disucz 为图片附件添加alt和title

打开template/default/forum/discuzcode.htm找到如下一堆代码

1. <!--{if $_G['setting']['thumbstatus'] && $attach['thumb']}-->
   
2.     <img{if $attach['price'] && $_G['forum_attachmentdown'] && $_G['uid'] != $attach['uid']} class="attprice"{/if} style="cursor:pointer" id="aimg_$attach[aid]" aid="$attach[aid]" src="{STATICURL}image/common/none.gif" onclick="zoom(this, this.getAttribute('zoomfile'), 0, 0, '{$_G[setting][showexif]}')" zoomfile="{if $attach[refcheck]}forum.php?mod=attachment{$is_archive}&aid=$aidencode&noupdate=yes&#172;humb=yes{else}{$attach[url]}$attach[attachment]{/if}" file="{if $attach[refcheck]}forum.php?mod=attachment{$is_archive}&aid=$aidencode{else}{$attach[url]}$attachthumb{/if}" inpost="1"{if $_GET['from'] != 'preview'} onmouseover="showMenu({'ctrlid':this.id,'pos':'12'})"{/if} />
   
3. <!--{else}-->
   
4.      <img{if $attach['price'] && $_G['forum_attachmentdown'] && $_G['uid'] != $attach['uid']} class="attprice"{/if} id="aimg_$attach[aid]" aid="$attach[aid]" src="{STATICURL}image/common/none.gif" zoomfile="{if $attach[refcheck]}forum.php?mod=attachment{$is_archive}&aid=$aidencode&noupdate=yes&#172;humb=yes{else}{$attach[url]}$attach[attachment]{/if}" file="{if $attach[refcheck]}forum.php?mod=attachment{$is_archive}&aid=$aidencode&noupdate=yes{else}{$attach[url]}$attach[attachment]{/if}" $widthcode id="aimg_$attach[aid]" inpost="1"{if $_GET['from'] != 'preview'} onmouseover="showMenu({'ctrlid':this.id,'pos':'12'})"{/if} />
   
5. <!--{/if}-->

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这两段就是帖子上传的图片的<img src="">代码，我们在这里直接加alt和title，我的做法是当上传图片时添加了描述，alt和title就都显示图片描述内容，如果没写描述就显示为帖子标题。
完整代码为：

1. <!--{if $_G['setting']['thumbstatus'] && $attach['thumb']}-->
   
2.         <img{if $attach['price'] && $_G['forum_attachmentdown'] && $_G['uid'] != $attach['uid']} class="attprice"{/if} style="cursor:pointer" id="aimg_$attach[aid]" aid="$attach[aid]" src="{STATICURL}image/common/none.gif" onclick="zoom(this, this.getAttribute('zoomfile'), 0, 0, '{$_G[setting][showexif]}')" zoomfile="{if $attach[refcheck]}forum.php?mod=attachment{$is_archive}&aid=$aidencode&noupdate=yes&#172;humb=yes{else}{$attach[url]}$attach[attachment]{/if}" file="{if $attach[refcheck]}forum.php?mod=attachment{$is_archive}&aid=$aidencode{else}{$attach[url]}$attachthumb{/if}" inpost="1"{if $_GET['from'] != 'preview'} onmouseover="showMenu({'ctrlid':this.id,'pos':'12'})"{/if} {if $attach[description]}alt="$attach[description]" title="$attach[description]" {else} alt="$_G[forum_thread][subject]" title="$_G[forum_thread][subject]"{/if}/>
   
3. <!--{else}-->
   
4.      <img{if $attach['price'] && $_G['forum_attachmentdown'] && $_G['uid'] != $attach['uid']} class="attprice"{/if} id="aimg_$attach[aid]" aid="$attach[aid]" src="{STATICURL}image/common/none.gif" zoomfile="{if $attach[refcheck]}forum.php?mod=attachment{$is_archive}&aid=$aidencode&noupdate=yes&#172;humb=yes{else}{$attach[url]}$attach[attachment]{/if}" file="{if $attach[refcheck]}forum.php?mod=attachment{$is_archive}&aid=$aidencode&noupdate=yes{else}{$attach[url]}$attach[attachment]{/if}" $widthcode id="aimg_$attach[aid]" inpost="1"{if $_GET['from'] != 'preview'} onmouseover="showMenu({'ctrlid':this.id,'pos':'12'})"{/if} {if $attach[description]}alt="$attach[description]" title="$attach[description]" {else} alt="$_G[forum_thread][subject]" title="$_G[forum_thread][subject]"{/if}/>
   
5. <!--{/if}-->

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细看的话就是在这两段里同时加了一句

1. {if $attach[description]}alt="$attach[description]" title="$attach[description]" {else} alt="$_G[forum_thread][subject]" title="$_G[forum_thread][subject]"{/if}

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意思就是当图片描述（变量$attach[description]）存在时，则显示描述（$attach[description]），否则显示帖子标题（变量$_G[forum_thread][subject]）
如果不喜欢这么判断，只想统一加成帖子标题，那么去掉判断，只加一句

1. alt="$_G[forum_thread][subject]" title="$_G[forum_thread][subject]
   

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