[Marco van Herwaarden]

PHP Code:

<?php
global $something;

foreach ($vbulletin->forumcache as $forumdata)
    {
    if ( strpos($forumdata["description"], '<!-- something -->') !== false )
        {
        $something[] = $forumdata["forumid"];
        }

This will make the variable $something that is in the namespace of the calling script (ie. outside the function) accessible within the function. If the variable has not been defined/used yet it will be created implicit on the first use. If you now set $something to a value in your function, it will be accessible outside the function.

For adding new options to a Forum, see: https://vborg.vbsupport.ru/showthread.php?t=93445