ID, 'the-newsmag-featured-small-thumbnail'); } else { $prev_thumb_image = ''; } // function to retrieve next post $next_post = get_next_post(); if ($next_post) { $next_thumb_image = get_the_post_thumbnail($next_post->ID, 'the-newsmag-featured-small-thumbnail'); } else { $next_thumb_image = ''; } the_post_navigation(array( 'next_text' => '' . $next_thumb_image . '' . '' . esc_html__('Next Post', 'the-newsmag') . ' ' . '' . esc_html__('Next post:', 'the-newsmag') . ' ' . '%title', 'prev_text' => '' . $prev_thumb_image . '' . '' . esc_html__('Previous Post', 'the-newsmag') . ' ' . '' . esc_html__('Previous post:', 'the-newsmag') . ' ' . '%title', )); ?>