/** * This adds the new weight unit to WooCommerce */ function add_woocommerce_weight_unit_pallet( $settings ) { foreach ( $settings as &$setting ) { if ( 'woocommerce_weight_unit' == $setting['id'] ) { $setting['options']['pallet'] = __( 'pallet', 'woocommerce' ); // new unit } } return $settings; } add_filter( 'woocommerce_products_general_settings', 'add_woocommerce_weight_unit_pallet' );