Complete Guide to WHMCS Module Development in 2024

Introduction to WHMCS Module Development

WHMCS is the leading web hosting automation platform, and developing custom modules can extend its functionality significantly. In this guide, we'll cover everything you need to know about creating professional WHMCS modules.

Types of WHMCS Modules

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1. Provisioning Modules

Provisioning modules automate the setup, suspension, termination, and management of services. They connect WHMCS to external APIs like cPanel, Plesk, or custom server panels.

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2. Payment Gateways

Payment gateway modules enable integration with payment processors like Stripe, PayPal, and local payment methods.

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3. Addon Modules

Addon modules add new features to WHMCS admin area, such as reporting tools, bulk management features, or integrations.

Getting Started

First, create your module directory structure:

/modules/servers/yourmodule/
├── yourmodule.php
├── lib/
│   └── API.php
└── hooks.php

Core Functions

Every provisioning module must implement these functions:

CreateAccount - Provisions new services

SuspendAccount - Suspends services

UnsuspendAccount - Reactivates services

TerminateAccount - Terminates services

Best Practices

Always validate input - Never trust user input

Use try-catch blocks - Handle exceptions gracefully

Log all API calls - Make debugging easier

Follow WHMCS coding standards - Maintain consistency

Conclusion

WHMCS module development opens up endless possibilities for hosting automation. Start with simple modules and gradually build more complex integrations.