WishList Member is a powerful, yet easy to use membership solution that can turn any WordPress site into a full-blown membership site.

1.

Wishlist Member with PayPal

Integration with PayPal is easy - as WishList Member let's you create a PayPal button and integrate it using notification URL, you can simply integrate each payment button using a standard PayPal integration method.

When that part is done, open the WishList Member plugin in your WP Plugin editor and edit this file:

wishlist-member/lib/integration.shoppingcart.paypal.php
Find a line with text saying function process_verification and add this code right below that line:

/* Post Affiliate Pro integration snippet */
 $ch = curl_init();
 curl_setopt($ch, CURLOPT_URL, "http://URL_TO_PostAffiliatePro/plugins/PayPal/paypal.php");
 curl_setopt($ch, CURLOPT_POST, 1);
 curl_setopt($ch, CURLOPT_POSTFIELDS, $_POST);
 curl_exec($ch);
/* /Post Affiliate Pro integration snippet */

That's it. Save your work and it is integrated now. Do not forget to activate your PayPal plugin.

Do not forget to integrate your WordPress with the click tracking code.