woocommerce_cart_totals_coupon_label │ filter-hook │ WC 1.0

translators: %s: coupon code

Usage

add_filter( 'woocommerce_cart_totals_coupon_label', 'wp_kama_woocommerce_cart_totals_coupon_label_filter', 10, 2 );

/**
 * Function for `woocommerce_cart_totals_coupon_label` filter-hook.
 * 
 * @param  $sprintf 
 * @param  $coupon  
 *
 * @return 
 */
function wp_kama_woocommerce_cart_totals_coupon_label_filter( $sprintf, $coupon ){

	// filter...
	return $sprintf;
}

$sprintf

-

$coupon

-

Where the hook is called

$label = apply_filters( 'woocommerce_cart_totals_coupon_label', sprintf( esc_html__( 'Coupon: %s', 'woocommerce' ), $coupon->get_code() ), $coupon );

Where the hook is used in WooCommerce