function aiowps_delete_backup_files()
 {
     global $aio_wp_security;
     if ($aio_wp_security->configs->get_value('aiowps_backup_files_stored') > 0) {
         $path_parts = pathinfo($this->last_backup_file_path);
         $backups_path = $path_parts['dirname'];
         $files = AIOWPSecurity_Utility_File::scan_dir_sort_date($backups_path);
         $count = 0;
         foreach ($files as $file) {
             if (strpos($file, 'database-backup') !== false) {
                 if ($count >= $aio_wp_security->configs->get_value('aiowps_backup_files_stored')) {
                     @unlink($backups_path . '/' . $file);
                 }
                 $count++;
             }
         }
     }
 }