让wordpress只搜索文章的标题

用文本编辑器打开wp-includes/query.php，
先将$search .= "{$searchand}(($wpdb->posts.post_title LIKE '{$n}{$term}{$n}') OR ($wpdb->posts.post_content LIKE '{$n}{$term}{$n}'))";
替换成
$search .= "{$searchand}(($wpdb->posts.post_title LIKE '{$n}{$term}{$n}'))";

http://mugen.weboy.org/wordpress-only-search-the-title.html