X-Cart forums - Detect IE ... Can't seem to get this to work...

I'm trying to use a plugin I found for Smarty - but no matter what I do - I can't get it to work within an X-cart template:

Code:

<?php

/**

 * Smarty plugin

 * @package Smarty

 * @subpackage plugins

 */





/**

 * Smarty {ie_detect} function plugin

 *

 * Type:     function




 * Name:     ie_detect




 * Date:     2.10.2004




 * Purpose:  Detect IE browser




 * Input:




 *

 * Example:    

 *  {ie_detect}

 *  {if $ie}

 *  <link rel="stylesheet" type="text/css" href="only-ie.css" />

 *  {else}

 *  <link rel="stylesheet" type="text/css" href="not-ie.css" />

 *  {/if}

 * @link http://smartbee.sourceforge.net/

 * @author   Martin Konicek <martin_konicek@centrum.cz>

 * @version  1.0

 * @param null

 * @param Smarty

 * @return boolen

 */

function smarty_function_ie_detect($params, &$smarty)

{

  $ie = strpos($_SERVER["HTTP_USER_AGENT"], 'MSIE') ? true : false;

  $ie = strpos($_SERVER["HTTP_USER_AGENT"], 'Opera') ? false : $ie;

  if($ie){

    $smarty->assign('ie', true);

  } else {

    $smarty->assign('ie', false);

  }

}



/* vim: set expandtab: */



?>

This is the plugin code which I placed into function.detect_ie.php into the smarty plugin directory...

into the head template I placed:

Code:

 {ie_detect}

 {if $ie}

 <link rel="stylesheet" type="text/css" href="only-ie.css" />

 {else}

 <link rel="stylesheet" type="text/css" href="not-ie.css" />

 {/if}

No matter how I tweak the code I can never get the $ie to return true or false... I know the plugin is being called - because I hardcoded

Just:

Code:

$smarty->assign('ie', "Is this working?");

And of course I was able to print it out on the template...

For some reason it's as though the $_SERVER["HTTP_USER_AGENT"] isn't functioning...

Can anyone give me code for a working IE detector?

Thank you so much!
-Ripbud