MPower PHP OPR charge

opr_charge.php

<?php
// Onsite Payment Request Charge requires bother the OPR_Token & Customers Confirmation Token
if($invoice->charge("OPR_TOKEN","CUSTOMER_CONFIRM_TOKEN")) {
  echo $invoice->getStatus();
  echo $invoice->response_text;
  echo $invoice->getReceiptUrl();
  echo $invoice->getCustomerInfo("name");
  echo $invoice->getCustomerInfo("email");
} else {
  echo $invoice->getStatus();
  echo $invoice->response_text;
}