分享一个wordpress技巧，只需简单的一段代码，就可以让 WordPress 像 CMS 站点那样在分类列表页面调用显示其下相关子分类的各自文章列表，如果当前分类下不存在子分类，则显示该分类下的文章列表。效果如下图：

具体方法：将下列代码按需调整后添加到wordpress主题的分类目录模板文件（category.php）中即可。

1. <?php
2.     global $cat;
3.     $cats = get_categories(array(
4.         'child_of' => $cat,
5.         'parent' => $cat,
6.         'hide_empty' => 0
7.     ));
8.     $c = get_category($cat);
9.     if(emptyempty($cats)){
10. ?>
11. <div class="item">
12.     <?php if (have_posts()) : while (have_posts()) : the_post(); ?>
13.     <div class="post">
14.         <h2><a title="<?php the_title(); ?>" href="http://uuxn.com/show-wordpress-subcategories-article-in-category/<?php the_permalink(); ?>"><?php the_title(); ?></a></h2>
15.         <p><?php the_excerpt(); ?></p>
16.         <p><a href="http://uuxn.com/show-wordpress-subcategories-article-in-category/<?php the_permalink(); ?>">全文阅读>></a></p>
17.         <div class="meta"><?php the_time('Y-m-d'); ?> | 标签: <?php the_tags('', ' , ', ''); ?></div>
18.     </div>
19.     <?php endwhile; ?>
20.     <?php else: ?>
21.         <div class="post"><p>文章稍后更新</p></div>
22.     <?php endif; ?>
23. </div>
24. <div class="navigation">
25.     <span class="alignleft"><?php next_posts_link('&laquo; Older posts') ?></span>
26.     <span class="alignright"><?php previous_posts_link('Newer posts &raquo;') ?></span>
27. </div>
28. <?php
29. }else{
30.     foreach($cats as $the_cat){
31.         $posts = get_posts(array(
32.             'category' => $the_cat->cat_ID,
33.             'numberposts' => 10,
34.         ));
35.         if(!emptyempty($posts)){
36.             echo '
37.             <div class="item cat_item">
38.                 <div class="item_title"><h2><a title="'.$the_cat->name.'" href="http://uuxn.com/show-wordpress-subcategories-article-in-category/'.get_category_link($the_cat).'">'.$the_cat->name.'</a></h2></div>
39.                 <ul class="box_list">';
40.                     foreach($posts as $post){
41.                         echo '<li><span class="alignright">'.mysql2date('Y-m-d', $post->post_date).'</span>
42.                         <a title="'.$post->post_title.'" href="http://uuxn.com/show-wordpress-subcategories-article-in-category/'.get_permalink($post->ID).'">'.$post->post_title.'</a></li>';
43.                     }
44.                 echo '</ul>
45.             </div>';
46.         }
47.     }
48. }
49. ?>

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