get_theme_mod( 'author_writer_related_post_per_page', 3 ), 'orderby' => 'rand', 'post__not_in' => array( get_the_ID() ), ); $related = wp_get_post_terms( get_the_ID(), 'category' ); $author_writer_ids = array(); foreach( $related as $term ) { $author_writer_ids[] = $term->term_id; } $author_writer_post_args['category__in'] = $author_writer_ids; $related_posts = new WP_Query( $author_writer_post_args ); if ( $related_posts->have_posts() ) : ?>