woocommerce_update_coupon │ action-hook │ WC 1.0

Usage

add_action( 'woocommerce_update_coupon', 'wp_kama_woocommerce_update_coupon_action', 10, 2 );

/**
 * Function for `woocommerce_update_coupon` action-hook.
 * 
 * @param  $coupon_id 
 * @param  $coupon    
 *
 * @return void
 */
function wp_kama_woocommerce_update_coupon_action( $coupon_id, $coupon ){

	// action...
}

$coupon_id

-

$coupon

-

Where the hook is called

do_action( 'woocommerce_update_coupon', $coupon->get_id(), $coupon );

do_action( 'woocommerce_update_coupon', $id );

do_action( 'woocommerce_update_coupon', $id );

Where the hook is used in WooCommerce