[WordPress] single.php List of other articles of the author who wrote the article

gistfile1.txt

<h2>一覧</h2>
<ul>
  <?php $author_id = get_the_author_meta( 'ID' ); ?>
	<?php $posts = get_posts("author=$author_id&orderby=date&post_type=post&posts_per_page=5"); ?> 
	<?php foreach( $posts as $post ) : setup_postdata($post); ?>
		<li><a href="<?php the_permalink() ?>"><?php the_title(); ?></a></li>
	<?php endforeach; ?>
	<?php wp_reset_postdata(); ?>			
</ul>