Typecho根据TAG调用相关文章代码：
<?php $this->related(5)->to($relatedPosts); ?>
<ul>
<?php while ($relatedPosts->next()): ?>
<li><a href="<?php $relatedPosts->permalink(); ?>" title="<?php $relatedPosts->title(); ?>"><?php $relatedPosts->title(); ?></a></li>
<?php endwhile; ?>
</ul>