如何在主题列表页显示今日发帖数、欢迎新会员这些

找到了这一段代码，放到了forumdisplay.htm但是为什么木有效果呢？请问还要修改哪里，谢谢！
首页：

主题列表：

1. <div id="ct" class="wp cl{if $_G['setting']['forumallowside']} ct2{/if}">
   
2.         <!--{if empty($gid)}-->
   
3.                 <div id="chart" class="bm bw0 cl">
   
4.                         <p class="chart z">{lang index_today}: <em>$todayposts</em><span class="pipe">|</span>{lang index_yesterday}: <em>$postdata[0]</em><span class="pipe">|</span>{lang index_posts}: <em>$posts</em><span class="pipe">|</span>{lang index_members}: <em>$_G['cache']['userstats']['totalmembers']</em><!--{if $_G['cache']['userstats']['newsetuser']}--><span class="pipe">|</span>{lang welcome_new_members}: <em><a href="home.php?mod=space&username={echo rawurlencode($_G['cache']['userstats']['newsetuser'])}" target="_blank" class="xi2">$_G['cache']['userstats']['newsetuser']</a></em><!--{/if}--></p>
   
5.                         <div class="y">
   
6.                                 <!--{hook/index_nav_extra}-->
   
7.                                 <!--{if $_G['uid']}--><a href="forum.php?mod=guide&view=my" title="{lang my_posts}" class="xi2">{lang my_posts}</a><!--{/if}--><!--{if !empty($_G['setting']['search']['forum']['status'])}--><!--{if $_G['uid']}--><span class="pipe">|</span><!--{/if}--><a href="forum.php?mod=guide&view=new" title="{lang show_newthreads}" class="xi2">{lang show_newthreads}</a><!--{/if}-->
   
8.                         </div>
   
9.                 </div>
   
10.         <!--{/if}-->
    
11.         <!--[diy=diy_chart]--><div id="diy_chart" class="area"></div><!--[/diy]-->

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