McDonnell Aircraft Markings and 3-View Drawings...

function display_related_posts() { if (is_single()) { global $post; $categories = wp_get_post_categories($post->ID); if ($categories) { $args = array( 'category__in' => $categories, 'post__not_in' => array($post->ID), 'posts_per_page' => 4, 'orderby' => 'rand' ); $related_posts = new WP_Query($args); if ($related_posts->have_posts()) { echo ''; } wp_reset_postdata(); } } } add_action('wp_footer', 'display_related_posts');