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 OpenCart.

4. To integrate sale tracking with OpenCart, you should do the following steps.

1. Navigate to your cart directory catalog\controller\checkout\ and open confirm.php for editing. Find this line:
$data['totals'] = array();
Put this code below that line:
$this->session->data['osi_totals'] = $order_data['totals'];
$this->session->data['osi_products'] = $data['products'];
Save the file and continue with next step.

2. Open file catalog/controller/checkout/success.php and find this line (first occurrence):
if ($this->customer->isLogged()) {

2. Place the following code above that line:

//OSIAFFILIATE TRACKING CODE 
   $data['osi_orderid'] = $this->session->data['order_id']; 
   $data['osi_totals'] = $this->session->data['osi_totals']; 
   $data['osi_products'] = $this->session->data['osi_products']; 
 if ($this->customer->isLogged()) { 
   $data['customer_email'] = $this->customer->getEmail(); 
   $data['firstname'] = $this->customer->getFirstName(); 
   $data['lastname'] = $this->customer->getLastName(); } else { 
   $data['customer_email'] = $this->session->data['guest']['email']; 
   $data['firstname'] = $this->session->data['guest']['firstname']; 
   $data['lastname'] = $this->session->data['guest']['lastname']; 
 }
  unset($this->session->data['osi_products']); 

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 } ?>