/**
* 获得查询时间和次数，并赋值给smarty
*
* @access  public
* @return  void
*/
function assign_query_info()
{
    if ($GLOBALS['db']->queryTime == '')
    {
        $query_time = 0;
    }
    else
    {
        if (PHP_VERSION >= '5.0.0')
        {
            $query_time = number_format(microtime(true) - $GLOBALS['db']->queryTime, 6);
        }
        else
        {
            list($now_usec, $now_sec)     = explode(' ', microtime());
            list($start_usec, $start_sec) = explode(' ', $GLOBALS['db']->queryTime);
            $query_time = number_format(($now_sec - $start_sec) + ($now_usec - $start_usec), 6);
        }
    }
    $GLOBALS['smarty']->assign('query_info', sprintf($GLOBALS['_LANG']['query_info'], $GLOBALS['db']->queryCount, $query_time));
    /* 内存占用情况 */
    if ($GLOBALS['_LANG']['memory_info'] && function_exists('memory_get_usage'))
    {
        $GLOBALS['smarty']->assign('memory_info', sprintf($GLOBALS['_LANG']['memory_info'], memory_get_usage() / 1048576));
    }
    /* 是否启用了 gzip */
    $gzip_enabled = gzip_enabled() ? $GLOBALS['_LANG']['gzip_enabled'] : $GLOBALS['_LANG']['gzip_disabled'];//这行出错
$GLOBALS['smarty']->assign('gzip_enabled', $gzip_enabled);
}