$post->post_parent, 'fields' => 'ids', 'numberposts' => -1, 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => 'ASC', 'orderby' => 'menu_order ID' ) ); wp_reset_postdata(); // If there is more than 1 attachment in a gallery... if ( count( $attachment_ids ) > 1 ) { foreach ( $attachment_ids as $attachment_id ) { if ( $attachment_id == $post->ID ) { $next_id = current( $attachment_ids ); break; } } // get the URL of the next image attachment... if ( $next_id ) $next_attachment_url = get_attachment_link( $next_id ); // or get the URL of the first image attachment. else $next_attachment_url = get_attachment_link( array_shift( $attachment_ids ) ); } printf( '%2$s', esc_url( $next_attachment_url ), wp_get_attachment_image( $post->ID, $attachment_size ) ); } endif; /** * Returns true if a blog has more than 1 category */ function car_service_categorized_blog() { if ( false === ( $car_service_all_the_cool_cats = get_transient( 'car_service_all_the_cool_cats' ) ) ) { $car_service_all_the_cool_cats = get_categories( array( 'hide_empty' => 1, ) ); $car_service_all_the_cool_cats = count( $car_service_all_the_cool_cats ); set_transient( 'car_service_all_the_cool_cats', $car_service_all_the_cool_cats ); } if ( '1' != $car_service_all_the_cool_cats ) { return true; } else { return false; } } /** * Flush out the transients used in car_service_categorized_blog */ function car_service_category_transient_flusher() { // Like, beat it. Dig? delete_transient( 'car_service_all_the_cool_cats' ); } add_action( 'edit_category', 'car_service_category_transient_flusher' ); add_action( 'save_post', 'car_service_category_transient_flusher' );