Single Sign-On in cart

Overview

Use the getSingleSignOnInCart method.  Avangate attaches a unique token to links, designed to identify the returning shoppers and support the automatic extraction of payment data and billing information from the Avangate system. For example, you can generate single sign on in cart links for existing customers logged into your website based on their external or Avangate customer IDs.

How does this work?

When accessing the shopping cart using tokenized payment links:

• Avangate prefills automatically customer billing and delivery details associated with their Avangate customer accounts (linked based on their unique customer IDs).
• Avangate presents shoppers with an optimized payment area featuring the credit / debit cards used to make previous purchases / transactions in the Avangate system. Customers have the option of selecting one of the payment methods depending on available card-on-file data.

Parameters

Response

Request

<?php
$host   = "https://api.avangate.com";
$client = new SoapClient($host . "/soap/4.0/?wsdl", array(
    'location' => $host . "/soap/4.0/",
    "stream_context" => stream_context_create(array(
        'ssl' => array(
            'verify_peer' => false,
            'verify_peer_name' => false
        )
    ))
));

function hmac($key, $data)
{
    $b = 64; // byte length for md5
    if (strlen($key) > $b) {
        $key = pack("H*", md5($key));
    }
    
    $key    = str_pad($key, $b, chr(0x00));
    $ipad   = str_pad('', $b, chr(0x36));
    $opad   = str_pad('', $b, chr(0x5c));
    $k_ipad = $key ^ $ipad;
    $k_opad = $key ^ $opad;
    return md5($k_opad . pack("H*", md5($k_ipad . $data)));
}
$merchantCode = "YOUR_MERCHANT_CODE";// your account's merchant code available in the 'System settings' area of the cPanel: https://secure.avangate.com/cpanel/account_settings.php
$key = "YOUR_SECRET_KEY";// your account's secret key available in the 'System settings' area of the cPanel: https://secure.avangate.com/cpanel/account_settings.php
$now          = gmdate('Y-m-d H:i:s'); //date_default_timezone_set('UTC')
$string = strlen($merchantCode) . $merchantCode . strlen($now) . $now;
$hash   = hmac($key, $string);
try {
    $sessionID = $client->login($merchantCode, $now, $hash);
}
catch (SoapFault $e) {
    echo "Authentication: " . $e->getMessage();
    exit;
}
$IdCustomer = '352365983';
$CustomerType = 'AvangateCustomerReference';
$Url = 'https://store.avancart.com/order/checkout.php?PRODS=4639321&QTY=1&CART=1&CARD=2';
$ValidityTime = 50;
$ValidationIp = null;
try {
    $ssoLINK = $client->getSingleSignOnInCart($sessionID, $IdCustomer, $CustomerType, $Url, $ValidityTime, $ValidationIp);
}
catch (SoapFault $e) {
    echo "ssoLINK: " . $e->getMessage();
    exit;
}
var_dump("ssoLINK", $ssoLINK);