关于WP数据库优化，看看这2段代码 哪段是对的？
2024/12/17 08:31:48
关于WP数据库优化，看看这2段代码 哪段是对的？
- if (!function_exists('maizi_set_no_found_rows')) { /** * 设置WP_Query的 'no_found_rows' 属性为true，禁用SQL_CALC_FOUND_ROWS * * @param WP_Query $wp_query WP_Query实例 * @return void */ function maizi_set_no_found_rows(\WP_Query $wp_query) { $wp_query->set('no_found_rows', true); }}add_filter('pre_get_posts', 'maizi_set_no_found_rows', 10, 1);if (!function_exists('maizi_set_found_posts')) { /** * 使用 EXPLAIN 方式重构 */ function maizi_set_found_posts($clauses, \WP_Query $wp_query) { // Don't proceed if it's a singular page. if ($wp_query->is_singular()) { return $clauses; } global $wpdb; $where = isset($clauses['where']) ? $clauses['where'] : ''; $join = isset($clauses['join']) ? $clauses['join'] : ''; $distinct = isset($clauses['distinct']) ? $clauses['distinct'] : ''; $wp_query->found_posts = (int)$wpdb->get_row("EXPLAIN SELECT $distinct * FROM {$wpdb->posts} $join WHERE 1=1 $where")->rows; $posts_per_page = (!empty($wp_query->query_vars['posts_per_page']) ? absint($wp_query->query_vars['posts_per_page']) : absint(get_option('posts_per_page'))); $wp_query->max_num_pages = ceil($wp_query->found_posts / $posts_per_page); return $clauses; }}add_filter('posts_clauses', 'maizi_set_found_posts', 10, 2);