function process_text($text, $br = true, $chars = true)
   {
       $search = array(
           '[url autourl=' . AUTOURL . ' nofollow=1]',
           '[/url autourl=' . AUTOURL .' nofollow=1]',
           '[email autourl=' . AUTOURL . ' nofollow=1]',
           '[/email autourl=' . AUTOURL . ' nofollow=1]'
       );
       $replace = array('', '', '', '');
       $text = str_replace($search, $replace, $text);
       if($chars)
       {
           $text = htmlspecialchars($text, ENT_QUOTES, 'UTF-8');
           $text = str_replace('&#', '&#', $text);
       }
       else
       {
           $text = str_replace(
               array('&amp;', '>', '%3E', '<', '%3C', '"', '&amp;#'),
               array('&amp;amp;', '&gt;', '&gt;', '&lt;', '&lt;', '&quot;', '&#'),
               $text
           );
       }
       if($br)
       {
           $text = str_replace("\n", "<br />\n", $text);
       }
       return $text;
   }