Custom WHMCS Module Development

This package delivers a custom WHMCS module written in PHP that connects a product WHMCS cannot handle on its own to your billing, so orders are provisioned on payment, suspended when overdue and terminated on cancellation. It is for hosting companies and service sellers whose product has no ready module: a niche control panel, a VPN or IPTV panel, a software license server or a domain registrar.

What goes inside a provisioning module

A provisioning module is a PHP file in modules/servers with functions WHMCS calls at fixed moments: CreateAccount, SuspendAccount, UnsuspendAccount and TerminateAccount on every plan, then ChangePackage and ChangePassword on Business. ConfigOptions defines the product settings your staff fill in, and configurable options from the cart are passed through to the remote API, so a customer who picks 4 GB of RAM or 10 seats gets exactly that.

• Each remote call goes through logModuleCall, so the module log shows the request and the reply when something fails.
• Business adds a client area page with service details and up to four custom buttons, such as reboot or reset password.
• A daily cron task on Business compares each service's status with the remote system and flags any mismatch.

Addon and registrar modules

Premium adds an addon module with its own admin page for settings and reports, single sign-on so a client clicks once to reach the remote panel, usage metrics that WHMCS can bill, and support for several servers. Registrar modules follow the same approach with RegisterDomain, TransferDomain, RenewDomain and the nameserver functions.

Before you order

Starter assumes one API with clear documentation and a sandbox. If the remote service has no API for an action, that action stays manual and I say so up front. API accounts and fees on the remote side are yours. Related work, including modules already built, is listed on the custom module development page.