$nav_menus_setting_ids = array();
foreach ( array_keys( $this->manager->unsanitized_post_values() ) as $setting_id ) {
if ( preg_match( '/^(nav_menu_locations|nav_menu|nav_menu_item)\[/', $setting_id ) ) {
$nav_menus_setting_ids = array();
foreach ( array_keys( $this->manager->unsanitized_post_values() ) as $setting_id ) {
if ( preg_match( '/^(nav_menu_locations|nav_menu|nav_menu_item)\[/', $setting_id ) ) {