fingerprint-example

fingerprint-example.php

<?php

/** Template Name: Payment template */

if (! defined('ABSPATH')) {
    exit; // Exit if accessed directly.
}

function generateNABTransactFingerprint($vendorName, $paymentReference, $paymentAlert, $products, $merchantTransactionPassword)
{
    // Sort products alphabetically by name
    usort($products, function ($a, $b) {
        return strcmp($a['name'], $b['name']);
    });

    // Prepare unit_names and unit_prices
    $unitNames = [];
    $unitPrices = [];
    foreach ($products as $product) {
        $unitNames[] = $product['name'];
        //$unitPrices[] = number_format($product['price'], 2, '.', '');
        $unitPrices[] = $product['price'];
    }

    // Join unit_names and unit_prices
    $unitNamesString = implode(',', $unitNames);
    $unitPricesString = implode(',', $unitPrices);

    // Prepare the fingerprint text
    $fingerprintText = implode('|', [
        $vendorName,
        $paymentReference,
        $paymentAlert,
        $unitNamesString,
        $unitPricesString,
        $merchantTransactionPassword
    ]);

    // echo $fingerprintText;

    // Generate the HMAC-SHA256 hash
    $fingerprint = hash_hmac('sha256', $fingerprintText, $merchantTransactionPassword);

    return $fingerprint;
}

$vendorName = 'CQL0010'; // Real: CQL0010 // Finger print test: XYZ0110

$paymentReference = isset($_POST['Parent_Account_Number']) ? $_POST['Parent_Account_Number'] : '';
$total = isset($_POST['Payment_of_fees']) ? $_POST['Payment_of_fees'] : '';
$title = isset($_POST['Title']) && $_POST['Title'] ? $_POST['Title'] : '';
$lastName = isset($_POST['Last_Name']) ? $_POST['Last_Name'] : '';
$firstName = isset($_POST['First_Name']) ? $_POST['First_Name'] : '';
$mobilePhone = isset($_POST['Mobile_Phone']) ? $_POST['Mobile_Phone'] : '';
$emailAddress = isset($_POST['Email_Address']) ? $_POST['Email_Address'] : '';
$paymentAlert = '[email protected]';

$test = false;
$merchantTransactionPassword = $test ? 'abcd1234' : 'REPLACEME';
$endpoint = $test ? 'https://demo.transact.nab.com.au/live/hpp/payment' : 'https://transact.nab.com.au/live/hpp/payment';
$action = '';
$products = [
    ['name' => 'Payment of fees', 'price' => $total],
];
$fingerprint = generateNABTransactFingerprint($vendorName, $paymentReference, $paymentAlert, $products, $merchantTransactionPassword);

if(!empty($total)){
    $action = $endpoint;
}

get_header();


while (have_posts()) :
    the_post();
?>

    <main id="content" <?php post_class('site-main'); ?>>


        <div class="payment-page-wrapper">
            <div class="payment-page-inner">

                <form method="post" 
                    id="frm-fees" 
                    name="frm-fees" 
                    action="<?php echo $action; ?>" 
                    method="post"
                    style="display:<?php echo !empty($action) ? 'none' : 'block'; ?>">

                    <h4>Payments – School Fees</h4>

                    <?php //print_r($_POST); ?>

                    <br>
                    <br>
                    <p>
                        <em>Required fields are marked with an asterisk *</em>
                    </p>


                    <p>
                        <label for="payer-title">*Title</label>
                        <select id="payer-title" name="Title">
                            <option value="Mr" <?php echo $title === 'Mr' ? 'selected' : ''; ?>>Mr</option>
                            <option value="Mrs" <?php echo $title === 'Mrs' ? 'selected' : ''; ?>>Mrs</option>
                            <option value="Ms" <?php echo $title === 'Ms' ? 'selected' : ''; ?>>Ms</option>
                            <option value="Dr" <?php echo $title === 'Dr' ? 'selected' : ''; ?>>Dr</option>
                        </select>
                        <input type="hidden" name="information_fields" value="Title" />
                    </p>


                    <p>
                        <label for="payer-surname">*Last Name</label>
                        <input type="text" 
                            id="payer-surname" 
                            name="Last Name" 
                            maxlength="128" 
                            value="<?php echo $lastName; ?>" 
                            class="text required" />
                        <input type="hidden" name="information_fields" value="Last Name" />
                    </p>


                    <p>
                        <label for="payer-firstname">*First Name</label>
                        <input type="text" 
                            id="payer-firstname" 
                            name="First Name" 
                            maxlength="128" 
s                            class="text required" 
                            value="<?php echo $firstName; ?>"  />
                        <input type="hidden" name="information_fields" value="First Name" />
                    </p>


                    <p>
                        <label for="payer-mobile">*Mobile Phone Number</label>
                        <input type="text" 
                            id="payer-mobile" 
                            name="Mobile Phone" 
                            maxlength="64" 
                            value="<?php echo $mobilePhone; ?>" 
                            class="text required" />
                        <input type="hidden" name="information_fields" value="Mobile Phone" />
                    </p>

                    <p>
                        <label for="payer-email">*Email Address</label>
                        <input type="text" 
                            id="payer-email" 
                            name="Email Address" 
                            maxlength="128" 
                            value="<?php echo $emailAddress; ?>" 
                            class="text required email" />
                        <input type="hidden" name="information_fields" value="Email Address" />
                    </p>

                    <p>
                        <label>*Parent Account Number</label>
                        <input type="text" 
                            id="parent-acc-num" 
                            name="Parent Account Number" 
                            maxlength="6" 
                            minlength="6" 
                            value="<?php echo $paymentReference; ?>" 
                            class="text required minlength maxlength" />
                        <input type="hidden" name="information_fields" value="Parent Account Number" />
                    </p>

                    <br><br>
                    <h4>Amount</h4>

                    <p>
                        <label for="total">*Total Amount</label>
                        <input type="text" id="total" name="Payment of fees" maxlength="16" value="<?php echo $total; ?>" class="text required dollar" />
                    </p>

                    <p class="submit">

                        <input type="submit" id="btnSubmit" name="btnSubmit" value="Submit" class="btn-submit" />
                    </p>


        <input type="hidden" name="payment_reference" value="<?php echo $paymentReference; ?>">

        <input type="hidden" name="vendor_name" value="<?php echo $vendorName; ?>">
        <input type="hidden" name="payment_alert" value="<?php echo $paymentAlert; ?>">
        <input type="hidden" name="print_zero_qty" value="FALSE">

        <input type="hidden" name="fingerprint" value="<?php echo $fingerprint; ?>">

        </form>
        <?php if(!empty($action)): ?>
            Please wait, redirecting you to the payment page...

            <script>
                document.forms['frm-fees'].submit();
            </script>
        <?php endif; ?>

        </div>
        </div>


    </main>

<?php
endwhile;


get_footer();