Userage Based Permissions

[aplelois]

hello there everyone..
I am trying to have this code here set a forum permission 0 if he/she is younger than 18 but for some reason its not working, can someone tell me why?

PHP Code:

        <plugin active="1" executionorder="5">
            <title>Userage Based Permissions</title>
            <hookname>global_start</hookname>
            <phpcode><![CDATA[function old_enough($day, $month, $year, $minage){
    global $current;

    $age = $current['year'] - $year;

    // Not underage
    if ($age > $minage){
        // Do nothing
        return true;
    }
    // Possibly underage
    else if ($age == $minage){
    
            // Check the month
            if ($month < $current['month']){
                // Do nothing
                return true;
            }
            // Possibly underage
            else if ($month == $current['month']){
    
                    // Check the day
                    if ($day <= $current['day']){
                        // Do nothing
                        return true;
                    }
                    // Underage
                    else {
                        return false;
                    }
    
            }
            // Underage
            else {
                return false;
            }
    }
    // Underage
    else {
        return false;
    }

    return true;
}

// Make sure they set their birthday
if ($vbulletin->userinfo['birthday']){
    // Grab the dates
    $date = explode('-', $vbulletin->userinfo['birthday']);
    // Get them ready
    $day = $date[1];
    $month = $date[0];
    $year = $date[2];
    $current['month'] = date('m');
    $current['day'] = date('d');
    $current['year'] = date('Y');
}



foreach ($vbulletin->forumcache as $key => $value){
    if ($value['minimumage'] > 0 && (!isset($current) || !old_enough($day, $month, $year, $value['minimumage']))){
        $vbulletin->userinfo['forumpermissions']["$key"] = 0;
    }
}
]]></phpcode>
        </plugin>