Next Post / Prev Post ID or Slug

Hi there,

I need to retrieve the ID and/or slug of the next or previous post. I was testing some stuff out with the following code:

<?php $prev_post = get_adjacent_post( true, '', true, 'taxonomy_slug' ); ?>
			<?php if ( is_a( $prev_post, 'WP_Post' ) ) { ?>
			   <a href="<?php echo get_permalink( $prev_post->ID ); ?>"><?php echo get_the_title( $prev_post->ID ); ?></a>
			<?php } ?>

I found this here: https://codex.www.ads-software.com/Function_Reference/get_next_post

It has to be working in the single.php file, here’s an example:

<?php
/**
 * @package WordPress
 * @subpackage HTML5-Reset-WordPress-Theme
 * @since HTML5 Reset 2.0
 */
 get_header(); ?>

	<?php if (have_posts()) : while (have_posts()) : the_post(); ?>

		<article <?php $post_class() ?> id="post-<?php the_ID(); ?>">
			
			<h1 class="entry-title"><?php the_title(); ?></h1>

			<div class="entry-content">
				
				<?php the_content(); ?>

				<?php wp_link_pages(array('before' => __('Pages: ','html5reset'), 'next_or_number' => 'number')); ?>
				
				<?php the_tags( __('Tags: ','html5reset'), ', ', ''); ?>
			
				<?php posted_on(); ?>
				
				
				
			</div>
			
			<?php $prev_post = get_adjacent_post( true, '', true, 'taxonomy_slug' ); ?>
			<?php if ( is_a( $prev_post, 'WP_Post' ) ) { ?>
			   <a href="<?php echo get_permalink( $prev_post->ID ); ?>"><?php echo get_the_title( $prev_post->ID ); ?></a>
			<?php } ?>
 
		</article>

	<?php comments_template(); ?>

	<?php endwhile; endif; ?>

<?php post_navigation(); ?>

<?php get_footer(); ?>

BUT, this code does not seem to work. Can anyone show me how this code works, or another way to get the post ID and/or slug?

Kind regards,
Namteor

• This topic was modified 7 years, 11 months ago by namteor.