$series_id, 'post_type' => 'comic', 'post_status' => 'publish', 'posts_per_page' => 90, 'orderby' => 'post_date', 'order' => 'ASC', ); if ($collection_id > 0) { $args['tax_query'] = array( array( 'taxonomy' => 'collections', 'field' => 'term_id', 'terms' => $collection_id, ), ); } $comics_loop = new WP_Query($args); ?>