Checkout for WHMCS: a free, open source way to put your order form on WordPress

[ict-innovations]

We run WHMCS behind a handful of our own product sites, and the same thing kept happening. Someone reads the pricing page on WordPress, clicks Order, and lands on a billing portal that looks nothing like the site they were just on. A fair number of them never come back.

So we built a WordPress plugin to keep the whole flow on one site. We have now open sourced it under GPL-2.0.

What it does

You drop a [whmcs_checkout] shortcode on a page. The plugin reads your product groups and products from the WHMCS API, caches them for an hour, and renders a pricing grid plus a one page checkout. Payment is taken inline with PayPal, in sandbox or live mode. Once payment clears it calls AddClient and AddOrder, so you end up with a real client and a real order in WHMCS, and the buyer lands on a confirmation page with their login details.

Bits you might care about

• Monthly through triennial billing cycles, plus setup fees, read live from WHMCS
• Deep link straight into one product with ?pid=
• An optional add-ons step and an annual support line item
• Social signup with Google, Facebook and LinkedIn, so buyers can skip the registration form
• Per product overrides in wp-admin for featured flags and feature bullets, so your pricing table reads the way you want without editing anything in WHMCS
• Updates show up in wp-admin straight from the GitHub releases, so you do not need a separate updater plugin

Requirements

WordPress 6.0 or newer, PHP 7.4 or newer, a WHMCS install with API credentials, and a PayPal REST app if you want inline payment.

Where to get it

Source and issue tracker: https://github.com/ictinnovations/checkout-for-whmcs
Composer: ictinnovations/checkout-for-whmcs

It has been running on our own sites for a while and has taken real orders, but test it against a staging WHMCS before you point it at production. If something breaks, open an issue on GitHub and I will take a look. Happy to hear what is missing too.

[pRieStaKos]

 Zero screenshots, neither in this post, neither in the GH repo...