wordpress随机显示图片日志

Wordpress随机显示数篇日志的图片并链接到日志上，也可以显示最新的日志图片。代码如下：

<?php
$dock = new WP_Query();
$dock->query( ’showposts=6′ );
while( $dock->have_posts() ) : $dock->the_post();
?>
<li>
<a href=”<?php the_permalink() ?>” rel=”bookmark” title=”Permanent Link to <?php the_title_attribute(); ?>”>
<!–<img src=”<?php echo get_post_meta( $post->ID, “Image”, true ); ?>” width=”74px” height=”74px” alt=”<?php the_title(); ?>” /> –>

<?php if( get_post_meta($post->ID, “Image”, true) ): ?>
<img src=”<?php echo get_post_meta($post->ID, “Image”, true); ?>” width=”74px” height=”74px” alt=”<?php the_title(); ?>” />
<?php else: ?>
<img src=”http://wpjunction.com/themes/brown/wp-content/themes/Brown/images/ads-125-125.jpg” width=”74px” height=”74px” alt=”<?php the_title(); ?>” />
<?php endif; ?>
</a>

</li>
<?php
endwhile;
?>