WordPress添加侧栏随机文章小工具教程

WordPress添加侧栏随机文章小工具教程,这个功能对seo来说是个好事,对用户来说,好的文章的展现机会更大,今天风酷seo免费分享为WP主题添加随机文章小工具方法:

首先找到主题的functions.php在?>之前添加如下代码并上传覆盖到主题目录:

WordPress添加侧栏随机文章小工具教程

//随机文章
class RandomPostWidget extends WP_Widget
{
 function RandomPostWidget()
 {
 parent::WP_Widget('bd_random_post_widget', '随机文章', array('description' => '我的随机文章小工具') );
 }
 function widget($args, $instance)
 {
 extract( $args );
 $title = apply_filters('widget_title',empty($instance['title']) ? '随机文章' :
 $instance['title'], $instance, $this->id_base);
 if ( empty( $instance['number'] ) || ! $number = absint( $instance['number'] ) )
 {
 $number = 10;
 }
 $r = new WP_Query(array('posts_per_page' => $number, 'no_found_rows' => true,'post_status' => 'publish', 'ignore_sticky_posts' => true, 'orderby' =>'rand'));
 if ($r->have_posts())
 {
 echo $before_widget;
 if ( $title ) echo $before_title . $title . $after_title;
?>
 <ul>
 <?php while ($r->have_posts()) : $r->the_post(); ?>
 <li>
 <a href="<?php the_permalink() ?>" title="<?php echo esc_attr(get_the_title() ? get_the_title() : get_the_ID()); ?>"><?php if ( get_the_title() ) the_title(); else the_ID(); ?></a>
 </li>
 <?php endwhile; ?>
 </ul>
 <?php
 echo $after_widget;
 wp_reset_postdata();
 }
 }
function update($new_instance, $old_instance)
{
 $instance = $old_instance;
 $instance['title'] = strip_tags($new_instance['title']);
 $instance['number'] = (int) $new_instance['number'];
 return $instance;
}
function form($instance)
{
 $title = isset($instance['title']) ? esc_attr($instance['title']) : '';
 $number = isset($instance['number']) ? absint($instance['number']) : 10;?>
 <p><label for="<?php echo $this->get_field_id('title'); ?>"><?php _e('Title:'); ?></label>
 <input id="<?php echo $this->get_field_id('title'); ?>" name="<?php echo $this->get_field_name('title'); ?>" type="text" value="<?php echo $title; ?>" /></p>
 
 <p><label for="<?php echo $this->get_field_id('number'); ?>"><?php _e('文章显示数量:'); ?></label>
 <input id="<?php echo $this->get_field_id('number'); ?>" name="<?php echo $this->get_field_name('number'); ?>" type="text" value="<?php echo $number; ?>" size="3" /></p>
<?php
}
}
add_action('widgets_init', create_function('', 'return register_widget("RandomPostWidget");'));

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