D2-Active member per forum, 2.0x

foreach( $forums->forum_cache[ $fid ] as $id => $forum_data )
  {
   //-----------------------------------------
   // Get all subforum stats
   // and calculate
   //-----------------------------------------

foreach ($forums->forum_cache[ $fid ] as $id => $fd)
  {
   $forumids[] = $fd['id'];
  }
  $forum_ids = implode(",", $forumids);
  $cut_off = ($ibforums->vars['au_cutoff'] != "") ? $ibforums->vars['au_cutoff'] * 60 : 900;
  $time = time() - $cut_off;
  $DB->simple_construct(array('select' => 's.*, t.*', 'from' => "sessions s LEFT JOIN {$ibforums->vars['sql_tbl_prefix']}topics t ON (s.in_topic=t.tid)", 'where' => '(s.in_forum IN ('.$forum_ids.') OR t.forum_id IN ('.$forum_ids.')) AND s.running_time>'.$time.' AND s.in_error!=1', 'order' => 's.running_time DESC'));
  $DB->simple_exec();
  $cached = array();
  $active = array('guests' => 0, 'members' => 0);
  $rows = array(0 => array('running_time' => time(), 'member_id' => $ibforums->member['id']));
  while ($r = $DB->fetch_row())
  {
   $rows[] = $r;
  }

$temp_html .= $this->html->ForumRow( $forums->forums_format_lastinfo( $forums->forums_calc_children( $forum_data['id'], $forum_data ) ) );

$active = array('guests' => 0, 'members' => 0);
    foreach ($rows as $i => $result)
    {
     if ($result['in_forum'] == $forum_data['id'] || $result['forum_id'] == $forum_data['id'])
     {
      if ($result['member_id'] == 0)
      {
       $active['guests']++;
      }
      else
      {
       if (empty($cached[$result['member_id']]))
       {
        $cached[$result['member_id']] = 1;
        $active['members']++;
       }
      }
     }
    }
    $active['total'] = ($active['members'] + $active['guests']);
    if ($active['total'] > 0)
    {
     $active_members = str_replace("<#TOTAL#>", $active['total'], $ibforums->lang['active_members']);
     $active_members = str_replace("<#MEMBERS#>", $active['members'], $active_members);
     $active_members = str_replace("<#GUESTS#>", $active['guests'], $active_members);
    }
    else
    {
     $active_members = '';
    }
    $temp_html .= $this->html->ForumRow( $forums->forums_format_lastinfo( $forums->forums_calc_children( $forum_data['id'], $forum_data ) ), $active_members );

foreach( $forums->forum_cache['root'] as $id => $forum_data )
  {
   $cat_data = $forum_data;

foreach ($forums->forum_cache['root'] as $id => $fd)
  {
   $forumids[] = $fd['id'];
   if (is_array($forums->forum_cache[$fd['id']]))
   {
    foreach ($forums->forum_cache[$fd['id']] as $id => $f_d)
    {
     $forumids[] = $f_d['id'];
    }
   }
  }
  $forum_ids = implode(",", $forumids);
  $cut_off = ($ibforums->vars['au_cutoff'] != "") ? $ibforums->vars['au_cutoff'] * 60 : 900;
  $time = time() - $cut_off;
  $DB->simple_construct(array('select' => 's.*, t.*', 'from' => "sessions s LEFT JOIN {$ibforums->vars['sql_tbl_prefix']}topics t ON (s.in_topic=t.tid)", 'where' => '(s.in_forum IN ('.$forum_ids.') OR t.forum_id IN ('.$forum_ids.')) AND s.running_time>'.$time.' AND s.in_error!=1', 'order' => 's.running_time DESC'));
  $DB->simple_exec();
  $cached = array();
  $active = array('guests' => 0, 'members' => 0);
  $rows = array(0 => array('running_time' => time(), 'member_id' => $ibforums->member['id']));
  while ($r = $DB->fetch_row())
  {
   $rows[] = $r;
  }

$temp_html .= $this->html->ForumRow( $forums->forums_format_lastinfo( $forums->forums_calc_children( $forum_data['id'], $forum_data ) ) );

$active = array('guests' => 0, 'members' => 0);
      foreach ($rows as $i => $result)
      {
       if ($result['in_forum'] == $forum_data['id'] || $result['forum_id'] == $forum_data['id'])
       {
        if ($result['member_id'] == 0)
        {
         $active['guests']++;
        }
        else
        {
         if (empty($cached[$result['member_id']]))
         {
          $cached[$result['member_id']] = 1;
          $active['members']++;
         }
        }
       }
      }
      $active['total'] = ($active['members'] + $active['guests']);
      if ($active['total'] > 0)
      {
       $active_members = str_replace("<#TOTAL#>", $active['total'], $ibforums->lang['active_members']);
       $active_members = str_replace("<#MEMBERS#>", $active['members'], $active_members);
       $active_members = str_replace("<#GUESTS#>", $active['guests'], $active_members);
      }
      else
      {
       $active_members = '';
      }
      $temp_html .= $this->html->ForumRow( $forums->forums_format_lastinfo( $forums->forums_calc_children( $forum_data['id'], $forum_data ) ), $active_members );

'active_members' => "<#TOTAL#> User(s) Active In This Forum: <#MEMBERS#> Members, <#GUESTS#> Guests",

$lang['active_members'] = "<#TOTAL#> User(s) Active In This Forum: <#MEMBERS#> Members, <#GUESTS#> Guests";

Template Data Variables: $data,$active

<tr>
  <td align="center" class="row2" width="1%">{$data['img_new_post']}</td>
  <td class="row2">{$data['_queued_img']}<b><a href="{ipb.script_url}showforum={$data['id']}">{$data['name']}</a></b><br /><span class="forumdesc">{$data['description']}{$data['show_subforums']}<br /><i>{$data['moderator']}</i><br /><i>{$active}</i></span>{$data['_queued_info']}</td>
  <td align="center" class="row1">{$data['topics']}</td>
  <td align="center" class="row1">{$data['posts']}</td>
  <td class="row1" nowrap="nowrap">{$data['last_unread']} <span>{$data['last_post']}<br /><b>{ipb.lang['in']}:</b> {$data['last_topic']}<br /><b>{ipb.lang['by']}:</b> {$data['last_poster']}</span></td>
 </tr>