修改文件include/arc.archives.class.php
找到
//设置全局环境变量
$this->Fields['typename'] = $this->TypeLink->TypeInfos['typename'];
SetSysEnv($this->Fields['typeid'],$this->Fields['typename'],$this->Fields['aid'],$this->Fields['title'],'archives');
在下面增加代码
//替换图片Alt为文档关键字+标题
$this->Fields['body'] = str_ireplace(array('alt=""','alt=\'\''),'',$this->Fields['body']);
$this->Fields['body'] = preg_replace("@ [\s]{0,}alt[\s]{0,}=[\"'\s]{0,}[\s\S]{0,}[\"'\s] @isU"," ",$this->Fields['body']);
$this->Fields['body'] = str_ireplace("<img " ,"<img alt='".$this->Fields['keywords']." . ".$this->Fields['title']."' ",$this->Fields['body']);
//end
重新生成文章即可,如果是其它字段,可以修改$this->Fields['body'] 为其它的字段名。