Limit the SearchWP results to three specific posts

gistfile1.php

<?php
 
function my_searchwp_include_three_posts( $ids, $engine, $terms ) {
  // make sure searches are limited to posts 134, 188, and 189
  return array( 134, 188, 189 );
}
 
add_filter( 'searchwp_include', 'my_searchwp_include_three_posts', 10, 3 );