wordpress group by post type on search page -

i display search results grouped post type. have regular posts, pages, , custom post type of product. how accomplish editing below code. code below shows posts , pages right now.

<?php  while (have_posts()) : the_post();    echo "<h1>";  echo $post->post_type;  echo $post->post_title;  echo "</h1>";  endwhile;  ?> 

this code alters original search query order results post-type in order select. there other solutions, 1 found doesn't break pagination or requires multiple queries.

add_filter('posts_orderby', 'my_custom_orderby', 10, 2);  function my_custom_orderby($orderby_statement, $object) {   global $wpdb;    if (!is_search())     return $orderby_statement;    // disable filter future queries (only use filter main query in search page)   remove_filter(current_filter(), __function__);    $orderby_statement = "field(".$wpdb - > prefix.   "posts.post_type, 'post-type-c', 'post-type-example-a', 'custom-post-type-b') asc";    return $orderby_statement; }