Related Posts in WordPress Themes — a practical guide to WordPress related posts with clear examples you can reuse in real projects.
WordPress Theme Development Series (63/96). Prefer one article? Read the complete WordPress theme development tutorial.
Short description
Query by shared terms, exclude the current post, and limit results for performance.
Related by category
$cats = wp_get_post_categories(get_the_ID());
$related = new WP_Query([
'category__in' => $cats,
'post__not_in' => [get_the_ID()],
'posts_per_page' => 3,
]);