yusi/modules/related.php

<div class="related_posts"><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"  >
		<a href="<?php the_permalink();?>" title="<?php the_title();?>" target="_blank">
<img src="<?php echo get_bloginfo("template_url") ?>/timthumb.php?src=<?php echo post_thumbnail_src();?>&h=110&w=185&q=90&zc=1&ct=1" alt="<?php the_title();?>" />	<br><span class="r_title"><?php the_title();?></span></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 class="related_box"  >
		<a href="<?php the_permalink();?>" title="<?php the_title();?>" target="_blank">
		<img src="<?php echo get_bloginfo("template_url") ?>/timthumb.php?src=<?php echo post_thumbnail_src();?>&h=110&w=185&q=90&zc=1&ct=1" alt="<?php the_title();?>" /><br><span class="r_title"><?php the_title();?></span></a>
		</li>
	<?php $i++;}wp_reset_query();}if ( $i  == 0 )  echo '<div class=\"r_title\">没有相关文章!</div>';?>
</ul>

<div class="relates">
<ul>
<?php  
$exclude_id = $post->ID;$posttags = get_the_tags();$i = 0;$limit = 8;if ( $posttags ){$tags = '';foreach ( $posttags as $tag ) $tags .= $tag->name . ',';$args = array('post_status' => 'publish','tag_slug__in' => explode(',',$tags),'post__not_in' => explode(',',$exclude_id),'caller_get_posts' => 1,'orderby' => 'comment_date','posts_per_page' => $limit
	);query_posts($args);while( have_posts() ){the_post();echo '<li><i class="fa fa-minus"></i><a href="'.get_permalink().'">',get_the_title(),'</a></li>';$exclude_id .= ',' . $post->ID;$i ++;};wp_reset_query();}if ( $i < $limit ){$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' => $limit - $i
	);query_posts($args);while( have_posts() ){the_post();echo '<li><i class="fa fa-minus"></i><a target="_blank" href="'.get_permalink().'">',get_the_title(),'</a></li>';$i ++;};wp_reset_query();}if ( $i  == 0 ){echo '<li>暂无相关文章！</li>';}?>

</ul></div></div>