Method getFileDate

public function getFileDate($filename, $date)
{
    $dateO = '';
    $ddt = $this->params->get('display_date_type', 0);
    if ((int) $ddt > 0) {
        if ($filename != '') {
            $dateO = PhocaDownloadFile::getFileTime($filename, $ddt);
        }
    } else {
        $dateO = HTMLHelper::Date($date, Text::_('DATE_FORMAT_LC3'));
    }
    return $dateO;
}