WordPress添加相关文章功能（标题/缩略图样式）

本文目录[隐藏]

• 11.添加标题列表样式的相关文章
• 22.添加含缩略图的相关文章

本文将教会你如何为WordPress添加相关文章功能，并提供了标题列表样式和缩略图样式。相关文章的获取思路是：Tags标签相关>同分类下文章，也就是说，先获取标签相同的文章，如果还达不到数量，就调用该分类下的文章补足。获取方法貌似最初来自Willin Kan 大师，挖鱼源码网再次修改。

1.添加标题列表样式的相关文章

将下面的代码添加到 single.php 要显示相关文章的位置即可：

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41

&lt;h3&gt;相关文章&lt;/h3&gt; &lt;ul class=&quot;related_posts&quot;&gt; <span style="color: #000000; font-weight: bold;">&lt;?php</span> <span style="color: #000088;">$post_num</span> <span style="color: #339933;">=</span> <span style="color: #cc66cc;">8</span><span style="color: #339933;">;</span> <span style="color: #000088;">$exclude_id</span> <span style="color: #339933;">=</span> <span style="color: #000088;">$post</span><span style="color: #339933;">-&gt;</span><span style="color: #004000;">ID</span><span style="color: #339933;">;</span> <span style="color: #000088;">$posttags</span> <span style="color: #339933;">=</span> get_the_tags<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000088;">$i</span> <span style="color: #339933;">=</span> <span style="color: #cc66cc;">0</span><span style="color: #339933;">;</span> <span style="color: #b1b100;">if</span> <span style="color: #009900;">&#40;</span> <span style="color: #000088;">$posttags</span> <span style="color: #009900;">&#41;</span> <span style="color: #009900;">&#123;</span> <span style="color: #000088;">$tags</span> <span style="color: #339933;">=</span> <span style="color: #0000ff;">''</span><span style="color: #339933;">;</span> <span style="color: #b1b100;">foreach</span> <span style="color: #009900;">&#40;</span> <span style="color: #000088;">$posttags</span> <span style="color: #b1b100;">as</span> <span style="color: #000088;">$tag</span> <span style="color: #009900;">&#41;</span> <span style="color: #000088;">$tags</span> <span style="color: #339933;">.=</span> <span style="color: #000088;">$tag</span><span style="color: #339933;">-&gt;</span><span style="color: #004000;">term_id</span> <span style="color: #339933;">.</span> <span style="color: #0000ff;">','</span><span style="color: #339933;">;</span> <span style="color: #000088;">$args</span> <span style="color: #339933;">=</span> <span style="color: #990000;">array</span><span style="color: #009900;">&#40;</span> <span style="color: #0000ff;">'post_status'</span> <span style="color: #339933;">=&gt;</span> <span style="color: #0000ff;">'publish'</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">'tag__in'</span> <span style="color: #339933;">=&gt;</span> <span style="color: #990000;">explode</span><span style="color: #009900;">&#40;</span><span style="color: #0000ff;">','</span><span style="color: #339933;">,</span> <span style="color: #000088;">$tags</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">'post__not_in'</span> <span style="color: #339933;">=&gt;</span> <span style="color: #990000;">explode</span><span style="color: #009900;">&#40;</span><span style="color: #0000ff;">','</span><span style="color: #339933;">,</span> <span style="color: #000088;">$exclude_id</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">'caller_get_posts'</span> <span style="color: #339933;">=&gt;</span> <span style="color: #cc66cc;">1</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">'orderby'</span> <span style="color: #339933;">=&gt;</span> <span style="color: #0000ff;">'comment_date'</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">'posts_per_page'</span> <span style="color: #339933;">=&gt;</span> <span style="color: #000088;">$post_num</span><span style="color: #339933;">,</span> <span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> query_posts<span style="color: #009900;">&#40;</span><span style="color: #000088;">$args</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #b1b100;">while</span><span style="color: #009900;">&#40;</span> have_posts<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span> <span style="color: #009900;">&#41;</span> <span style="color: #009900;">&#123;</span> the_post<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000000; font-weight: bold;">?&gt;</span> &lt;li&gt;&lt;a rel=&quot;bookmark&quot; href=&quot;<span style="color: #000000; font-weight: bold;">&lt;?php</span> the_permalink<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000000; font-weight: bold;">?&gt;</span>&quot; title=&quot;<span style="color: #000000; font-weight: bold;">&lt;?php</span> the_title<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000000; font-weight: bold;">?&gt;</span>&quot; target=&quot;_blank&quot;&gt;<span style="color: #000000; font-weight: bold;">&lt;?php</span> the_title<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000000; font-weight: bold;">?&gt;</span>&lt;/a&gt;&lt;/li&gt; <span style="color: #000000; font-weight: bold;">&lt;?php</span> <span style="color: #000088;">$exclude_id</span> <span style="color: #339933;">.=</span> <span style="color: #0000ff;">','</span> <span style="color: #339933;">.</span> <span style="color: #000088;">$post</span><span style="color: #339933;">-&gt;</span><span style="color: #004000;">ID</span><span style="color: #339933;">;</span> <span style="color: #000088;">$i</span> <span style="color: #339933;">++;</span> <span style="color: #009900;">&#125;</span> wp_reset_query<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #009900;">&#125;</span> <span style="color: #b1b100;">if</span> <span style="color: #009900;">&#40;</span> <span style="color: #000088;">$i</span> <span style="color: #339933;">&lt;</span> <span style="color: #000088;">$post_num</span> <span style="color: #009900;">&#41;</span> <span style="color: #009900;">&#123;</span> <span style="color: #000088;">$cats</span> <span style="color: #339933;">=</span> <span style="color: #0000ff;">''</span><span style="color: #339933;">;</span> <span style="color: #b1b100;">foreach</span> <span style="color: #009900;">&#40;</span> get_the_category<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span> <span style="color: #b1b100;">as</span> <span style="color: #000088;">$cat</span> <span style="color: #009900;">&#41;</span> <span style="color: #000088;">$cats</span> <span style="color: #339933;">.=</span> <span style="color: #000088;">$cat</span><span style="color: #339933;">-&gt;</span><span style="color: #004000;">cat_ID</span> <span style="color: #339933;">.</span> <span style="color: #0000ff;">','</span><span style="color: #339933;">;</span> <span style="color: #000088;">$args</span> <span style="color: #339933;">=</span> <span style="color: #990000;">array</span><span style="color: #009900;">&#40;</span> <span style="color: #0000ff;">'category__in'</span> <span style="color: #339933;">=&gt;</span> <span style="color: #990000;">explode</span><span style="color: #009900;">&#40;</span><span style="color: #0000ff;">','</span><span style="color: #339933;">,</span> <span style="color: #000088;">$cats</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">'post__not_in'</span> <span style="color: #339933;">=&gt;</span> <span style="color: #990000;">explode</span><span style="color: #009900;">&#40;</span><span style="color: #0000ff;">','</span><span style="color: #339933;">,</span> <span style="color: #000088;">$exclude_id</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">'caller_get_posts'</span> <span style="color: #339933;">=&gt;</span> <span style="color: #cc66cc;">1</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">'orderby'</span> <span style="color: #339933;">=&gt;</span> <span style="color: #0000ff;">'comment_date'</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">'posts_per_page'</span> <span style="color: #339933;">=&gt;</span> <span style="color: #000088;">$post_num</span> <span style="color: #339933;">-</span> <span style="color: #000088;">$i</span> <span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> query_posts<span style="color: #009900;">&#40;</span><span style="color: #000088;">$args</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #b1b100;">while</span><span style="color: #009900;">&#40;</span> have_posts<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span> <span style="color: #009900;">&#41;</span> <span style="color: #009900;">&#123;</span> the_post<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000000; font-weight: bold;">?&gt;</span> &lt;li&gt;&lt;a rel=&quot;bookmark&quot; href=&quot;<span style="color: #000000; font-weight: bold;">&lt;?php</span> the_permalink<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000000; font-weight: bold;">?&gt;</span>&quot; title=&quot;<span style="color: #000000; font-weight: bold;">&lt;?php</span> the_title<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000000; font-weight: bold;">?&gt;</span>&quot; target=&quot;_blank&quot;&gt;<span style="color: #000000; font-weight: bold;">&lt;?php</span> the_title<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000000; font-weight: bold;">?&gt;</span>&lt;/a&gt;&lt;/li&gt; <span style="color: #000000; font-weight: bold;">&lt;?php</span> <span style="color: #000088;">$i</span><span style="color: #339933;">++;</span> <span style="color: #009900;">&#125;</span> wp_reset_query<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #009900;">&#125;</span> <span style="color: #b1b100;">if</span> <span style="color: #009900;">&#40;</span> <span style="color: #000088;">$i</span> <span style="color: #339933;">==</span> <span style="color: #cc66cc;">0</span> <span style="color: #009900;">&#41;</span> <span style="color: #b1b100;">echo</span> <span style="color: #0000ff;">'&lt;li&gt;没有相关文章!&lt;/li&gt;'</span><span style="color: #339933;">;</span> <span style="color: #000000; font-weight: bold;">?&gt;</span> &lt;/ul&gt; 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 &lt;h3&gt;相关文章&lt;/h3&gt; &lt;ul class=&quot;related_posts&quot;&gt; <span style="color: #000000; font-weight: bold;">&lt;?php</span> <span style="color: #000088;">$post_num</span> <span style="color: #339933;">=</span> <span style="color: #cc66cc;">8</span><span style="color: #339933;">;</span> <span style="color: #000088;">$exclude_id</span> <span style="color: #339933;">=</span> <span style="color: #000088;">$post</span><span style="color: #339933;">-&gt;</span><span style="color: #004000;">ID</span><span style="color: #339933;">;</span> <span style="color: #000088;">$posttags</span> <span style="color: #339933;">=</span> get_the_tags<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000088;">$i</span> <span style="color: #339933;">=</span> <span style="color: #cc66cc;">0</span><span style="color: #339933;">;</span> <span style="color: #b1b100;">if</span> <span style="color: #009900;">&#40;</span> <span style="color: #000088;">$posttags</span> <span style="color: #009900;">&#41;</span> <span style="color: #009900;">&#123;</span> <span style="color: #000088;">$tags</span> <span style="color: #339933;">=</span> <span style="color: #0000ff;">''</span><span style="color: #339933;">;</span> <span style="color: #b1b100;">foreach</span> <span style="color: #009900;">&#40;</span> <span style="color: #000088;">$posttags</span> <span style="color: #b1b100;">as</span> <span style="color: #000088;">$tag</span> <span style="color: #009900;">&#41;</span> <span style="color: #000088;">$tags</span> <span style="color: #339933;">.=</span> <span style="color: #000088;">$tag</span><span style="color: #339933;">-&gt;</span><span style="color: #004000;">term_id</span> <span style="color: #339933;">.</span> <span style="color: #0000ff;">','</span><span style="color: #339933;">;</span> <span style="color: #000088;">$args</span> <span style="color: #339933;">=</span> <span style="color: #990000;">array</span><span style="color: #009900;">&#40;</span> <span style="color: #0000ff;">'post_status'</span> <span style="color: #339933;">=&gt;</span> <span style="color: #0000ff;">'publish'</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">'tag__in'</span> <span style="color: #339933;">=&gt;</span> <span style="color: #990000;">explode</span><span style="color: #009900;">&#40;</span><span style="color: #0000ff;">','</span><span style="color: #339933;">,</span> <span style="color: #000088;">$tags</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">'post__not_in'</span> <span style="color: #339933;">=&gt;</span> <span style="color: #990000;">explode</span><span style="color: #009900;">&#40;</span><span style="color: #0000ff;">','</span><span style="color: #339933;">,</span> <span style="color: #000088;">$exclude_id</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">'caller_get_posts'</span> <span style="color: #339933;">=&gt;</span> <span style="color: #cc66cc;">1</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">'orderby'</span> <span style="color: #339933;">=&gt;</span> <span style="color: #0000ff;">'comment_date'</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">'posts_per_page'</span> <span style="color: #339933;">=&gt;</span> <span style="color: #000088;">$post_num</span><span style="color: #339933;">,</span> <span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> query_posts<span style="color: #009900;">&#40;</span><span style="color: #000088;">$args</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #b1b100;">while</span><span style="color: #009900;">&#40;</span> have_posts<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span> <span style="color: #009900;">&#41;</span> <span style="color: #009900;">&#123;</span> the_post<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000000; font-weight: bold;">?&gt;</span> &lt;li&gt;&lt;a rel=&quot;bookmark&quot; href=&quot;<span style="color: #000000; font-weight: bold;">&lt;?php</span> the_permalink<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000000; font-weight: bold;">?&gt;</span>&quot; title=&quot;<span style="color: #000000; font-weight: bold;">&lt;?php</span> the_title<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000000; font-weight: bold;">?&gt;</span>&quot; target=&quot;_blank&quot;&gt;<span style="color: #000000; font-weight: bold;">&lt;?php</span> the_title<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000000; font-weight: bold;">?&gt;</span>&lt;/a&gt;&lt;/li&gt; <span style="color: #000000; font-weight: bold;">&lt;?php</span> <span style="color: #000088;">$exclude_id</span> <span style="color: #339933;">.=</span> <span style="color: #0000ff;">','</span> <span style="color: #339933;">.</span> <span style="color: #000088;">$post</span><span style="color: #339933;">-&gt;</span><span style="color: #004000;">ID</span><span style="color: #339933;">;</span> <span style="color: #000088;">$i</span> <span style="color: #339933;">++;</span> <span style="color: #009900;">&#125;</span> wp_reset_query<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #009900;">&#125;</span> <span style="color: #b1b100;">if</span> <span style="color: #009900;">&#40;</span> <span style="color: #000088;">$i</span> <span style="color: #339933;">&lt;</span> <span style="color: #000088;">$post_num</span> <span style="color: #009900;">&#41;</span> <span style="color: #009900;">&#123;</span> <span style="color: #000088;">$cats</span> <span style="color: #339933;">=</span> <span style="color: #0000ff;">''</span><span style="color: #339933;">;</span> <span style="color: #b1b100;">foreach</span> <span style="color: #009900;">&#40;</span> get_the_category<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span> <span style="color: #b1b100;">as</span> <span style="color: #000088;">$cat</span> <span style="color: #009900;">&#41;</span> <span style="color: #000088;">$cats</span> <span style="color: #339933;">.=</span> <span style="color: #000088;">$cat</span><span style="color: #339933;">-&gt;</span><span style="color: #004000;">cat_ID</span> <span style="color: #339933;">.</span> <span style="color: #0000ff;">','</span><span style="color: #339933;">;</span> <span style="color: #000088;">$args</span> <span style="color: #339933;">=</span> <span style="color: #990000;">array</span><span style="color: #009900;">&#40;</span> <span style="color: #0000ff;">'category__in'</span> <span style="color: #339933;">=&gt;</span> <span style="color: #990000;">explode</span><span style="color: #009900;">&#40;</span><span style="color: #0000ff;">','</span><span style="color: #339933;">,</span> <span style="color: #000088;">$cats</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">'post__not_in'</span> <span style="color: #339933;">=&gt;</span> <span style="color: #990000;">explode</span><span style="color: #009900;">&#40;</span><span style="color: #0000ff;">','</span><span style="color: #339933;">,</span> <span style="color: #000088;">$exclude_id</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">'caller_get_posts'</span> <span style="color: #339933;">=&gt;</span> <span style="color: #cc66cc;">1</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">'orderby'</span> <span style="color: #339933;">=&gt;</span> <span style="color: #0000ff;">'comment_date'</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">'posts_per_page'</span> <span style="color: #339933;">=&gt;</span> <span style="color: #000088;">$post_num</span> <span style="color: #339933;">-</span> <span style="color: #000088;">$i</span> <span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> query_posts<span style="color: #009900;">&#40;</span><span style="color: #000088;">$args</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #b1b100;">while</span><span style="color: #009900;">&#40;</span> have_posts<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span> <span style="color: #009900;">&#41;</span> <span style="color: #009900;">&#123;</span> the_post<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000000; font-weight: bold;">?&gt;</span> &lt;li&gt;&lt;a rel=&quot;bookmark&quot; href=&quot;<span style="color: #000000; font-weight: bold;">&lt;?php</span> the_permalink<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000000; font-weight: bold;">?&gt;</span>&quot;  title=&quot;<span style="color: #000000; font-weight: bold;">&lt;?php</span> the_title<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000000; font-weight: bold;">?&gt;</span>&quot; target=&quot;_blank&quot;&gt;<span style="color: #000000; font-weight: bold;">&lt;?php</span> the_title<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000000; font-weight: bold;">?&gt;</span>&lt;/a&gt;&lt;/li&gt; <span style="color: #000000; font-weight: bold;">&lt;?php</span> <span style="color: #000088;">$i</span><span style="color: #339933;">++;</span> <span style="color: #009900;">&#125;</span> wp_reset_query<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #009900;">&#125;</span> <span style="color: #b1b100;">if</span> <span style="color: #009900;">&#40;</span> <span style="color: #000088;">$i</span>  <span style="color: #339933;">==</span> <span style="color: #cc66cc;">0</span> <span style="color: #009900;">&#41;</span>  <span style="color: #b1b100;">echo</span> <span style="color: #0000ff;">'&lt;li&gt;没有相关文章!&lt;/li&gt;'</span><span style="color: #339933;">;</span> <span style="color: #000000; font-weight: bold;">?&gt;</span> &lt;/ul&gt;

<h3>相关文章</h3>
<ul class="related_posts">
<?php
$post_num = 8;
$exclude_id = $post->ID;
$posttags = get_the_tags(); $i = 0;
if ( $posttags ) {
$tags = ”; foreach ( $posttags as $tag ) $tags .= $tag->term_id . ‘,’;
$args = array(
‘post_status’ => ‘publish’,
‘tag__in’ => explode(‘,’, $tags),
‘post__not_in’ => explode(‘,’, $exclude_id),
‘caller_get_posts’ => 1,
‘orderby’ => ‘comment_date’,
‘posts_per_page’ => $post_num,
);
query_posts($args);
while( have_posts() ) { the_post(); ?>
<li><a rel="bookmark" href="<?php the_permalink(); ?>" title="<?php the_title(); ?>" target="_blank"><?php the_title(); ?></a></li>
<?php
$exclude_id .= ‘,’ . $post->ID; $i ++;
} wp_reset_query();
}
if ( $i < $post_num ) {
$cats = ”; foreach ( get_the_category() as $cat ) $cats .= $cat->cat_ID . ‘,’;
$args = array(
‘category__in’ => explode(‘,’, $cats),
‘post__not_in’ => explode(‘,’, $exclude_id),
‘caller_get_posts’ => 1,
‘orderby’ => ‘comment_date’,
‘posts_per_page’ => $post_num – $i
);
query_posts($args);
while( have_posts() ) { the_post(); ?>
<li><a rel="bookmark" href="<?php the_permalink(); ?>" title="<?php the_title(); ?>" target="_blank"><?php the_title(); ?></a></li>
<?php $i++;
} wp_reset_query();
}
if ( $i == 0 ) echo ‘<li>没有相关文章!</li>’;
?>
</ul>

PS：第四行$post_num = 8;表示显示8篇文章，请根据自己的需要修改。

显示样式需要自己写css，可以参考一下下面的：

1 2 1 2 1 2

<span style="color: #6666ff;">.related_posts</span><span style="color: #00AA00;">&#123;</span><span style="color: #000000; font-weight: bold;">margin-top</span><span style="color: #00AA00;">:</span><span style="color: #933;">5px</span><span style="color: #00AA00;">;</span><span style="color: #00AA00;">&#125;</span> <span style="color: #6666ff;">.related_posts</span> li<span style="color: #00AA00;">&#123;</span><span style="color: #000000; font-weight: bold;">margin-left</span><span style="color: #00AA00;">:</span><span style="color: #933;">20px</span><span style="color: #00AA00;">;</span><span style="color: #000000; font-weight: bold;">color</span><span style="color: #00AA00;">:</span><span style="color: #cc00cc;">#444</span><span style="color: #00AA00;">;</span><span style="color: #000000; font-weight: bold;">list-style</span><span style="color: #00AA00;">:</span><span style="color: #993333;">circle</span><span style="color: #00AA00;">;</span><span style="color: #000000; font-weight: bold;">font-size</span><span style="color: #00AA00;">:</span><span style="color: #933;">14px</span><span style="color: #00AA00;">;</span><span style="color: #000000; font-weight: bold;">line-height</span><span style="color: #00AA00;">:</span><span style="color: #933;">26px</span><span style="color: #00AA00;">;</span><span style="color: #000000; font-weight: bold;">padding</span><span style="color: #00AA00;">:</span><span style="color: #cc66cc;">0</span> <span style="color: #cc66cc;">0</span> <span style="color: #cc66cc;">0</span> <span style="color: #933;">5px</span><span style="color: #00AA00;">&#125;</span> 1 2 <span style="color: #6666ff;">.related_posts</span><span style="color: #00AA00;">&#123;</span><span style="color: #000000; font-weight: bold;">margin-top</span><span style="color: #00AA00;">:</span><span style="color: #933;">5px</span><span style="color: #00AA00;">;</span><span style="color: #00AA00;">&#125;</span> <span style="color: #6666ff;">.related_posts</span> li<span style="color: #00AA00;">&#123;</span><span style="color: #000000; font-weight: bold;">margin-left</span><span style="color: #00AA00;">:</span><span style="color: #933;">20px</span><span style="color: #00AA00;">;</span><span style="color: #000000; font-weight: bold;">color</span><span style="color: #00AA00;">:</span><span style="color: #cc00cc;">#444</span><span style="color: #00AA00;">;</span><span style="color: #000000; font-weight: bold;">list-style</span><span style="color: #00AA00;">:</span><span style="color: #993333;">circle</span><span style="color: #00AA00;">;</span><span style="color: #000000; font-weight: bold;">font-size</span><span style="color: #00AA00;">:</span><span style="color: #933;">14px</span><span style="color: #00AA00;">;</span><span style="color: #000000; font-weight: bold;">line-height</span><span style="color: #00AA00;">:</span><span style="color: #933;">26px</span><span style="color: #00AA00;">;</span><span style="color: #000000; font-weight: bold;">padding</span><span style="color: #00AA00;">:</span><span style="color: #cc66cc;">0</span> <span style="color: #cc66cc;">0</span> <span style="color: #cc66cc;">0</span> <span style="color: #933;">5px</span><span style="color: #00AA00;">&#125;</span>

.related_posts{margin-top:5px;}
.related_posts li{margin-left:20px;color:#444;list-style:circle;font-size:14px;line-height:26px;padding:0 0 0 5px}

2.添加含缩略图的相关文章

挖鱼源码网只是根据上面的代码改了一下，添加了缩略图。

1)在主题的 functions.php 的最后一个 ?> 前添加下面的代码：

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28

<span style="color: #666666; font-style: italic;">//添加特色缩略图支持</span> <span style="color: #b1b100;">if</span> <span style="color: #009900;">&#40;</span> <span style="color: #990000;">function_exists</span><span style="color: #009900;">&#40;</span><span style="color: #0000ff;">'add_theme_support'</span><span style="color: #009900;">&#41;</span> <span style="color: #009900;">&#41;</span>add_theme_support<span style="color: #009900;">&#40;</span><span style="color: #0000ff;">'post-thumbnails'</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> &nbsp; <span style="color: #666666; font-style: italic;">//输出缩略图地址 From wpdaxue.com</span> <span style="color: #000000; font-weight: bold;">function</span> post_thumbnail_src<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #009900;">&#123;</span> <span style="color: #000000; font-weight: bold;">global</span> <span style="color: #000088;">$post</span><span style="color: #339933;">;</span> <span style="color: #b1b100;">if</span><span style="color: #009900;">&#40;</span> <span style="color: #000088;">$values</span> <span style="color: #339933;">=</span> get_post_custom_values<span style="color: #009900;">&#40;</span><span style="color: #0000ff;">&quot;thumb&quot;</span><span style="color: #009900;">&#41;</span> <span style="color: #009900;">&#41;</span> <span style="color: #009900;">&#123;</span> <span style="color: #666666; font-style: italic;">//输出自定义域图片地址</span> <span style="color: #000088;">$values</span> <span style="color: #339933;">=</span> get_post_custom_values<span style="color: #009900;">&#40;</span><span style="color: #0000ff;">&quot;thumb&quot;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000088;">$post_thumbnail_src</span> <span style="color: #339933;">=</span> <span style="color: #000088;">$values</span> <span style="color: #009900;">&#91;</span><span style="color: #cc66cc;">0</span><span style="color: #009900;">&#93;</span><span style="color: #339933;">;</span> <span style="color: #009900;">&#125;</span> <span style="color: #b1b100;">elseif</span><span style="color: #009900;">&#40;</span> has_post_thumbnail<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span> <span style="color: #009900;">&#41;</span><span style="color: #009900;">&#123;</span> <span style="color: #666666; font-style: italic;">//如果有特色缩略图，则输出缩略图地址</span> <span style="color: #000088;">$thumbnail_src</span> <span style="color: #339933;">=</span> wp_get_attachment_image_src<span style="color: #009900;">&#40;</span>get_post_thumbnail_id<span style="color: #009900;">&#40;</span><span style="color: #000088;">$post</span><span style="color: #339933;">-&gt;</span><span style="color: #004000;">ID</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">,</span><span style="color: #0000ff;">'full'</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000088;">$post_thumbnail_src</span> <span style="color: #339933;">=</span> <span style="color: #000088;">$thumbnail_src</span> <span style="color: #009900;">&#91;</span><span style="color: #cc66cc;">0</span><span style="color: #009900;">&#93;</span><span style="color: #339933;">;</span> <span style="color: #009900;">&#125;</span> <span style="color: #b1b100;">else</span> <span style="color: #009900;">&#123;</span> <span style="color: #000088;">$post_thumbnail_src</span> <span style="color: #339933;">=</span> <span style="color: #0000ff;">''</span><span style="color: #339933;">;</span> <span style="color: #990000;">ob_start</span><span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #990000;">ob_end_clean</span><span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000088;">$output</span> <span style="color: #339933;">=</span> <span style="color: #990000;">preg_match_all</span><span style="color: #009900;">&#40;</span><span style="color: #0000ff;">'/&lt;img.+src=[\'&quot;]([^\'&quot;]+)[\'&quot;].*&gt;/i'</span><span style="color: #339933;">,</span> <span style="color: #000088;">$post</span><span style="color: #339933;">-&gt;</span><span style="color: #004000;">post_content</span><span style="color: #339933;">,</span> <span style="color: #000088;">$matches</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000088;">$post_thumbnail_src</span> <span style="color: #339933;">=</span> <span style="color: #000088;">$matches</span> <span style="color: #009900;">&#91;</span><span style="color: #cc66cc;">1</span><span style="color: #009900;">&#93;</span> <span style="color: #009900;">&#91;</span><span style="color: #cc66cc;">0</span><span style="color: #009900;">&#93;</span><span style="color: #339933;">;</span> <span style="color: #666666; font-style: italic;">//获取该图片 src</span> <span style="color: #b1b100;">if</span><span style="color: #009900;">&#40;</span><span style="color: #990000;">empty</span><span style="color: #009900;">&#40;</span><span style="color: #000088;">$post_thumbnail_src</span><span style="color: #009900;">&#41;</span><span style="color: #009900;">&#41;</span><span style="color: #009900;">&#123;</span> <span style="color: #666666; font-style: italic;">//如果日志中没有图片，则显示随机图片</span> <span style="color: #000088;">$random</span> <span style="color: #339933;">=</span> <span style="color: #990000;">mt_rand</span><span style="color: #009900;">&#40;</span><span style="color: #cc66cc;">1</span><span style="color: #339933;">,</span> <span style="color: #cc66cc;">10</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #b1b100;">echo</span> get_bloginfo<span style="color: #009900;">&#40;</span><span style="color: #0000ff;">'template_url'</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #b1b100;">echo</span> <span style="color: #0000ff;">'/images/pic/'</span><span style="color: #339933;">.</span><span style="color: #000088;">$random</span><span style="color: #339933;">.</span><span style="color: #0000ff;">'.jpg'</span><span style="color: #339933;">;</span> <span style="color: #666666; font-style: italic;">//如果日志中没有图片，则显示默认图片</span> <span style="color: #666666; font-style: italic;">//echo '/images/default_thumb.jpg';</span> <span style="color: #009900;">&#125;</span> <span style="color: #009900;">&#125;</span><span style="color: #339933;">;</span> <span style="color: #b1b100;">echo</span> <span style="color: #000088;">$post_thumbnail_src</span><span style="color: #339933;">;</span> <span style="color: #009900;">&#125;</span> 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 <span style="color: #666666; font-style: italic;">//添加特色缩略图支持</span> <span style="color: #b1b100;">if</span> <span style="color: #009900;">&#40;</span> <span style="color: #990000;">function_exists</span><span style="color: #009900;">&#40;</span><span style="color: #0000ff;">'add_theme_support'</span><span style="color: #009900;">&#41;</span> <span style="color: #009900;">&#41;</span>add_theme_support<span style="color: #009900;">&#40;</span><span style="color: #0000ff;">'post-thumbnails'</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> &nbsp; <span style="color: #666666; font-style: italic;">//输出缩略图地址 From wpdaxue.com</span> <span style="color: #000000; font-weight: bold;">function</span> post_thumbnail_src<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #009900;">&#123;</span>     <span style="color: #000000; font-weight: bold;">global</span> <span style="color: #000088;">$post</span><span style="color: #339933;">;</span> <span style="color: #b1b100;">if</span><span style="color: #009900;">&#40;</span> <span style="color: #000088;">$values</span> <span style="color: #339933;">=</span> get_post_custom_values<span style="color: #009900;">&#40;</span><span style="color: #0000ff;">&quot;thumb&quot;</span><span style="color: #009900;">&#41;</span> <span style="color: #009900;">&#41;</span> <span style="color: #009900;">&#123;</span> <span style="color: #666666; font-style: italic;">//输出自定义域图片地址</span> <span style="color: #000088;">$values</span> <span style="color: #339933;">=</span> get_post_custom_values<span style="color: #009900;">&#40;</span><span style="color: #0000ff;">&quot;thumb&quot;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000088;">$post_thumbnail_src</span> <span style="color: #339933;">=</span> <span style="color: #000088;">$values</span> <span style="color: #009900;">&#91;</span><span style="color: #cc66cc;">0</span><span style="color: #009900;">&#93;</span><span style="color: #339933;">;</span> <span style="color: #009900;">&#125;</span> <span style="color: #b1b100;">elseif</span><span style="color: #009900;">&#40;</span> has_post_thumbnail<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span> <span style="color: #009900;">&#41;</span><span style="color: #009900;">&#123;</span>    <span style="color: #666666; font-style: italic;">//如果有特色缩略图，则输出缩略图地址</span>         <span style="color: #000088;">$thumbnail_src</span> <span style="color: #339933;">=</span> wp_get_attachment_image_src<span style="color: #009900;">&#40;</span>get_post_thumbnail_id<span style="color: #009900;">&#40;</span><span style="color: #000088;">$post</span><span style="color: #339933;">-&gt;</span><span style="color: #004000;">ID</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">,</span><span style="color: #0000ff;">'full'</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000088;">$post_thumbnail_src</span> <span style="color: #339933;">=</span> <span style="color: #000088;">$thumbnail_src</span> <span style="color: #009900;">&#91;</span><span style="color: #cc66cc;">0</span><span style="color: #009900;">&#93;</span><span style="color: #339933;">;</span>     <span style="color: #009900;">&#125;</span> <span style="color: #b1b100;">else</span> <span style="color: #009900;">&#123;</span> <span style="color: #000088;">$post_thumbnail_src</span> <span style="color: #339933;">=</span> <span style="color: #0000ff;">''</span><span style="color: #339933;">;</span> <span style="color: #990000;">ob_start</span><span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #990000;">ob_end_clean</span><span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000088;">$output</span> <span style="color: #339933;">=</span> <span style="color: #990000;">preg_match_all</span><span style="color: #009900;">&#40;</span><span style="color: #0000ff;">'/&lt;img.+src=[\'&quot;]([^\'&quot;]+)[\'&quot;].*&gt;/i'</span><span style="color: #339933;">,</span> <span style="color: #000088;">$post</span><span style="color: #339933;">-&gt;</span><span style="color: #004000;">post_content</span><span style="color: #339933;">,</span> <span style="color: #000088;">$matches</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000088;">$post_thumbnail_src</span> <span style="color: #339933;">=</span> <span style="color: #000088;">$matches</span> <span style="color: #009900;">&#91;</span><span style="color: #cc66cc;">1</span><span style="color: #009900;">&#93;</span> <span style="color: #009900;">&#91;</span><span style="color: #cc66cc;">0</span><span style="color: #009900;">&#93;</span><span style="color: #339933;">;</span>   <span style="color: #666666; font-style: italic;">//获取该图片 src</span> <span style="color: #b1b100;">if</span><span style="color: #009900;">&#40;</span><span style="color: #990000;">empty</span><span style="color: #009900;">&#40;</span><span style="color: #000088;">$post_thumbnail_src</span><span style="color: #009900;">&#41;</span><span style="color: #009900;">&#41;</span><span style="color: #009900;">&#123;</span> <span style="color: #666666; font-style: italic;">//如果日志中没有图片，则显示随机图片</span> <span style="color: #000088;">$random</span> <span style="color: #339933;">=</span> <span style="color: #990000;">mt_rand</span><span style="color: #009900;">&#40;</span><span style="color: #cc66cc;">1</span><span style="color: #339933;">,</span> <span style="color: #cc66cc;">10</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #b1b100;">echo</span> get_bloginfo<span style="color: #009900;">&#40;</span><span style="color: #0000ff;">'template_url'</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #b1b100;">echo</span> <span style="color: #0000ff;">'/images/pic/'</span><span style="color: #339933;">.</span><span style="color: #000088;">$random</span><span style="color: #339933;">.</span><span style="color: #0000ff;">'.jpg'</span><span style="color: #339933;">;</span> <span style="color: #666666; font-style: italic;">//如果日志中没有图片，则显示默认图片</span> <span style="color: #666666; font-style: italic;">//echo '/images/default_thumb.jpg';</span> <span style="color: #009900;">&#125;</span> <span style="color: #009900;">&#125;</span><span style="color: #339933;">;</span> <span style="color: #b1b100;">echo</span> <span style="color: #000088;">$post_thumbnail_src</span><span style="color: #339933;">;</span> <span style="color: #009900;">&#125;</span>

//添加特色缩略图支持
if ( function_exists(‘add_theme_support’) )add_theme_support(‘post-thumbnails’); //输出缩略图地址 From wpdaxue.com
function post_thumbnail_src(){
global $post;
if( $values = get_post_custom_values("thumb") ) { //输出自定义域图片地址
$values = get_post_custom_values("thumb");
$post_thumbnail_src = $values [0];
} elseif( has_post_thumbnail() ){ //如果有特色缩略图，则输出缩略图地址
$thumbnail_src = wp_get_attachment_image_src(get_post_thumbnail_id($post->ID),’full’);
$post_thumbnail_src = $thumbnail_src [0];
} else {
$post_thumbnail_src = ”;
ob_start();
ob_end_clean();
$output = preg_match_all(‘/<img.+src=[\’"]([^\’"]+)[\’"].*>/i’, $post->post_content, $matches);
$post_thumbnail_src = $matches [1] [0]; //获取该图片 src
if(empty($post_thumbnail_src)){ //如果日志中没有图片，则显示随机图片
$random = mt_rand(1, 10);
echo get_bloginfo(‘template_url’);
echo ‘/images/pic/’.$random.’.jpg’;
//如果日志中没有图片，则显示默认图片
//echo ‘/images/default_thumb.jpg’;
}
};
echo $post_thumbnail_src;
}

PS：上面的代码主要是获取图片链接，获取的顺序是：

自定义字段为 thumb 的图片>特色缩略图>文章第一张图片>随机图片/默认图片；

随机图片：请制作10张图片，放在现用主题文件夹下的 images/pic/ 目录，图片为jpg格式，并且使用数字 1-10命名，比如 1.jpg；如果你不想用随机图片，请将 倒数第5行 前面的“//”去掉，然后给 倒数第7、9行 前面添加“//”注销，并且在现用主题的 /images/ 目录下添加一张名字为 default_thumb.jpg 的默认图片，这样，就会显示默认图片。

2)将下面的代码添加到 single.php 要显示相关文章的位置：

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55

&lt;h3&gt;相关文章&lt;/h3&gt; &lt;ul class=&quot;related_img&quot;&gt; <span style="color: #000000; font-weight: bold;">&lt;?php</span> <span style="color: #000088;">$post_num</span> <span style="color: #339933;">=</span> <span style="color: #cc66cc;">4</span><span style="color: #339933;">;</span> <span style="color: #000088;">$exclude_id</span> <span style="color: #339933;">=</span> <span style="color: #000088;">$post</span><span style="color: #339933;">-&gt;</span><span style="color: #004000;">ID</span><span style="color: #339933;">;</span> <span style="color: #000088;">$posttags</span> <span style="color: #339933;">=</span> get_the_tags<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000088;">$i</span> <span style="color: #339933;">=</span> <span style="color: #cc66cc;">0</span><span style="color: #339933;">;</span> <span style="color: #b1b100;">if</span> <span style="color: #009900;">&#40;</span> <span style="color: #000088;">$posttags</span> <span style="color: #009900;">&#41;</span> <span style="color: #009900;">&#123;</span> <span style="color: #000088;">$tags</span> <span style="color: #339933;">=</span> <span style="color: #0000ff;">''</span><span style="color: #339933;">;</span> <span style="color: #b1b100;">foreach</span> <span style="color: #009900;">&#40;</span> <span style="color: #000088;">$posttags</span> <span style="color: #b1b100;">as</span> <span style="color: #000088;">$tag</span> <span style="color: #009900;">&#41;</span> <span style="color: #000088;">$tags</span> <span style="color: #339933;">.=</span> <span style="color: #000088;">$tag</span><span style="color: #339933;">-&gt;</span><span style="color: #004000;">term_id</span> <span style="color: #339933;">.</span> <span style="color: #0000ff;">','</span><span style="color: #339933;">;</span> <span style="color: #000088;">$args</span> <span style="color: #339933;">=</span> <span style="color: #990000;">array</span><span style="color: #009900;">&#40;</span> <span style="color: #0000ff;">'post_status'</span> <span style="color: #339933;">=&gt;</span> <span style="color: #0000ff;">'publish'</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">'tag__in'</span> <span style="color: #339933;">=&gt;</span> <span style="color: #990000;">explode</span><span style="color: #009900;">&#40;</span><span style="color: #0000ff;">','</span><span style="color: #339933;">,</span> <span style="color: #000088;">$tags</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">'post__not_in'</span> <span style="color: #339933;">=&gt;</span> <span style="color: #990000;">explode</span><span style="color: #009900;">&#40;</span><span style="color: #0000ff;">','</span><span style="color: #339933;">,</span> <span style="color: #000088;">$exclude_id</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">'caller_get_posts'</span> <span style="color: #339933;">=&gt;</span> <span style="color: #cc66cc;">1</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">'orderby'</span> <span style="color: #339933;">=&gt;</span> <span style="color: #0000ff;">'comment_date'</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">'posts_per_page'</span> <span style="color: #339933;">=&gt;</span> <span style="color: #000088;">$post_num</span> <span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> query_posts<span style="color: #009900;">&#40;</span><span style="color: #000088;">$args</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #b1b100;">while</span><span style="color: #009900;">&#40;</span> have_posts<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span> <span style="color: #009900;">&#41;</span> <span style="color: #009900;">&#123;</span> the_post<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000000; font-weight: bold;">?&gt;</span> &lt;li class=&quot;related_box&quot; &gt; &lt;div class=&quot;r_pic&quot;&gt; &lt;a href=&quot;<span style="color: #000000; font-weight: bold;">&lt;?php</span> the_permalink<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000000; font-weight: bold;">?&gt;</span>&quot; title=&quot;<span style="color: #000000; font-weight: bold;">&lt;?php</span> the_title<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000000; font-weight: bold;">?&gt;</span>&quot; target=&quot;_blank&quot;&gt; &lt;img src=&quot;<span style="color: #000000; font-weight: bold;">&lt;?php</span> <span style="color: #b1b100;">echo</span> post_thumbnail_src<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000000; font-weight: bold;">?&gt;</span>&quot; alt=&quot;<span style="color: #000000; font-weight: bold;">&lt;?php</span> the_title<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000000; font-weight: bold;">?&gt;</span>&quot; class=&quot;thumbnail&quot; /&gt; &lt;/a&gt; &lt;/div&gt; &lt;div class=&quot;r_title&quot;&gt;&lt;a href=&quot;<span style="color: #000000; font-weight: bold;">&lt;?php</span> the_permalink<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000000; font-weight: bold;">?&gt;</span>&quot; title=&quot;<span style="color: #000000; font-weight: bold;">&lt;?php</span> the_title<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000000; font-weight: bold;">?&gt;</span>&quot; target=&quot;_blank&quot; rel=&quot;bookmark&quot;&gt;<span style="color: #000000; font-weight: bold;">&lt;?php</span> the_title<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000000; font-weight: bold;">?&gt;</span>&lt;/a&gt;&lt;/div&gt; &lt;/li&gt; <span style="color: #000000; font-weight: bold;">&lt;?php</span> <span style="color: #000088;">$exclude_id</span> <span style="color: #339933;">.=</span> <span style="color: #0000ff;">','</span> <span style="color: #339933;">.</span> <span style="color: #000088;">$post</span><span style="color: #339933;">-&gt;</span><span style="color: #004000;">ID</span><span style="color: #339933;">;</span> <span style="color: #000088;">$i</span> <span style="color: #339933;">++;</span> <span style="color: #009900;">&#125;</span> wp_reset_query<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #009900;">&#125;</span> <span style="color: #b1b100;">if</span> <span style="color: #009900;">&#40;</span> <span style="color: #000088;">$i</span> <span style="color: #339933;">&lt;</span> <span style="color: #000088;">$post_num</span> <span style="color: #009900;">&#41;</span> <span style="color: #009900;">&#123;</span> <span style="color: #000088;">$cats</span> <span style="color: #339933;">=</span> <span style="color: #0000ff;">''</span><span style="color: #339933;">;</span> <span style="color: #b1b100;">foreach</span> <span style="color: #009900;">&#40;</span> get_the_category<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span> <span style="color: #b1b100;">as</span> <span style="color: #000088;">$cat</span> <span style="color: #009900;">&#41;</span> <span style="color: #000088;">$cats</span> <span style="color: #339933;">.=</span> <span style="color: #000088;">$cat</span><span style="color: #339933;">-&gt;</span><span style="color: #004000;">cat_ID</span> <span style="color: #339933;">.</span> <span style="color: #0000ff;">','</span><span style="color: #339933;">;</span> <span style="color: #000088;">$args</span> <span style="color: #339933;">=</span> <span style="color: #990000;">array</span><span style="color: #009900;">&#40;</span> <span style="color: #0000ff;">'category__in'</span> <span style="color: #339933;">=&gt;</span> <span style="color: #990000;">explode</span><span style="color: #009900;">&#40;</span><span style="color: #0000ff;">','</span><span style="color: #339933;">,</span> <span style="color: #000088;">$cats</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">'post__not_in'</span> <span style="color: #339933;">=&gt;</span> <span style="color: #990000;">explode</span><span style="color: #009900;">&#40;</span><span style="color: #0000ff;">','</span><span style="color: #339933;">,</span> <span style="color: #000088;">$exclude_id</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">'caller_get_posts'</span> <span style="color: #339933;">=&gt;</span> <span style="color: #cc66cc;">1</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">'orderby'</span> <span style="color: #339933;">=&gt;</span> <span style="color: #0000ff;">'comment_date'</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">'posts_per_page'</span> <span style="color: #339933;">=&gt;</span> <span style="color: #000088;">$post_num</span> <span style="color: #339933;">-</span> <span style="color: #000088;">$i</span> <span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> query_posts<span style="color: #009900;">&#40;</span><span style="color: #000088;">$args</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #b1b100;">while</span><span style="color: #009900;">&#40;</span> have_posts<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span> <span style="color: #009900;">&#41;</span> <span style="color: #009900;">&#123;</span> the_post<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000000; font-weight: bold;">?&gt;</span> &lt;li class=&quot;related_box&quot; &gt; &lt;div class=&quot;r_pic&quot;&gt; &lt;a href=&quot;<span style="color: #000000; font-weight: bold;">&lt;?php</span> the_permalink<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000000; font-weight: bold;">?&gt;</span>&quot; title=&quot;<span style="color: #000000; font-weight: bold;">&lt;?php</span> the_title<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000000; font-weight: bold;">?&gt;</span>&quot; target=&quot;_blank&quot;&gt; &lt;img src=&quot;<span style="color: #000000; font-weight: bold;">&lt;?php</span> <span style="color: #b1b100;">echo</span> post_thumbnail_src<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000000; font-weight: bold;">?&gt;</span>&quot; alt=&quot;<span style="color: #000000; font-weight: bold;">&lt;?php</span> the_title<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000000; font-weight: bold;">?&gt;</span>&quot; class=&quot;thumbnail&quot; /&gt; &lt;/a&gt; &lt;/div&gt; &lt;div class=&quot;r_title&quot;&gt;&lt;a href=&quot;<span style="color: #000000; font-weight: bold;">&lt;?php</span> the_permalink<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000000; font-weight: bold;">?&gt;</span>&quot; title=&quot;<span style="color: #000000; font-weight: bold;">&lt;?php</span> the_title<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000000; font-weight: bold;">?&gt;</span>&quot; target=&quot;_blank&quot; rel=&quot;bookmark&quot;&gt;<span style="color: #000000; font-weight: bold;">&lt;?php</span> the_title<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000000; font-weight: bold;">?&gt;</span>&lt;/a&gt;&lt;/div&gt; &lt;/li&gt; <span style="color: #000000; font-weight: bold;">&lt;?php</span> <span style="color: #000088;">$i</span><span style="color: #339933;">++;</span> <span style="color: #009900;">&#125;</span> wp_reset_query<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #009900;">&#125;</span> <span style="color: #b1b100;">if</span> <span style="color: #009900;">&#40;</span> <span style="color: #000088;">$i</span> <span style="color: #339933;">==</span> <span style="color: #cc66cc;">0</span> <span style="color: #009900;">&#41;</span> <span style="color: #b1b100;">echo</span> <span style="color: #0000ff;">'&lt;div class=&quot;r_title&quot;&gt;没有相关文章!&lt;/div&gt;'</span><span style="color: #339933;">;</span> <span style="color: #000000; font-weight: bold;">?&gt;</span> &lt;/ul&gt; 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 &lt;h3&gt;相关文章&lt;/h3&gt; &lt;ul class=&quot;related_img&quot;&gt; <span style="color: #000000; font-weight: bold;">&lt;?php</span> <span style="color: #000088;">$post_num</span> <span style="color: #339933;">=</span> <span style="color: #cc66cc;">4</span><span style="color: #339933;">;</span> <span style="color: #000088;">$exclude_id</span> <span style="color: #339933;">=</span> <span style="color: #000088;">$post</span><span style="color: #339933;">-&gt;</span><span style="color: #004000;">ID</span><span style="color: #339933;">;</span> <span style="color: #000088;">$posttags</span> <span style="color: #339933;">=</span> get_the_tags<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000088;">$i</span> <span style="color: #339933;">=</span> <span style="color: #cc66cc;">0</span><span style="color: #339933;">;</span> <span style="color: #b1b100;">if</span> <span style="color: #009900;">&#40;</span> <span style="color: #000088;">$posttags</span> <span style="color: #009900;">&#41;</span> <span style="color: #009900;">&#123;</span> <span style="color: #000088;">$tags</span> <span style="color: #339933;">=</span> <span style="color: #0000ff;">''</span><span style="color: #339933;">;</span> <span style="color: #b1b100;">foreach</span> <span style="color: #009900;">&#40;</span> <span style="color: #000088;">$posttags</span> <span style="color: #b1b100;">as</span> <span style="color: #000088;">$tag</span> <span style="color: #009900;">&#41;</span> <span style="color: #000088;">$tags</span> <span style="color: #339933;">.=</span> <span style="color: #000088;">$tag</span><span style="color: #339933;">-&gt;</span><span style="color: #004000;">term_id</span> <span style="color: #339933;">.</span> <span style="color: #0000ff;">','</span><span style="color: #339933;">;</span> <span style="color: #000088;">$args</span> <span style="color: #339933;">=</span> <span style="color: #990000;">array</span><span style="color: #009900;">&#40;</span> <span style="color: #0000ff;">'post_status'</span> <span style="color: #339933;">=&gt;</span> <span style="color: #0000ff;">'publish'</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">'tag__in'</span> <span style="color: #339933;">=&gt;</span> <span style="color: #990000;">explode</span><span style="color: #009900;">&#40;</span><span style="color: #0000ff;">','</span><span style="color: #339933;">,</span> <span style="color: #000088;">$tags</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">'post__not_in'</span> <span style="color: #339933;">=&gt;</span> <span style="color: #990000;">explode</span><span style="color: #009900;">&#40;</span><span style="color: #0000ff;">','</span><span style="color: #339933;">,</span> <span style="color: #000088;">$exclude_id</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">'caller_get_posts'</span> <span style="color: #339933;">=&gt;</span> <span style="color: #cc66cc;">1</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">'orderby'</span> <span style="color: #339933;">=&gt;</span> <span style="color: #0000ff;">'comment_date'</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">'posts_per_page'</span> <span style="color: #339933;">=&gt;</span> <span style="color: #000088;">$post_num</span> <span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> query_posts<span style="color: #009900;">&#40;</span><span style="color: #000088;">$args</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #b1b100;">while</span><span style="color: #009900;">&#40;</span> have_posts<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span> <span style="color: #009900;">&#41;</span> <span style="color: #009900;">&#123;</span> the_post<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000000; font-weight: bold;">?&gt;</span> &lt;li class=&quot;related_box&quot;  &gt; &lt;div class=&quot;r_pic&quot;&gt; &lt;a href=&quot;<span style="color: #000000; font-weight: bold;">&lt;?php</span> the_permalink<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000000; font-weight: bold;">?&gt;</span>&quot; title=&quot;<span style="color: #000000; font-weight: bold;">&lt;?php</span> the_title<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000000; font-weight: bold;">?&gt;</span>&quot; target=&quot;_blank&quot;&gt; &lt;img src=&quot;<span style="color: #000000; font-weight: bold;">&lt;?php</span> <span style="color: #b1b100;">echo</span> post_thumbnail_src<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000000; font-weight: bold;">?&gt;</span>&quot; alt=&quot;<span style="color: #000000; font-weight: bold;">&lt;?php</span> the_title<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000000; font-weight: bold;">?&gt;</span>&quot; class=&quot;thumbnail&quot; /&gt; &lt;/a&gt; &lt;/div&gt; &lt;div class=&quot;r_title&quot;&gt;&lt;a href=&quot;<span style="color: #000000; font-weight: bold;">&lt;?php</span> the_permalink<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000000; font-weight: bold;">?&gt;</span>&quot; title=&quot;<span style="color: #000000; font-weight: bold;">&lt;?php</span> the_title<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000000; font-weight: bold;">?&gt;</span>&quot; target=&quot;_blank&quot; rel=&quot;bookmark&quot;&gt;<span style="color: #000000; font-weight: bold;">&lt;?php</span> the_title<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000000; font-weight: bold;">?&gt;</span>&lt;/a&gt;&lt;/div&gt; &lt;/li&gt; <span style="color: #000000; font-weight: bold;">&lt;?php</span> <span style="color: #000088;">$exclude_id</span> <span style="color: #339933;">.=</span> <span style="color: #0000ff;">','</span> <span style="color: #339933;">.</span> <span style="color: #000088;">$post</span><span style="color: #339933;">-&gt;</span><span style="color: #004000;">ID</span><span style="color: #339933;">;</span> <span style="color: #000088;">$i</span> <span style="color: #339933;">++;</span> <span style="color: #009900;">&#125;</span> wp_reset_query<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #009900;">&#125;</span> <span style="color: #b1b100;">if</span> <span style="color: #009900;">&#40;</span> <span style="color: #000088;">$i</span> <span style="color: #339933;">&lt;</span> <span style="color: #000088;">$post_num</span> <span style="color: #009900;">&#41;</span> <span style="color: #009900;">&#123;</span> <span style="color: #000088;">$cats</span> <span style="color: #339933;">=</span> <span style="color: #0000ff;">''</span><span style="color: #339933;">;</span> <span style="color: #b1b100;">foreach</span> <span style="color: #009900;">&#40;</span> get_the_category<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span> <span style="color: #b1b100;">as</span> <span style="color: #000088;">$cat</span> <span style="color: #009900;">&#41;</span> <span style="color: #000088;">$cats</span> <span style="color: #339933;">.=</span> <span style="color: #000088;">$cat</span><span style="color: #339933;">-&gt;</span><span style="color: #004000;">cat_ID</span> <span style="color: #339933;">.</span> <span style="color: #0000ff;">','</span><span style="color: #339933;">;</span> <span style="color: #000088;">$args</span> <span style="color: #339933;">=</span> <span style="color: #990000;">array</span><span style="color: #009900;">&#40;</span> <span style="color: #0000ff;">'category__in'</span> <span style="color: #339933;">=&gt;</span> <span style="color: #990000;">explode</span><span style="color: #009900;">&#40;</span><span style="color: #0000ff;">','</span><span style="color: #339933;">,</span> <span style="color: #000088;">$cats</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">'post__not_in'</span> <span style="color: #339933;">=&gt;</span> <span style="color: #990000;">explode</span><span style="color: #009900;">&#40;</span><span style="color: #0000ff;">','</span><span style="color: #339933;">,</span> <span style="color: #000088;">$exclude_id</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">'caller_get_posts'</span> <span style="color: #339933;">=&gt;</span> <span style="color: #cc66cc;">1</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">'orderby'</span> <span style="color: #339933;">=&gt;</span> <span style="color: #0000ff;">'comment_date'</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">'posts_per_page'</span> <span style="color: #339933;">=&gt;</span> <span style="color: #000088;">$post_num</span> <span style="color: #339933;">-</span> <span style="color: #000088;">$i</span> <span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> query_posts<span style="color: #009900;">&#40;</span><span style="color: #000088;">$args</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #b1b100;">while</span><span style="color: #009900;">&#40;</span> have_posts<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span> <span style="color: #009900;">&#41;</span> <span style="color: #009900;">&#123;</span> the_post<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000000; font-weight: bold;">?&gt;</span> &lt;li class=&quot;related_box&quot;  &gt; &lt;div class=&quot;r_pic&quot;&gt; &lt;a href=&quot;<span style="color: #000000; font-weight: bold;">&lt;?php</span> the_permalink<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000000; font-weight: bold;">?&gt;</span>&quot; title=&quot;<span style="color: #000000; font-weight: bold;">&lt;?php</span> the_title<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000000; font-weight: bold;">?&gt;</span>&quot; target=&quot;_blank&quot;&gt; &lt;img src=&quot;<span style="color: #000000; font-weight: bold;">&lt;?php</span> <span style="color: #b1b100;">echo</span> post_thumbnail_src<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000000; font-weight: bold;">?&gt;</span>&quot; alt=&quot;<span style="color: #000000; font-weight: bold;">&lt;?php</span> the_title<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000000; font-weight: bold;">?&gt;</span>&quot; class=&quot;thumbnail&quot; /&gt; &lt;/a&gt; &lt;/div&gt; &lt;div class=&quot;r_title&quot;&gt;&lt;a href=&quot;<span style="color: #000000; font-weight: bold;">&lt;?php</span> the_permalink<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000000; font-weight: bold;">?&gt;</span>&quot; title=&quot;<span style="color: #000000; font-weight: bold;">&lt;?php</span> the_title<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000000; font-weight: bold;">?&gt;</span>&quot; target=&quot;_blank&quot; rel=&quot;bookmark&quot;&gt;<span style="color: #000000; font-weight: bold;">&lt;?php</span> the_title<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #000000; font-weight: bold;">?&gt;</span>&lt;/a&gt;&lt;/div&gt; &lt;/li&gt; <span style="color: #000000; font-weight: bold;">&lt;?php</span> <span style="color: #000088;">$i</span><span style="color: #339933;">++;</span> <span style="color: #009900;">&#125;</span> wp_reset_query<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #009900;">&#125;</span> <span style="color: #b1b100;">if</span> <span style="color: #009900;">&#40;</span> <span style="color: #000088;">$i</span>  <span style="color: #339933;">==</span> <span style="color: #cc66cc;">0</span> <span style="color: #009900;">&#41;</span>  <span style="color: #b1b100;">echo</span> <span style="color: #0000ff;">'&lt;div class=&quot;r_title&quot;&gt;没有相关文章!&lt;/div&gt;'</span><span style="color: #339933;">;</span> <span style="color: #000000; font-weight: bold;">?&gt;</span> &lt;/ul&gt;

<h3>相关文章</h3>
<ul class="related_img">
<?php
$post_num = 4;
$exclude_id = $post->ID;
$posttags = get_the_tags(); $i = 0;
if ( $posttags ) {
$tags = ”; foreach ( $posttags as $tag ) $tags .= $tag->term_id . ‘,’;
$args = array(
‘post_status’ => ‘publish’,
‘tag__in’ => explode(‘,’, $tags),
‘post__not_in’ => explode(‘,’, $exclude_id),
‘caller_get_posts’ => 1,
‘orderby’ => ‘comment_date’,
‘posts_per_page’ => $post_num
);
query_posts($args);
while( have_posts() ) { the_post(); ?>
<li class="related_box" >
<div class="r_pic">
<a href="<?php the_permalink(); ?>" title="<?php the_title(); ?>" target="_blank">
<img src="<?php echo post_thumbnail_src(); ?>" alt="<?php the_title(); ?>" class="thumbnail" />
</a>
</div>
<div class="r_title"><a href="<?php the_permalink(); ?>" title="<?php the_title(); ?>" target="_blank" rel="bookmark"><?php the_title(); ?></a></div>
</li>
<?php
$exclude_id .= ‘,’ . $post->ID; $i ++;
} wp_reset_query();
}
if ( $i < $post_num ) {
$cats = ”; foreach ( get_the_category() as $cat ) $cats .= $cat->cat_ID . ‘,’;
$args = array(
‘category__in’ => explode(‘,’, $cats),
‘post__not_in’ => explode(‘,’, $exclude_id),
‘caller_get_posts’ => 1,
‘orderby’ => ‘comment_date’,
‘posts_per_page’ => $post_num – $i
);
query_posts($args);
while( have_posts() ) { the_post(); ?>
<li class="related_box" >
<div class="r_pic">
<a href="<?php the_permalink(); ?>" title="<?php the_title(); ?>" target="_blank">
<img src="<?php echo post_thumbnail_src(); ?>" alt="<?php the_title(); ?>" class="thumbnail" />
</a>
</div>
<div class="r_title"><a href="<?php the_permalink(); ?>" title="<?php the_title(); ?>" target="_blank" rel="bookmark"><?php the_title(); ?></a></div>
</li>
<?php $i++;
} wp_reset_query();
}
if ( $i == 0 ) echo ‘<div class="r_title">没有相关文章!</div>’;
?>
</ul>

PS：第四行$post_num = 4; 表示调用4篇文章，请根据自己需要修改。

css样式自己写，也可参考一下：

1 2 3 4 5 6 7 1 2 3 4 5 6 7 1 2 3 4 5 6 7

<span style="color: #6666ff;">.related_posts</span><span style="color: #00AA00;">&#123;</span><span style="color: #000000; font-weight: bold;">margin-top</span><span style="color: #00AA00;">:</span><span style="color: #933;">5px</span><span style="color: #00AA00;">;</span><span style="color: #00AA00;">&#125;</span> <span style="color: #6666ff;">.related_img</span><span style="color: #00AA00;">&#123;</span><span style="color: #000000; font-weight: bold;">width</span><span style="color: #00AA00;">:</span><span style="color: #933;">600px</span><span style="color: #00AA00;">;</span><span style="color: #000000; font-weight: bold;">height</span><span style="color: #00AA00;">:</span><span style="color: #933;">210px</span><span style="color: #00AA00;">;</span><span style="color: #00AA00;">&#125;</span> <span style="color: #6666ff;">.related_box</span><span style="color: #00AA00;">&#123;</span><span style="color: #000000; font-weight: bold;">float</span><span style="color: #00AA00;">:</span><span style="color: #993333;">left</span><span style="color: #00AA00;">;</span><span style="color: #000000; font-weight: bold;">overflow</span><span style="color: #00AA00;">:</span><span style="color: #993333;">hidden</span><span style="color: #00AA00;">;</span><span style="color: #000000; font-weight: bold;">margin-top</span><span style="color: #00AA00;">:</span><span style="color: #933;">5px</span><span style="color: #00AA00;">;</span><span style="color: #000000; font-weight: bold;">width</span><span style="color: #00AA00;">:</span><span style="color: #933;">148px</span><span style="color: #00AA00;">;</span><span style="color: #000000; font-weight: bold;">border-right</span><span style="color: #00AA00;">:</span><span style="color: #933;">1px</span> <span style="color: #cc00cc;">#eee</span> <span style="color: #993333;">solid</span><span style="color: #00AA00;">&#125;</span> <span style="color: #6666ff;">.related_box</span><span style="color: #00AA00;">:</span><span style="color: #F5758F;">hover</span><span style="color: #00AA00;">&#123;</span><span style="color: #000000; font-weight: bold;">background</span><span style="color: #00AA00;">:</span><span style="color: #cc00cc;">#f9f9f9</span><span style="color: #00AA00;">&#125;</span> <span style="color: #6666ff;">.related_box</span> <span style="color: #6666ff;">.r_title</span><span style="color: #00AA00;">&#123;</span><span style="color: #000000; font-weight: bold;">width</span><span style="color: #00AA00;">:</span><span style="color: #993333;">auto</span><span style="color: #00AA00;">;</span><span style="color: #000000; font-weight: bold;">height</span><span style="color: #00AA00;">:</span><span style="color: #933;">72px</span><span style="color: #00AA00;">;</span><span style="color: #000000; font-weight: bold;">font-weight</span><span style="color: #00AA00;">:</span><span style="color: #cc66cc;">400</span><span style="color: #00AA00;">;</span><span style="color: #000000; font-weight: bold;">font-size</span><span style="color: #00AA00;">:</span><span style="color: #933;">14px</span><span style="color: #00AA00;">;</span><span style="color: #000000; font-weight: bold;">margin</span><span style="color: #00AA00;">:</span><span style="color: #cc66cc;">0</span> <span style="color: #933;">10px</span><span style="color: #00AA00;">;</span><span style="color: #000000; font-weight: bold;">overflow</span><span style="color: #00AA00;">:</span><span style="color: #993333;">hidden</span><span style="color: #00AA00;">;</span><span style="color: #00AA00;">&#125;</span> <span style="color: #6666ff;">.related_box</span> <span style="color: #6666ff;">.r_pic</span><span style="color: #00AA00;">&#123;</span><span style="color: #000000; font-weight: bold;">margin</span><span style="color: #00AA00;">:</span><span style="color: #933;">6px</span><span style="color: #00AA00;">&#125;</span> <span style="color: #6666ff;">.related_box</span> <span style="color: #6666ff;">.r_pic</span> img<span style="color: #00AA00;">&#123;</span><span style="color: #000000; font-weight: bold;">width</span><span style="color: #00AA00;">:</span><span style="color: #933;">130px</span><span style="color: #00AA00;">;</span><span style="color: #000000; font-weight: bold;">height</span><span style="color: #00AA00;">:</span><span style="color: #933;">100px</span><span style="color: #00AA00;">;</span><span style="color: #000000; font-weight: bold;">border</span><span style="color: #00AA00;">:</span><span style="color: #933;">1px</span> <span style="color: #993333;">solid</span> <span style="color: #cc00cc;">#e1e1e1</span><span style="color: #00AA00;">;</span><span style="color: #000000; font-weight: bold;">background</span><span style="color: #00AA00;">:</span><span style="color: #cc00cc;">#fff</span><span style="color: #00AA00;">;</span><span style="color: #000000; font-weight: bold;">padding</span><span style="color: #00AA00;">:</span><span style="color: #933;">2px</span><span style="color: #00AA00;">&#125;</span> 1 2 3 4 5 6 7 <span style="color: #6666ff;">.related_posts</span><span style="color: #00AA00;">&#123;</span><span style="color: #000000; font-weight: bold;">margin-top</span><span style="color: #00AA00;">:</span><span style="color: #933;">5px</span><span style="color: #00AA00;">;</span><span style="color: #00AA00;">&#125;</span> <span style="color: #6666ff;">.related_img</span><span style="color: #00AA00;">&#123;</span><span style="color: #000000; font-weight: bold;">width</span><span style="color: #00AA00;">:</span><span style="color: #933;">600px</span><span style="color: #00AA00;">;</span><span style="color: #000000; font-weight: bold;">height</span><span style="color: #00AA00;">:</span><span style="color: #933;">210px</span><span style="color: #00AA00;">;</span><span style="color: #00AA00;">&#125;</span> <span style="color: #6666ff;">.related_box</span><span style="color: #00AA00;">&#123;</span><span style="color: #000000; font-weight: bold;">float</span><span style="color: #00AA00;">:</span><span style="color: #993333;">left</span><span style="color: #00AA00;">;</span><span style="color: #000000; font-weight: bold;">overflow</span><span style="color: #00AA00;">:</span><span style="color: #993333;">hidden</span><span style="color: #00AA00;">;</span><span style="color: #000000; font-weight: bold;">margin-top</span><span style="color: #00AA00;">:</span><span style="color: #933;">5px</span><span style="color: #00AA00;">;</span><span style="color: #000000; font-weight: bold;">width</span><span style="color: #00AA00;">:</span><span style="color: #933;">148px</span><span style="color: #00AA00;">;</span><span style="color: #000000; font-weight: bold;">border-right</span><span style="color: #00AA00;">:</span><span style="color: #933;">1px</span> <span style="color: #cc00cc;">#eee</span> <span style="color: #993333;">solid</span><span style="color: #00AA00;">&#125;</span> <span style="color: #6666ff;">.related_box</span><span style="color: #00AA00;">:</span><span style="color: #F5758F;">hover</span><span style="color: #00AA00;">&#123;</span><span style="color: #000000; font-weight: bold;">background</span><span style="color: #00AA00;">:</span><span style="color: #cc00cc;">#f9f9f9</span><span style="color: #00AA00;">&#125;</span> <span style="color: #6666ff;">.related_box</span> <span style="color: #6666ff;">.r_title</span><span style="color: #00AA00;">&#123;</span><span style="color: #000000; font-weight: bold;">width</span><span style="color: #00AA00;">:</span><span style="color: #993333;">auto</span><span style="color: #00AA00;">;</span><span style="color: #000000; font-weight: bold;">height</span><span style="color: #00AA00;">:</span><span style="color: #933;">72px</span><span style="color: #00AA00;">;</span><span style="color: #000000; font-weight: bold;">font-weight</span><span style="color: #00AA00;">:</span><span style="color: #cc66cc;">400</span><span style="color: #00AA00;">;</span><span style="color: #000000; font-weight: bold;">font-size</span><span style="color: #00AA00;">:</span><span style="color: #933;">14px</span><span style="color: #00AA00;">;</span><span style="color: #000000; font-weight: bold;">margin</span><span style="color: #00AA00;">:</span><span style="color: #cc66cc;">0</span> <span style="color: #933;">10px</span><span style="color: #00AA00;">;</span><span style="color: #000000; font-weight: bold;">overflow</span><span style="color: #00AA00;">:</span><span style="color: #993333;">hidden</span><span style="color: #00AA00;">;</span><span style="color: #00AA00;">&#125;</span> <span style="color: #6666ff;">.related_box</span> <span style="color: #6666ff;">.r_pic</span><span style="color: #00AA00;">&#123;</span><span style="color: #000000; font-weight: bold;">margin</span><span style="color: #00AA00;">:</span><span style="color: #933;">6px</span><span style="color: #00AA00;">&#125;</span> <span style="color: #6666ff;">.related_box</span> <span style="color: #6666ff;">.r_pic</span> img<span style="color: #00AA00;">&#123;</span><span style="color: #000000; font-weight: bold;">width</span><span style="color: #00AA00;">:</span><span style="color: #933;">130px</span><span style="color: #00AA00;">;</span><span style="color: #000000; font-weight: bold;">height</span><span style="color: #00AA00;">:</span><span style="color: #933;">100px</span><span style="color: #00AA00;">;</span><span style="color: #000000; font-weight: bold;">border</span><span style="color: #00AA00;">:</span><span style="color: #933;">1px</span>  <span style="color: #993333;">solid</span> <span style="color: #cc00cc;">#e1e1e1</span><span style="color: #00AA00;">;</span><span style="color: #000000; font-weight: bold;">background</span><span style="color: #00AA00;">:</span><span style="color: #cc00cc;">#fff</span><span style="color: #00AA00;">;</span><span style="color: #000000; font-weight: bold;">padding</span><span style="color: #00AA00;">:</span><span style="color: #933;">2px</span><span style="color: #00AA00;">&#125;</span>

.related_posts{margin-top:5px;}
.related_img{width:600px;height:210px;}
.related_box{float:left;overflow:hidden;margin-top:5px;width:148px;border-right:1px #eee solid}
.related_box:hover{background:#f9f9f9}
.related_box .r_title{width:auto;height:72px;font-weight:400;font-size:14px;margin:0 10px;overflow:hidden;}
.related_box .r_pic{margin:6px}
.related_box .r_pic img{width:130px;height:100px;border:1px solid #e1e1e1;background:#fff;padding:2px}

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