public function getBackupFiles($lang_directory, $ext = 'php') { $files = $lang_directory . '/*/*[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]_[0-9][0-9][0-9][0-9][0-9][0-9].' . $ext; return glob($files); }