}
//Copy credentials from Rivio Dashboard (http://dashboard.getrivio.com/dashboard/settings/business)
$rivio = new Rivio($rivio_api_key, $rivio_secret_key);
//Minimal parameters list
/*
$result=$rivio->register_postpurchase_email(
    "1492411013333333s",//$order_id
    "2015-09-28T09:16:16-04:00",//$ordered_date
    "*****@*****.**",//$customer_email
    "John",//$customer_first_name
    "1492411012",//$product_id
    "Samsung Galaxy S6"//$product_name
);*/
//Full parameters list
try {
    $result = $rivio->register_postpurchase_email("1492411013331", "2015-09-28T09:16:16-04:00", "*****@*****.**", "John", "1492411012", "Samsung Galaxy S6", "https://example.com/products/galaxy-s6", "https://images.example.com/big/200", "This is the product description", "1234567890123", "Mobile phone", "Samsung", "499");
} catch (Exception $e) {
    $result = "Error: " . $e->getMessage();
}
?>
<html>
    <head>
        <title>Register Postpurchase Email - Rivio PHP SDK example</title>
    </head>
    <body>
        <h1>Rivio Register Postpurchase Email</h1>
        <p>result:</p>
        <pre><?php 
print_r($result);
?>
</pre>