WHMCS System Requirements

Our Shared and Reseller hosting platform is fully capable of running WHMCS

The following table shows the minimum and recommended system requirements for running WHMCS v7.5 and later (this was correct as of 06/11/2018)

PHP Version5.6.0Latest 7.1 or 7.2 Release
PHP Memory Limit64MB128MB**
PHP Database ExtensionPDOPDO
PHP ExtensionsCurl with SSL, GD2 Image Library, JSON Support, XMLCurl with SSL, GD2 Image Library, JSON Support, IMAP, MBString, Iconv
MySQL Version5.2.05.5.x
Ioncube Loaders10.1.0 or laterThe latest 10.1.x version
WHMCS 7.0-7.4 supports PHP 5.6 and 7.0
WHMCS 7.5 supports PHP 5.6, 7.0, 7.1, and 7.2
While these are the minimum requirements, we strongly recommend using the latest available, stable releases of all software and extensions. Recommended suggestions are correct as at 2nd April 2018.
A detailed discussion of the recommended system environment configurations (OS, Web Server, Database Engine, PHP and Ioncube) is published in the System Environment Guide.

Looking for the requirements for WHMCS 7.0 – 7.4? Guide is available over at WHMCS here

* We validate WHMCS to run in Linux based environments running the Apache web server. Other environments such as Windows-based configurations may experience compatibility issues and are not supported.

** Memory requirements vary depending upon the size and volume of activity in an installation. Your exact requirements may differ.

*** As part of PCI compliance, we recommend a SSL library capable of TLS 1.1 and/or 1.2. If using OpenSSL, version 1.0.1c or newer is recommended.

This guide is correct as of 06/11/2018 for up to date article please go to WHMCS here