File that is called for every page?

[MattCNS]

I'd like to call some custom PHP before each page is loaded in WHMCS. Is there a file that is loaded for every page that I can add a hook to? For example, is init.php always called?

[WebsiteIntegrations]

header.tpl and footer.tpl

 

and use similar to

 

{php}
include ('../inc/menu_box-top.php');
{/php}

[MattCNS]

Thanks for the suggestion wwesn. Do you know how early in the execution order the template files are called? Ideally I'd like to call my script before there is any DB access.