woocommerce_checkout_update_order_review │ action-hook │ WC 1.0

Usage

add_action( 'woocommerce_checkout_update_order_review', 'wp_kama_woocommerce_checkout_update_order_review_action' );

/**
 * Function for `woocommerce_checkout_update_order_review` action-hook.
 * 
 * @param  $wp_unslash() 
 *
 * @return void
 */
function wp_kama_woocommerce_checkout_update_order_review_action( $wp_unslash() ){

	// action...
}

$wp_unslash()

-

Where the hook is called

do_action( 'woocommerce_checkout_update_order_review', isset( $_POST['post_data'] ) ? wp_unslash( $_POST['post_data'] ) : '' ); // phpcs:ignore WordPress.Security.ValidatedSanitizedInput.InputNotSanitized

Where the hook is used in WooCommerce