WordPress默认的搜索功能，使用户搜索结果包括文章内容、文章标题与文章标签 这样搜索出来的结果不会很精确，如果你想让它搜索出来的结果更精确、相关，可以限定只搜索文章的标题。

将下面的代码添加到主题的 functiоns.php 文件即可实现：

//让WordPress只搜索文章的标题 functiоn __search_by_title_only( $search, &$wp_query ) { global $wpdb; if ( empty( $search ) ) return $search; // skip processing - no search term in query $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}($wpdb->posts.post_title LIKE \'{$n}{$term}{$n}\')\"; $searchand = \' AND \'; } if ( ! empty( $search ) ) { $search = \" AND ({$search}) \"; if ( ! is_user_logged_in() ) $search .= \" AND ($wpdb->posts.post_password = \'\') \"; } return $search; } add_filter( \'posts_search\', \'__search_by_title_only\', 500, 2 );