五个wordpress调用随机文章的方法

　　分享几个WordPress不用插件调用随机文章的方法，不仅增强用户粘性，而且当蜘蛛来爬你的文章的时候每次都会有变化，搜索引擎很喜欢。主要用到的是orderby rand参数，下面就随ytkah一起来看看吧

　　1、最直接的用法，在需要的位置放入下面的代码。

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<?php $args = array( 'numberposts' => 5, 'orderby' => 'rand', 'post_status' => 'publish' ); $rand_posts = get_posts( $args ); foreach( $rand_posts as $post ) : ?>     <li><a href="<?php the_permalink(); ?>"><?php the_title(); ?></a></li> <?php endforeach; ?>

　　2、用query_posts生成随机文章列表

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<?php query_posts(array('orderby' => 'rand', 'showposts' => 2)); if (have_posts()) :     while (have_posts()) : the_post();?>         <a href="<?php the_permalink() ?>" rel="bookmark"><?php the_title(); ?></a>     <?php endwhile; ?> <?php endif; ?>

　　

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<?php query_posts(array('orderby' => 'rand', 'showposts' => 1)); if (have_posts()) : while (have_posts()) : the_post(); the_title(); //这行去掉就不显示标题 the_excerpt(); //去掉这个就不显示摘要了 endwhile; endif; ?>

　　3、调用同分类随机文章

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<?php $cat = get_the_category(); foreach($cat as $key=>$category){ $catid = $category->term_id; } $args = array('orderby' => 'rand','showposts' => 8,'cat' => $catid ); $query_posts = new WP_Query(); $query_posts->query($args); while ($query_posts->have_posts()) : $query_posts->the_post(); ?> <li><a href="<?php the_permalink(); ?>"><?php the_title(); ?></a></li> <?php endwhile;?> <?php wp_reset_query(); ?>

　　4、用wp_query函数

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<?php                     $args = array(                         'post_type' => 'post',                         'showposts' => 4,                         'orderby' => 'rand',                         'cat' => -36,//除了id为36的分类                     );                     $my_query = new WP_Query($args);                     if( $my_query->have_posts() ) {                         while ($my_query->have_posts()) : $my_query->the_post(); ?>                             <div class="item">                                 <a href="<?php the_permalink(); ?>" class="box">                                     <?php the_post_thumbnail( array(285,360) ); ?>                                     <div class="text">                                         <strong><?php the_title();?></strong>                                     </div>                                 </a>                             </div>                         <?php endwhile; wp_reset_query(); } ?>

　　更详细的用法请参考WordPress自定义查询WP_Query使用方法大全

　　5、主题function定义

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/**  * 随机文章  */ function random_posts($posts_num=5,$before='<li>',$after='</li>'){     global $wpdb;     $sql = "SELECT ID, post_title,guid             FROM $wpdb->posts             WHERE post_status = 'publish' ";     $sql .= "AND post_title != '' ";     $sql .= "AND post_password ='' ";     $sql .= "AND post_type = 'post' ";     $sql .= "ORDER BY RAND() LIMIT 0 , $posts_num ";     $randposts = $wpdb->get_results($sql);     $output = '';     foreach ($randposts as $randpost) {         $post_title = stripslashes($randpost->post_title);         $permalink = get_permalink($randpost->ID);         $output .= $before.'<a href="'             . $permalink . '"  rel="bookmark" title="';         $output .= $post_title . '">' . $post_title . '</a>';         $output .= $after;     }     echo $output; }

　　然后在想要显示随机文章的地方加入如下代码

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<div class="right">     <h3>随便找点看看！</h3>     <ul>         <?php random_posts(); ?>     </ul> </div><!-- 随机文章 -->