/**
* Set the default backup filename.
*/
public function __construct()
{
parent::__construct();
$this->set_backup_filename(implode('-', array(str_ireplace(array('http://', 'https://', 'www'), '', home_url()), 'backup', current_time('Y-m-d-H-i-s'))) . '.zip');
$this->excludes = new Excludes();
}