这是什么情况？？？

问题描述

按照老师说的

<div class="header"><span class="title"><span style="font-size: 20px;">{$title}</span>--后台管理系统</span><span class="userinfo">【{$login}】<span><a href="javascript:;">退出</a></span></span> </div> <div class="menu" id="menu"><div class="layui-collapse" lay-accordion> <div class="layui-colla-item"><h2 class="layui-colla-title">{$left[0]['title']}</h2><div class="layui-colla-content layui-show"> <ul class="layui-nav layui-nav-tree" lay-filter="test"><li class="layui-nav-item"><a href="list.html">{$left[0]['lists'][0]['title']}</a></li><li class="layui-nav-item"><a href="list.html">{$left[0]['lists'][0]['title']}</a></li><li class="layui-nav-item"><a href="list.html">{$left[0]['lists'][0]['title']}</a></li><li class="layui-nav-item"><a href="list.html">{$left[0]['lists'][0]['title']}</a></li> </ul></div> </div> <div class="layui-colla-item"><h2 class="layui-colla-title">{$left[0]['title']}</h2><div class="layui-colla-content"> <ul class="layui-nav layui-nav-tree" lay-filter="test"><li class="layui-nav-item"><a href="list.html">{$left[0]['lists'][0]['title']}</a></li><li class="layui-nav-item"><a href="list.html">{$left[0]['lists'][0]['title']}</a></li><li class="layui-nav-item"><a href="list.html">{$left[0]['lists'][0]['title']}</a></li><li class="layui-nav-item"><a href="list.html">{$left[0]['lists'][0]['title']}</a></li> </ul></div> </div> <div class="layui-colla-item"><h2 class="layui-colla-title">{$left[0]['title']}</h2><div class="layui-colla-content"> <ul class="layui-nav layui-nav-tree" lay-filter="test"><li class="layui-nav-item"><a href="list.html">{$left[0]['lists'][0]['title']}</a></li><li class="layui-nav-item"><a href="list.html">{$left[0]['lists'][0]['title']}</a></li><li class="layui-nav-item"><a href="list.html">{$left[0]['lists'][0]['title']}</a></li><li class="layui-nav-item"><a href="list.html">{$left[0]['lists'][0]['title']}</a></li> </ul></div> </div></div> </div>

问题解答

老师的应该是在某个文件设置了变量的名称，你这直接硬抄能不出错吗