Daniel Warren in reply to:
Exclude terms from search results

#184052

Bugger.

I think stack overflow has got me 90% of the way there though. with the following:

add_filter('posts_search', 'my_search_is_exact', 20, 2);
function my_search_is_exact($search, $wp_query){

    global $wpdb;

    if(empty($search))
        return $search;

    $q = $wp_query->query_vars;
    $n = !empty($q['exact']) ? '' : '%';

    $search = $searchand = '';

    foreach((array)$q['search_terms'] as $term) :

        $term = esc_sql(like_escape($term));

        $search.= "{$searchand}($wpdb->posts.post_title REGEXP '[[:<:]]{$term}[[:>:]]') OR ($wpdb->posts.post_content REGEXP '[[:<:]]{$term}[[:>:]]')";

        $searchand = ' AND ';

    endforeach;

    if(!empty($search)) :
        $search = " AND ({$search}) ";
        if(!is_user_logged_in())
            $search .= " AND ($wpdb->posts.post_password = '') ";
    endif;

    return $search;

}

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