Paymate Express integrates Paymate buttons from your web page.
Note: Recurring transactions are NOT supported.

1.

Choose separator

Choose separator which will separateour cookie and ref value. We will use || in this example. Youhave to configure Paymate plugin to use this separator. Go to Plugins-> Paymate -> Configure -> Custom Value Separator

2.

Paymate Button

Every paymate button code must be updated from image link to from.

Original button looks like this:

<div align="center">
    <p>
         <a onclick="self.name = 'parent';" target="_blank" href="https://www.paymate.com/PayMate/ExpressPayment?mid=testmerchant&amt=58&ref=refnum&return=http://URL_TO_PostAffiliatePro/yourscript.php"><img src="https://www.paymate.com/homepage/images/butt_PayNow.gif" border="0" alt="Pay with Paymate Express"></a>
         <br />Pay with Paymate Express
    </p>
</div>

Now you must substitute it with code below and copy colored values there from code above:
<form action=https://www.paymate.com/PayMate/ExpressPayment method=get>
            <input name="mid" type="hidden" value="testmerchant"/>
            <input  name="return" type="hidden" value="http://URL_TO_PostAffiliatePro/yourscript.php"/>
            <input type="hidden" id="pap_ab45c37" name="ref" value='refnum'>
<input type="hidden" name="amt" value='58'>
            <input alt="" src="https://www.paymate.com/homepage/images/butt_PayNow.gif" type="image"/>
         </form>

3.

Integration code

Now add the following code into EVERY Paymate button form. Please make sure that the custom field you have in your button has id="pap_ab45c37".


<script type="text/javascript">
PostAffTracker.setAppendValuesToField('||');
PostAffTracker.writeCookieToCustomField('pap_ab45c37');
</script>

This will ensure that referrer will be added to the custom field after the specified separator.

4.

Integration with your processing script - part 1

Now the return callback is pointed to your script. This callback has to beforwarded also to PAP paymate.php script, which url is http://URL_TO_PostAffiliatePro/plugins/Paymate/paymate.php.In case, your paymate processing script is in PHP, you can use followingcode to accomplish that. You can place it at the beginning of yourprocessing file.

/* PAP integration */
 $ch = curl_init();
 curl_setopt($ch, CURLOPT_URL, "http://URL_TO_PostAffiliatePro/plugins/Paymate/paymate.php");
 curl_setopt($ch, CURLOPT_POST, 1);
 curl_setopt($ch, CURLOPT_POSTFIELDS, $_POST);
 curl_exec($ch);
/* end of PAP integration */

5.

Integration with your processing script - part 2

The custom parameter is in format refValue||PapValue. Inorder for 3rd party system to work correctly you need to parse refValue from the custom parameter. To do this add followingcode right after Paymate verification.

<?php
$separator = '||';
    if ($_POST['ref'] != '') {
      $explodedCustomValue = explode($separator, $_POST['ref'], 2);
          if (count($explodedCustomValue) == 2) {
            $_REQUEST['ref'] = $_POST['ref'] = $explodedCustomValue[0];   
      }
    }
?>