'name', 'parent' => 0 ) ); $do_not_duplicate = array(); foreach ( $categories as $category ) { $args = array( 'cat' => $category->term_id, 'orderby' =>'post_date', 'order' => 'DESC', 'post_type' => 'post', 'posts_per_page' => '1', );$query = new WP_Query( $args ); if ( $query->have_posts() ) { $posttype = get_post_type(get_the_ID());?> have_posts() ) { $query->the_post(); $do_not_duplicate[] = $post->ID; ?>