Custom Template PHP

You can add PHP code to your custom templates. We recommend using the hook system for most customizations.

Legacy Smarty Tags

To promote better security, we plan to move to Smarty 4, which is not compatible with SmartyBC, in the near future. If you use certain Smarty tags, you must remove them now.

Login Session Length

You can adjust the login session length for admins and users. WHMCS will automatically end login sessions after the set period of inactivity.

PHP Info

You can view information about your PHP configuration from within the Admin Area.

PHP Upgrades

To meet WHMCS's PHP version requirements, you may need to periodically update PHP to a new supported version.


Smarty Security Policy

Smarty Security Policies are security hardening measures that protect a system. WHMCS applies a Smarty Security Policy for system-wide use and a mail policy for stored and dynamic email-based templates.