/**
* Hashes a filename by timestamp.
*
* @param <type> $file
* @return <type>
*/
protected function _getFileName($file)
{
$rename = parent::_getFileName($file);
$targetInfo = pathinfo($rename['target']);
$hash = md5(time());
$rename['target'] = strtolower(sprintf('%s/%s.%s', $targetInfo['dirname'], $hash, $targetInfo['extension']));
return $rename;
}
