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Wordpress主题中常用代码总结

2024-07-28 00:09:55   214人阅读

1. 在 Wordpress主题中显示最热文章的 PHP代码

<?php $result = $wpdb->get_results("SELECT comment_count,ID,post_title FROM 　　$wpdb->posts ORDER BY comment_count DESC LIMIT 0 , 10"); 　　foreach ($result as $post) { 　　　　setup_postdata($post); 　　　　$postid = $post->ID; 　　　　$title = $post->post_title; 　　　　$commentcount = $post->comment_count; 　　　　if ($commentcount != 0) { ?> 　　　　　　<li><a href="http://www.mamicode.com/<?php echo get_permalink($postid); ?>" title="<?php echo $title ?>"> 　　<?php echo $title ?></a> (<?php echo $commentcount ?>)</li> <?php } } ?>

2. wordpress主题–相关文章代码

<div id="newpost">  <ul>  <?php  $tags = wp_get_post_tags($post->ID);  if ($tags) {  $first_tag = $tags[0]->term_id;  $args=array(  ‘tag__in‘ => array($first_tag),  ‘post__not_in‘ => array($post->ID),  ‘showposts‘=>10,  ‘caller_get_posts‘=>1  );  $my_query = new WP_Query($args);  if( $my_query->have_posts() ) {  while ($my_query->have_posts()) : $my_query->the_post(); ?>  <li><a href="http://www.mamicode.com/<?php the_permalink() ?>" rel="bookmark" title="Permanent Link to  <?php the_title_attribute(); ?>"><?php the_title(); ?>  </a> </li>  <?php endwhile; } else {echo ‘not realate post‘;} }else {echo ‘not realate post‘;} ?>

3. Wordpress主题使用 PHP代码输出最新文章

<?php $limit = get_option(‘posts_per_page‘); $paged = (get_query_var(‘paged‘)) ? get_query_var(‘paged‘) : 1; query_posts(‘showposts=‘ . $limit=7 . ‘&paged=‘ . $paged); $wp_query->is_archive = true; $wp_query->is_home = false; ?> <?php while(have_posts()) : the_post(); if(!($first_post == $post->ID)) : ?> <ul> <li><a href="http://www.mamicode.com/<?php the_permalink() ?>" rel="bookmark" title="Permanent Link to <?php the_title_attribute(); ?>"><?php the_title(); ?></a></li> </ul> <?php endif; endwhile; ?>

4. 最新评论：

<?php global $wpdb; $sql= "SELECT DISTINCT ID, post_title, post_password, comment_ID,comment_post_ID, comment_author, comment_date_gmt, comment_approved,comment_type,comment_author_url, SUBSTRING(comment_content,1,30) AScom_excerpt FROM $wpdb->comments LEFT OUTER JOIN $wpdb->posts ON($wpdb->comments.comment_post_ID = $wpdb->posts.ID) WHEREcomment_approved = ‘1‘ AND comment_type = " AND post_password = " ORDERBY comment_date_gmt DESC LIMIT 10"; $comments = $wpdb->get_results($sql); $output = $pre_HTML; foreach ($comments as $comment) { $output.= "\n<li>". "<a href=http://www.mamicode.com/"" .get_permalink($comment->ID)."#comment-" . $comment->comment_ID ."\" title=\"on ".$comment->post_title ."\">".strip_tags($comment->comment_author)."</a>" .": ".strip_tags($comment->com_excerpt)."</li>"; } $output .= $post_HTML; echo $output; ?>

5. wordpress主题–相关文章代码

基本sql是这样：$sql = “SELECT p.ID, p.post_title, p.post_date, p.comment_count,
count(t_r.object_id) as cnt FROM $wpdb->term_taxonomy t_t, $wpdb->term_relationships
t_r, $wpdb->posts p WHERE t_t.taxonomy =’post_tag’ AND t_t.term_taxonomy_id =
t_r.term_taxonomy_id AND t_r.object_id = p.ID AND (t_t.term_id IN ($taglist)) AND
p.ID != $post->ID AND p.post_status = ‘publish’ GROUP BY t_r.object_id ORDER BY cnt
DESC, p.post_date_gmt DESC LIMIT $limit;”;
一点一点的解释：term_taxonomy 、term_relationship、posts这三张表存的什么我不多说，网上一般都可以查到，维基百科貌似都有。把他们连起来，做个 sql，注意 group by以及limit，这样就可以提取结果了$related_post = $wpdb->get_results($sql);
之前要把$taglist 做好，利用wp_get_post_tags($post->ID);可以将该篇文章的的 tag 取到一个数组中，然后再链接就可以了 最后怎么处理输出就看个人爱好了，这个功能我写的大概也就十几行，我比较喜欢简短的说，呵呵。

function related_post($limit = 10) { global $wpdb, $post; $tags = wp_get_post_tags($post->ID); $taglist = "‘" . $tags[0]->term_id. “‘”; $tagcount = count($tags); if ($tagcount > 1) { for ($i = 1; $i < $tagcount; $i++) { $taglist .= “, ‘”.$tags[$i]->term_id.”‘”; } } $sql = “SELECT p.ID, p.post_title, p.post_date, p.comment_count, count(t_r.object_id) as cnt FROM $wpdb->term_taxonomy t_t, $wpdb->term_relationships t_r, $wpdb->posts p WHERE t_t.taxonomy =’post_tag’ AND t_t.term_taxonomy_id = t_r.term_taxonomy_id AND t_r.object_id = p.ID AND (t_t.term_id IN ($taglist)) AND p.ID != $post->ID AND p.post_status = ‘publish’ GROUP BY t_r.object_id ORDER BY cnt DESC, p.post_date_gmt DESC LIMIT $limit;”; $related_post = $wpdb->get_results($sql); $output = “”; foreach ($related_post as $tmp){ $output .= 这个就看个人爱好了 } if($output == “”)$output = “No Related Post Yet”; echo $output; }

　　

 

Wordpress主题中常用代码总结


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