Trying to get this vB 4 code to work with vB 3

[HMBeaty]

In one of my modifications, I've got a forum selection option, and can't get it to work in vB 3. Been too long since I actually looked at the code for vB 3 lol. Anyway, this is what I have for vB 4:

PHP Code:

function usml_construct_forum_chooser()
{
    global $vbulletin;

    $forumids = array();

    foreach ($vbulletin->forumcache AS $forumid => $forum)
    {
        $forumperms = $vbulletin->userinfo['forumpermissions']["$forumid"];

        if (
            $forum['displayorder'] > 0
            AND verify_forum_password($forum['forumid'], $forum['password'], false)
            AND ($forum['options'] & $vbulletin->bf_misc_forumoptions['active'])
            AND ($forumperms & $vbulletin->bf_ugp_forumpermissions['canview'])
        )
        {
            $forumids["$forumid"] = usml_construct_forum_depth($forum['depth']) . ' ' . $forum['title'];
        }
    }
    return $forumids;
}

function usml_construct_forum_depth($depth)
{
    $depthmark = '';

    for ($i = 0; $i < $depth; $i++)
    {
        $depthmark .= '--';
    }
    return $depthmark;
}

function usml_construct_forum_options($forumids)
{
    $options = '';

    foreach ($forumids AS $key => $val)
    {
        $options .= render_option_template($val, $key, '');
    }
    return $options;
} 


And this code is called in the main file with:

PHP Code:

$forumids = usml_construct_forum_options(usml_construct_forum_chooser()); 


So, anyone that still uses/remembers vB 3 know what needs changed? lol

I've got this part of the code commented out at the moment

PHP Code:

// $forumids = usml_construct_forum_options(usml_construct_forum_chooser()); 


If I remove the "//" all I get is a white page, so I KNOW it's this code, but what?