The complete all-in-one client management, billing & support solution for web hosts & other online businesses.

WHMCS is the complete all-in-one client management, billing &support solution for Web Hosts & Other Online Businesses. Packedwith features but with a core focus on remaining easy to use and customize, WHMCS enables you to easily and effectively manage yourbusiness. It also automates many routine tasks including invoicing,order provisioning, suspensions, and more.

For the easiest work download the integration hook and unzip it into the /includes/hooks/ directory.

In the uploaded pap.php file follow the instructions on lines 10-12.

Do not forget to upload the latest PapApi.class.php file to the /includes/hooks/ directory as well. The PapApi.class.php file can be downloaded from the merchant panel of Post Affiliate Pro (Network) at Tools> Integration> API Integration> Download PAP API.