Validate order references as payment

Overview

Use the isValidOrderReference method to validate that you can use a previously placed order reference to pay for a new order.

Parameters

Response

Request

<?php
echo "<pre>";
$host   = "https://api.2checkout.com";
$client = new SoapClient($host . "/soap/4.0/?wsdl", array(
    'location' => $host . "/order/4.0/soap",
    "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 = "MERCHANT_CODE";// your account's merchant code available in the 'System settings' area of the cPanel: https://secure.2checkout.com/cpanel/account_settings.php
$key = "SECRET_KEY";// your account's secret key available in the 'System settings' area of the cPanel: https://secure.2checkout.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;
}
$orderReference = '45452071';
try {
    $validOrderRef = $client->isValidOrderReference($sessionID, $orderReference);
}
catch (SoapFault $e) {
    echo "validOrderRef: " . $e->getMessage();
    exit;
}
var_dump("validOrderRef", $validOrderRef);

?>