Discuz X3自带首页四格开启位置为：后台——论坛——首页四格。
首页四格代码展示位置：template\default\forum\discuz.htm
默认代码如下：
<!--{if !empty($_G['setting']['grid']['showgrid'])}-->
<!-- index four grid -->
<div class="fl bm">
<div class="bm bmw cl">
<div id="category_grid" class="bm_c" >
<table cellspacing="0" cellpadding="0"><tr>
<!--{if !$_G['setting']['grid']['gridtype']}-->
<td valign="top" class="category_l1">
<div class="newimgbox">
<h4><span class="tit_newimg"></span>{lang latest_images}</h4>
<div class="module cl slidebox_grid" style="width:218px">
<script type="text/javascript">
var slideSpeed = 5000;
var slideImgsize = [218,200];
var slideBorderColor = '{$_G['style']['specialborder']}';
var slideBgColor = '{$_G['style']['commonbg']}';
var slideImgs = new Array();
var slideImgLinks = new Array();
var slideImgTexts = new Array();
var slideSwitchColor = '{$_G['style']['tabletext']}';
var slideSwitchbgColor = '{$_G['style']['commonbg']}';
var slideSwitchHiColor = '{$_G['style']['specialborder']}';
{eval $k = 1;}
<!--{loop $grids['slide'] $stid $svalue}-->
slideImgs[<!--{echo $k}-->] = '$svalue[image]';
slideImgLinks[<!--{echo $k}-->] = '{$svalue[url]}';
slideImgTexts[<!--{echo $k}-->] = '$svalue[subject]';
{eval $k++;}
<!--{/loop}-->
</script>
<script language="javascript" type="text/javascript" src="{$_G[setting][jspath]}forum_slide.js?{VERHASH}"></script>
</div>
</div>
</td>
<!--{/if}-->
<td valign="top" class="category_l2">
<div class="subjectbox">
<h4><span class="tit_subject"></span>{lang collection_lastthread}</h4>
<ul class="category_newlist">
<!--{loop $grids['newthread'] $thread}-->
<!--{if !$thread['forumstick'] && $thread['closed'] > 1 && ($thread['isgroup'] == 1 || $thread['fid'] != $_G['fid'])}-->
<!--{eval $thread[tid]=$thread[closed];}-->
<!--{/if}-->
<li><a href="forum.php?mod=viewthread&tid=$thread[tid]&extra=$extra"{if $thread['highlight']} $thread['highlight']{/if}{if $_G['setting']['grid']['showtips']} tip="{lang title}: <strong>$thread[oldsubject]</strong><br/>{lang author}: $thread[author] ($thread[dateline])<br/>{lang show}/{lang reply}: $thread[views]/$thread[replies]" onm ouseover="showTip(this)"{else} title="$thread[oldsubject]"{/if}{if $_G['setting']['grid']['targetblank']} target="_blank"{/if}>$thread[subject]</a></li>
<!--{/loop}-->
</ul>
</div>
</td>
<td valign="top" class="category_l3">
<div class="replaybox">
<h4><span class="tit_replay"></span>{lang show_newthreads}</h4>
<ul class="category_newlist">
<!--{loop $grids['newreply'] $thread}-->
<!--{if !$thread['forumstick'] && $thread['closed'] > 1 && ($thread['isgroup'] == 1 || $thread['fid'] != $_G['fid'])}-->
<!--{eval $thread[tid]=$thread[closed];}-->
<!--{/if}-->
<li><a href="forum.php?mod=redirect&tid=$thread[tid]&goto=lastpost#lastpost"{if $thread['highlight']} $thread['highlight']{/if}{if $_G['setting']['grid']['showtips']}tip="{lang title}: <strong>$thread[oldsubject]</strong><br/>{lang author}: $thread[author] ($thread[dateline])<br/>{lang show}/{lang reply}: $thread[views]/$thread[replies]" onm ouseover="showTip(this)"{else} title="$thread[oldsubject]"{/if}{if $_G['setting']['grid']['targetblank']} target="_blank"{/if}>$thread[subject]</a></li>
<!--{/loop}-->
</ul>
</div>
</td>
<td valign="top" class="category_l3">
<div class="hottiebox">
<h4><span class="tit_hottie"></span>{lang hot_thread}</h4>
<ul class="category_newlist">
<!--{loop $grids['hot'] $thread}-->
<!--{if !$thread['forumstick'] && $thread['closed'] > 1 && ($thread['isgroup'] == 1 || $thread['fid'] != $_G['fid'])}-->
<!--{eval $thread[tid]=$thread[closed];}-->
<!--{/if}-->
<li><a href="forum.php?mod=viewthread&tid=$thread[tid]&extra=$extra"{if $thread['highlight']} $thread['highlight']{/if}{if $_G['setting']['grid']['showtips']} tip="{lang title}: <strong>$thread[oldsubject]</strong><br/>{lang author}: $thread[author] ($thread[dateline])<br/>{lang show}/{lang reply}: $thread[views]/$thread[replies]" onm ouseover="showTip(this)"{else} title="$thread[oldsubject]"{/if}{if $_G['setting']['grid']['targetblank']} target="_blank"{/if}>$thread[subject]</a></li>
<!--{/loop}-->
</ul>
</div>
</td>
<!--{if $_G['setting']['grid']['gridtype']}-->
<td valign="top" class="category_l4">
<div class="goodtiebox">
<h4><span class="tit_goodtie"></span>{lang post_digest_thread}</h4>
<ul class="category_newlist">
<!--{loop $grids['digest'] $thread}-->
<!--{if !$thread['forumstick'] && $thread['closed'] > 1 && ($thread['isgroup'] == 1 || $thread['fid'] != $_G['fid'])}-->
<!--{eval $thread[tid]=$thread[closed];}-->
<!--{/if}-->
<li><a href="forum.php?mod=viewthread&tid=$thread[tid]&extra=$extra"{if $thread['highlight']} $thread['highlight']{/if}{if $_G['setting']['grid']['showtips']} tip="{lang title}: <strong>$thread[oldsubject]</strong><br/>{lang author}: $thread[author] ($thread[dateline])<br/>{lang show}/{lang reply}: $thread[views]/$thread[replies]" onm ouseover="showTip(this)"{else} title="$thread[oldsubject]"{/if}{if $_G['setting']['grid']['targetblank']} target="_blank"{/if}>$thread[subject]</a></li>
<!--{/loop}-->
</ul>
</div>
</td>
<!--{/if}-->
</table>
</div>
</div>
</div>
<!-- index four grid end -->
<!--{/if}-->
以上个别代码说明：
{eval $k = 1;}
<!--{loop $grids['slide'] $stid $svalue}-->
slideImgs[<!--{echo $k}-->] = '$svalue[image]';
slideImgLinks[<!--{echo $k}-->] = '{$svalue[url]}';
slideImgTexts[<!--{echo $k}-->] = '$svalue[subject]';
{eval $k++;}
表示图片幻灯片从1开始，有一个幻灯片就会加1，这样会一直循环下去。比如只想显示5张幻灯图片，把$k++改成$k = 5即可。
var slideSpeed = 5000; var slideImgsize = [218,200];
slideSpeed表示播放速度，slideImgsize表示播放窗口大小。
category_l1是幻灯图片代码区{lang latest_images}，category_l2是最后回复{lang collection_lastthread}，category_l3是最新帖子{lang show_newthreads}和热门{lang hot_thread}，category_l4是精华帖子{lang post_digest_thread}，对照代码看，再自己编辑吧
首页四格代码CSS位置：template\default\common\module.css
默认代码如下：
/* 论坛首页四格 by Alice */
#category_grid { padding: 0; border-top:1px solid {COMMONBORDER}; }
#category_grid table { width:100%;table-layout: fixed; }
#category_grid td { width: 25%; }
.category_l1, .category_l2, .category_l3, .category_l4 { line-height: 25px; background: #fff; overflow: hidden; }
.category_l1 { line-height: normal; }
.category_l1, .category_l2, .category_l3 { background: url({IMGDIR}/category_lbg.png) no-repeat right center; }
.ie6 .category_l4 { margin-right: -3px; }
.slidebox_grid { position: relative; margin: 10px; border: 1px #ccc solid; }
#category_grid h4 { width:100%; height: 30px; line-height: 30px; text-indent:10px; font-size: 12px; cursor: pointer; background: url({IMGDIR}/tb.png) repeat-x; position:relative; }
.category_newlist { padding: 10px; }
.category_newlist li { background:url({IMGDIR}/dot.gif) no-repeat left center; height: 21px; line-height:21px; overflow: hidden; padding-left:10px; }
#category_grid h4 span { background:#CDCDCD; width:1px; height:30px; display:inline-block; position:absolute; left:0; top:0; }
#category_grid h4 span.tit_newimg { background:#FFF; }
#category_grid .newimgbox:hover h4 span, #category_grid .subjectbox:hover h4 span, #category_grid .replaybox:hover h4 span, #category_grid .hottiebox:hover h4 span, #category_grid .goodtiebox:hover h4 span { width:6px; background:url({IMGDIR}/grid.png) no-repeat 0 0;transition:width 0.2s ease 0s; overflow:hidden; }
#category_grid .newimgbox:hover h4 span.tit_newimg { background-position:0 -30px; }
#category_grid .subjectbox:hover h4 span.tit_subject { background-position:0 0; }
#category_grid .repalybox:hover h4 span.tit_replay { background-position:0 -30px; }
#category_grid .hottiebox:hover h4 span.tit_hottie { background-position:0 -60px; }
#category_grid .goodtiebox:hover h4 span.tit_goodtie { background-position:0 -90px; }
共同探讨，比较喜欢自带的插件！
解决X3自带首页四格幻灯图片最新的图片不在第一显示的问题
X3自带的首页四格幻灯图片的 图片路径、名称==都存放在$grids['slide']数组中
增加一行，对$grids['slide']数组进行一下排序就能让最新的图片显示在第1的位置。
找到source\module\forum\forum_index.php
$grids['slide'][$ithread['tid']] = array( 'image' => $imageurl, 'url' => 'forum.php?mod=viewthread&tid='.$ithread['tid'], 'subject' => $ithread['subject'] );
在上面代码下面增加：
rsort($grids['slide']);
即修改成如下所示代码：
$grids['slide'][$ithread['tid']] = array( 'image' => $imageurl, 'url' => 'forum.php?mod=viewthread&tid='.$ithread['tid'], 'subject' => $ithread['subject'] ); rsort($grids['slide']); } } $grids['cachetime'] = TIMESTAMP;
解决X3自带首页四格最新主题和最新回复一样的问题
由于source\class\table\table_forum_thread.php文件中调用新主题的参数是 newthread，第1105行
if($type == 'newthread') {
而source\module\forum\forum_index.php里却是thread，所以默认还是调用的最新回复贴子
$grids['newthread'] = C::t('forum_thread')->fetch_all_for_guide('thread', 0, array(), 0, 0, 0, 10, $_G['setting']['grid']['fids']);
修改 thread为newthread即可，如下第159行
$grids['newthread'] = C::t('forum_thread')->fetch_all_for_guide('newthread', 0, array(), 0, 0, 0, 10, $_G['setting']['grid']['fids']);
楼主的代码怕是抄来的，起码X3.4根本不是这样的，修改图片逆序的代码是这么改的：找到
$grids['image'] = C::t('forum_thread')->fetch_all_by_tid($tids);
在下面加上一个多维数组排序的代码如下：
$grids['image'] = C::t('forum_thread')->fetch_all_by_tid($tids);
//进行一次排序
foreach($grids['image'] as $tmpkey => $tmpvalue){
$tmpkeys[]=$tmpkey;
}
array_multisort($tmpkeys,SORT_DESC,$grids['image']); //试试能不能排序
因为php的这个array_multisort虽然会修改key的值，但是其实dz根本不用，图片显示的完全正常。
标签：category,lang,grids,thread,discuz,h4,四格,DZ,grid From： https://www.cnblogs.com/moyini/p/16838792.html