/' . $file->getBasename('.' . $extension);
                    $result = JArchive::extract($file->getPathname(), $unzip);
//                     delete the archive once we extract it
                    if ($result) {
                        JFile::delete($file->getPathname());
 
//                      now check the new extracted folder for archive files
                        $this->unzipAll($unzip);
                    }
                }
            } else if (!$iterator->isDot()) {
                $this->unzipAll($file->getPathname());
 
            }
        }
    }