1. Click Setup

2. Click the link that says “I want to get code to insert on my thank you page”

3. Select your Shopping Cart from dropdown menu.

For these directions, we will select Authorize.net ARB.

4.

In order to integrate Authorize.net ARB with our software, login to your Authorize.net account and navigate to Menu > Account > Settings >Silent Post URL. Here you must specify path to the 'http://yourdomain.com/authnetcallback.php' then click the 'Submit' button.

Next, add the following code to the 'authnetcallback.php' file:

/Next, add the following code to the 'authnetcallback.php' file: 

3. Modify the success view(template)

Open file catalog/view/theme/default/template/common/success.tpl 
For total cost without fee, add these lines: 
<?php 
if(isset($osi_totals) && isset($osi_orderid)) { 
   $subtotal = 0; foreach ($osi_totals as $item) {
   if ($item['code'] == 'sub_total') {$subtotal += $item['value'];} 
   if ($item['code'] == 'coupon') {$subtotal += $item['value'];} 
   if ($item['code'] == 'voucher') {$subtotal += $item['value'];} 
} 
   if ($subtotal < 0) {$subtotal = 0;} 
?> 
   <script async> function hideIF() { 
        document.getElementById('IF').style.visibility = ''; 
}
        function getSaleInfo() { 
          document.getElementById('st_code').style.visibility = 'hidden'; 
          document.getElementById('st_code').innerHTML='<iframe src="https://johndemo.ositracker.com/sales/salejs/amount:<?php echo $subtotal; ?>/transaction:<?php echo $osi_orderid; ?>/firstname:<?php echo isset($firstname) ? $firstname : ''; ?>/lastname:<?php echo isset($lastname) ? $lastname : ''; ?>" alt="" id=IF width=50 height=50 border="0" frameborder="0" onload="hideIF()">'; 
}
      window.onload = getSaleInfo; 
   </script> 
  <div id="st_code"></div> 
 <?php } ?>