WordPress Search (Incl. tax & terms)

<?php
/*
 * Include custom taxonomies and terms in the default WordPress search
 */


function keha76_search_where($where){
  global $wpdb;
  if (is_search())
    $where .= "OR (t.name LIKE '%".get_search_query()."%' AND {$wpdb->posts}.post_status = 'publish')";
  return $where;
}

function keha76_search_join($join){
  global $wpdb;
  if (is_search())
    $join .= "LEFT JOIN {$wpdb->term_relationships} tr ON {$wpdb->posts}.ID = tr.object_id INNER JOIN {$wpdb->term_taxonomy} tt ON tt.term_taxonomy_id=tr.term_taxonomy_id INNER JOIN {$wpdb->terms} t ON t.term_id = tt.term_id";
  return $join;
}

function keha76_search_groupby($groupby){
  global $wpdb;
  $groupby_id = "{$wpdb->posts}.ID";
  if(!is_search() || strpos($groupby, $groupby_id) !== false) return $groupby;
  if(!strlen(trim($groupby))) return $groupby_id;
  return $groupby.", ".$groupby_id;
}

add_filter('posts_where','keha76_search_where');
add_filter('posts_join', 'keha76_search_join');
add_filter('posts_groupby', 'keha76_search_groupby');