woocommerce_get_coupon_id_from_code filter-hook . WC 1.0

Usage

add_filter( 'woocommerce_get_coupon_id_from_code', 'filter_function_name_743', 10, 3 );
function filter_function_name_743( $absint, $code, $exclude ){
	// filter...

	return $absint;
}

$absint

-

$code

-

$exclude

-

Where the hook is called

return apply_filters( 'woocommerce_get_coupon_id_from_code', absint( current( $ids ) ), $code, $exclude );

Where in WP core the hook is used WooCommerce