How to get URL TITLE?

function Word_limit($str = '')
  {
    $this->EE =& get_instance();

    $total = ( ! $this->EE->TMPL->fetch_param('total')) ? 500 :  $this->EE->TMPL->fetch_param('total');        
    $total = ( ! is_numeric($total)) ? 500 : $total;

    // This fetchs a 2nd parameter from the tag.
    // Used in the link below.
    $title = $this->EE->TMPL->fetch_param('title');
        
    $str = ($str == '') ? $this->EE->TMPL->tagdata : $str;
        
    $my_returned_str = $this->EE->functions->word_limiter($str, $total);    
        
    if ($my_returned_str > $str) 
    {
      $this->return_data = $my_returned_str . "<span><a >[ read more ]</a></span>";
    } else {
      $this->return_data = $my_returned_str;
    }
}