if (defined('IN_ADMIN'))
  add_event_handler('get_admin_plugin_menu_links', 'svn_auto_update');

function svn_auto_update($menu)
{
  global $page;

  if ($page['page'] == 'intro')
  {
    if (isset($_GET['action']) and $_GET['action'] == 'check_upgrade' )
      unset($_SESSION['svn_update']);

    if (!isset($_SESSION['svn_update']))
    {
      exec('cd '.realpath(PHPWG_ROOT_PATH));
      exec('svn update', $return);
      $_SESSION['svn_update'] = true;
      array_push($page['infos'], 'svn update<br>'.implode('<br>', $return));
    }
  }
  return $menu;
}