検索 広告 // functions.php に追加 add_filter( ‘wp_nav_menu_items’, ‘add_search_box_to_menu’, 10, 2); function add_search_box_to_menu( $items, $args ) { if( $args->theme_location == ‘primary’ ){ return $items . ‘ ‘ . get_search_form(false) . ‘ ‘; } }