public function getStrippedTitle()
{
  $result = strtolower($this->getTitle());
 
  // strip all non word chars
  $result = preg_replace('/\W/', ' ', $result);
 
  // replace all white space sections with a dash
  $result = preg_replace('/\ +/', '-', $result);
 
  // trim dashes
  $result = preg_replace('/\-$/', '', $result);
  $result = preg_replace('/^\-/', '', $result);
 
  return $result;
}