代码如下：
{dede:list pagesize='49' titlelen='60'}
<li><a href="[field:arcurl /]" target="_blank">·[field:title /]</a><span>[field:pubdate function="MyDate('20y-m-d h:m:s',@me)"/]</span></li>
[field:global name='autoindex' runphp="yes"]
if(@me%5==0) @me="<div class='mylist'></div>";
else @me="";
[/field:global]
{/dede:list}
