处理封面图：
修改：/source/language/home/lang_template.php
复制代码
   

如果需要实现该呈现方式，我们需要首先了解discuz封面图片存储原理：
文件路径：/source/function/function_forum.php  
修改：/template/default/home/space_thread.htm
添加like 喜欢或查看


封面图片存储路径格式：data/attachment/forum/threadcover/43/ec/81.jpg
实现方法：
     {eval $covername = 'threadcover/'.substr(md5($thread[tid]), 0, 2).'/'.substr(md5($thread[tid]), 2, 2).'/'.$thread[tid].'.jpg'; $coverpath = ($cover < 0 ? $_G['setting']['ftp']['attachurl'] : $_G['setting']['attachurl']).'forum/'.$covername; } <li style="width: 227px; left: 0px; top: 0px;float:left;"> <div class="c cl"> <a class="z" title="$thread[subject]" onclick="atarget(this)" href=http://www.ym97.com/discuz/"forum.php?mod=viewthread&tid=$thread[tid]"> <img width="203" alt="$thread[subject]" src=http://www.ym97.com/discuz/"{eval echo $coverpath;}"> </a> </div> <h3 class="xw0"> <a href=http://www.ym97.com/discuz/"forum.php?mod=viewthread&tid=$thread[tid]" onclick="atarget(this)" target="_blank" {if $thread['displayorder'] == -1}class="recy"{/if}>$thread[subject]</a> </h3> <div class="auth cl"> <cite class="xg1 y"> {lang like}: <em>$thread[views]</em> {lang reply}: <a title="0回复" href=http://www.ym97.com/discuz/"forum.php?mod=viewthread&tid=$thread[tid]">$thread[replies]</a> </cite> <a href=http://www.ym97.com/discuz/"home.php?mod=space&uid=$thread[authorid]" target="_blank">$thread[author]</a>$thread[dateline]</div> </li>  
getthreadcover 函数： function getthreadcover($tid, $cover = 0, $getfilename = 0) { global $_G; if(emptyempty($tid)) { return ''; } $coverpath = ''; $covername = 'threadcover/'.substr(md5($tid), 0, 2).'/'.substr(md5($tid), 2, 2).'/'.$tid.'.jpg'; if($getfilename) { return $covername; } if($cover) { $coverpath = ($cover < 0 ? $_G['setting']['ftp']['attachurl'] : $_G['setting']['attachurl']).'forum/'.$covername; } return $coverpath; }  
discuz没有将主题列表封面路径存在数据表中，只是在pre_forum_thread表中存了一个cover标识。然后用getthreadcover 函数调取，diy调用的图片也会产生缩略图，可以设置缩略图的质量。