root/trunk/includes/smarty_plugins/modifier.linkalize.php

<?php
/****************************************************** Open .node ***
 * Description:   
 * Status:        Stable.
 * Author:        Alexandre Dath <alexandre@dotnode.com>
 * $Id$
 *
 * Copyright (C) 2005 Alexandre Dath <alexandre@dotnode.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 ******************** http://opensource.ikse.net/projects/dotnode ***/


function smarty_modifier_linkalize($string)
{
    return linkalize($string);
}

 function linkalize($text, $string='link') {
      $text = preg_replace("/([^\w\/])(www\.[a-z0-9\-]+\.[a-z0-9\-]+)/i", "$1http://$2", $text); //make sure there is anhttp:// on all URLs
      $text = preg_replace("/([\w]+:\/\/[\w-?&;,#~=\.\/\@:]+[\w\/])/i", "(<a target=\"_blank\" href=\"$1\" class='link'>$string</a>)", $text); //make all URLs links

      $text = preg_replace("/[\w-\.]+@(\w+[\w-]+\.){0,3}\w+[\w-]+\.[a-zA-Z]{2,4}\b/i","<a href=\"mailto:$0\" class='link'>$0</a>",$text);

      return $text;
}

?>