Bitcoin Payments - Pay-Per-View, Pay-Per-Download, Pay-Per-Registration class

pls sir this code

require_once( "lib/cryptobox/cryptobox.class.php" );
$options = array("..options..");

// Initialise Payment Class
$box1 = new Cryptobox ($options);

// Display Payment Box or successful payment result
echo $box1->display_cryptobox();

// One-time Process Received Payment
if ($box1->is_paid() && !$box1->is_processed())
{
// Your code here to handle a successful cryptocoin payment/captcha verification
// For example, update user membership
$box1->set_status_processed();
}


where do i put it in my controller or model ???

E-surf