I'm unfortunately having an unknown error with my php file. (for joomla 1.5) I don't seem to get what's wrong.

This is my entire code, with an apparent error on line 84. Would appreciate some feedback, thanks.

<?php

// no direct access
defined('_JEXEC') or die('Restricted access');


if ( ! defined('modMainMenuXMLCallbackDefined') )
{
function modMainMenuXMLCallback(&$node, $args)
{
 $user = &JFactory::getUser();
 $menu = &JSite::getMenu();
 $active = $menu->getActive();
 $path = isset($active) ? array_reverse($active->tree) : null;

 if (($args['end']) && ($node->attributes('level') >= $args['end']))
 {
  $children = $node->children();
  foreach ($node->children() as $child)
  {
   if ($child->name() == 'ul') {
    $node->removeChild($child);
   }
  }
 }

 if ($node->name() == 'ul') {
  foreach ($node->children() as $child)
  {
   if ($child->attributes('access') > $user->get('aid', 0)) {
    $node->removeChild($child);
   }
  }
 }

 if (($node->name() == 'li') && isset($node->ul)) {
  $node->addAttribute('class', 'parent');
 }

 if (isset($path) && (in_array($node->attributes('id'), $path) || in_array($node->attributes('rel'), $path)))
 {
  if ($node->attributes('class')) {
   $node->addAttribute('class', $node->attributes('class').' active');
  } else {
   $node->addAttribute('class', 'active');
  }
 }
 else
 {
  if (isset($args['children']) && !$args['children'])
  {
   $children = $node->children();
   foreach ($node->children() as $child)
   {
    if ($child->name() == 'ul') {
     $node->removeChild($child);
    }
   }
  }
 }

 if (($node->name() == 'li') && ($id = $node->attributes('id'))) {
  if ($node->attributes('class')) {
   $node->addAttribute('class', $node->attributes('class').' item'.$id);
  } else {
   $node->addAttribute('class', 'item'.$id);
  }
 }

 if (isset($path) && $node->attributes('id') == $path[0]) {
  $node->addAttribute('id', 'current');
 } else {
  $node->removeAttribute('id');
 }
 $node->removeAttribute('rel');
 $node->removeAttribute('level');
 $node->removeAttribute('access');
}
 define('modMainMenuXMLCallbackDefined', true);
}

modMainMenuHelper::render($params, 'modMainMenuXMLCallback');

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