Introduction

UltraCart offers a SOAP interface to the Checkout process. Admittedly, it's not well documented. There aren't many merchants currently using it.
The functionality of it is nearly identical to the Javascript API, in terms of methods and objects, so please cross-reference the Javascript API docs for insight.

The best way to see the SOAP API is to download the reference implementation and run it.
Requirements: It requires PHP5 and there's a function for determing page url that relies on Apache (not IIS).
Installation:

Unzip it into any php directory and browse to cart.php.
There are instructions on the page for adding items to the cart.
Once items are in the cart, it will behave like the standard UltraCart single page checkout.

Here's the working example: ucsoap_1.1.zip

Example	Version	Changes
ucsoap.zip	1.0	Initial Version
ucsoap_1.1.zip	1.1	Added `registerCustomer()`, `loginCustomer()`, `establishCustomerProfile()`, and `customer_profile.php` demo page

WSDL

Here's the WSDL. It has all the gory details.https://secure.ultracart.com/axis/services/CheckoutAPIV2?wsdl

Usage

Here's an example php script for using the SOAP Checkout:

<?php
$url = 'https://secure.ultracart.com/axis/services/CheckoutAPIV1?wsdl';
$client = new SoapClient($url);
$merchantId = 'DEMO';

/*** Check if there's already a cart ***/
if(!isset($_COOKIE["cartId"])){
	$cart = $client->createCart($merchantId);
}else{
	$cartId=$_COOKIE["cartId"];
	$cart = $client->getCart($merchantId,$cartId);
}
?>

Sample Files

File	Comments
list_functions.php	List all SOAP functions
add_item.php	Add an item to a cart
add_items.php	Add several items to a cart
get_items.php	Get items and display them
update_items.php	Add/Update/Delete Items, also Clear Cart and estimateShipping. You'll need jquery.1.4.2+ to execute estimateShipping()
estimate_shipping.php	queries available shipping methods and returns them in json format. called via ajax by update_items.php

Common Problems

No deserializer for CartItemMultimedia

Further Information

What would you like to see? Use the feedback button at the bottom of this page or the Forums and let us know what tutorials you'd like to see.

SOAP Checkout API