woocommerce_checkout_coupon_message │ filter-hook │ WC 1.0

Usage

add_filter( 'woocommerce_checkout_coupon_message', 'wp_kama_woocommerce_checkout_coupon_message_filter' );

/**
 * Function for `woocommerce_checkout_coupon_message` filter-hook.
 * 
 * @param  $html 
 *
 * @return 
 */
function wp_kama_woocommerce_checkout_coupon_message_filter( $html ){

	// filter...
	return $html;
}

$html

-

Where the hook is called

<?php wc_print_notice( apply_filters( 'woocommerce_checkout_coupon_message', esc_html__( 'Have a coupon?', 'woocommerce' ) . ' <a href="#" class="showcoupon">' . esc_html__( 'Click here to enter your code', 'woocommerce' ) . '</a>' ), 'notice' ); ?>

Where the hook is used in WooCommerce