WordPress 代码实现相关文章（列表模式）功能

<h3>Related Posts</h3> <ul> <?php $post_num = 5; // 數量設定. $exclude_id = $post->ID; // 單獨使用要開此行 //zww: edit $posttags = get_the_tags(); $i = 0; if ( $posttags ) { $tags = ''; foreach ( $posttags as $tag ) $tags .= $tag->term_id . ','; //zww: edit $args = array( 'post_status' => 'publish', 'tag__in' => explode(',', $tags), // 只選 tags 的文章. //zww: edit 'post__not_in' => explode(',', $exclude_id), // 排除已出現過的文章. 'caller_get_posts' => 1, 'orderby' => 'comment_date', // 依評論日期排序. '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(); ?>"><?php the_title(); ?></a></li> <?php $exclude_id .= ',' . $post->ID; $i ++; } wp_reset_query(); } if ( $i < $post_num ) { // 當 tags 文章數量不足, 再取 category 補足. $cats = ''; foreach ( get_the_category() as $cat ) $cats .= $cat->cat_ID . ','; $args = array( 'category__in' => explode(',', $cats), // 只選 category 的文章. '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(); ?>"><?php the_title(); ?></a></li> <?php $i++; } wp_reset_query(); } if ( $i == 0 ) echo '<li>没有相关文章!</li>'; ?> </ul>