ecshop清除缓存css样式不起作用解决办法

if (!empty($_CFG['stylename']))
{
$smarty->assign('ecs_css_path', 'themes/' . $_CFG['template'] . '/style_' . $_CFG['stylename'] . '.css');
}
else
{
$smarty->assign('ecs_css_path', 'themes/' . $_CFG['template'] . '/style.css');
}

if (!empty($_CFG['stylename']))
{
$smarty->assign('ecs_css_path', 'themes/' . $_CFG['template'] . '/style_' . $_CFG['stylename'] . '.css?'.time());
}
else
{
$smarty->assign('ecs_css_path', 'themes/' . $_CFG['template'] . '/style.css?'.time());
}