手贱把代码删了一部分，添加回去的时候就不能用了，怎么办呀？

Question

原代码：<div class="collapse navbar-collapse"> <ul class="nav navbar-nav navbar-left"> {php global $top_nav} {loop $top_nav $nav} <li {if FRAME == $nav['name'] && !defined('IN_MODULE')} class="active"{/if}><a href="{if empty($nav['url'])}{php echo url('home/welcome/' . $nav['name']);}{else}{$nav['url']}{/if}" {if !empty($nav['blank'])}target="_blank"{/if}>{$nav['title']}</a></li> {/loop} </ul> <ul class="nav navbar-nav navbar-right"> {template 'common/header-notice'} <li class="dropdown"> 我删掉的部分：if empty($nav['url'])}{php echo url('home/welcome/' . $nav['name']);}{else}{$nav['url']}{/if}" {if !empty($nav['blank'])}target="_blank"{/if}>{$nav['title'] 添加回去就彻底打不开了，网页提示：Not Found The requested URL /web/{} was not found on this server.

Answer 1

清除缓存试试？别人的电脑也打不开？

Answer 2

感觉是{}不对