// The sale amount. You get this value from your payment gateway or the shopping cart
$sale_amt = 50;

// The Post URL (Get this value from the settings menu of this plugin)
$postURL = "http://www.example.com/wp-content/plugins/wp-affiliate-platform/api/post.php";

// The Secret key (Get this value from the settings menu of this plugin)
$secretKey = "4bc67180656782.45045137";

// Retrieve the value from the browser's cookie to find out who the referrer was
$affiliate_id = $_COOKIE['ap_id'];

// Prepare the data
$data = array ();
$data['secret'] = $secretKey;
$data['ap_id'] = $affiliate_id;
$data['sale_amt'] = $sale_amt;

// send data to post URL to award the commission
$ch = curl_init ($postURL);
curl_setopt ($ch, CURLOPT_POST, true);
curl_setopt ($ch, CURLOPT_POSTFIELDS, $data);
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, true);
$returnValue = curl_exec ($ch);
curl_close($ch);