I modified is_member allowing me to open and lock my raidbot to the public.

        function is_member($uname)
        {
                $locktest = $this -> db -> select("SELECT value FROM settings WHERE value = 'locked'");
                $result = $this -> db -> select("SELECT nickname FROM members WHERE id = " . $this -> aoc -> get_uid($uname));
                if (!empty($result))
                return 1;

                $result = $this -> db -> select("SELECT id FROM guests WHERE id = " . $this -> aoc -> get_uid($uname));
                if (!empty($result))
                return 2;

                if (empty($locktest))
                return 2;

                return false;
        }

And my lock.php module:

<?php

  $lock = new Lock($bot);


  $commands["pgmsg"]["lock"] = &$lock;
  $commands["pgmsg"]["open"] = &$lock;




  /*
    The Class itself...
  */
  class Lock
  {
    var $bot;
    var $lockstat;



    /*
      Constructor:
        Hands over a referance to the "Bot" class.
    */
    function Lock (&$bot)
    {
      $this -> bot = &$bot;
      $this -> lock = array();
    }

    function pgmsg($name,$msg) {
      if($this -> bot -> admin -> in_group($name, "admin")) {
                if (preg_match("/^" . $this -> bot -> commpre . "lock/i", $msg)) {
                        $this -> bot -> db -> query("UPDATE settings SET value='locked' WHERE setting = 'lock'");
                        $this -> bot -> send_pgroup("<botname> has been locked to members only");
                }
                if (preg_match("/^" . $this -> bot -> commpre . "open/i", $msg)) {
                        $this -> bot -> db -> query("UPDATE settings SET value='open' WHERE setting = 'lock'");
                        $this -> bot -> send_pgroup("<botname> has been opened to the public");
                }
        }
        else
                $this -> bot -> send_pgroup("You must be an admin to use this command.");
     }
  }
?>
Also modifed the inc_pgleave function in bot.php to check whether an admin is leaving the raidbot channel and it's still unlocked.

function inc_pgleave($args)
{
$locktest = $this -> db -> select("SELECT value FROM settings WHERE value = 'locked'");
$user = $this -> aoc -> get_uname($args[1]);
if(empty($locktest) && $this -> admin -> in_group($user,"admin")) {
$this -> send_tell($user,"The bot is currently unlocked and you are an admin, please make sure the bot is locked after use");
$this -> send_tell("superadminname","The admin $user has left the raidbot unlocked");
}
$this -> log("PGRP", "LEAVE", $user . " left privategroup.");

if (!empty($this -> commands["pgleave"]))
{
$keys = array_keys($this -> commands["pgleave"]);
foreach ($keys as $key)
$this -> commands["pgleave"][$key] -> pgleave($user);
}
}
Obviously you would change "superadminname" to whoever owns the bot, or even code it to send it to all superadmins.

There are better ways to go about it as I wrote it fairly quickly when I wanted to open my bot to the public.