Someone

                if (strtolower(substr($msgwithoutident, 0, 4)) == 'join' && $data->host == "unaffiliated/aheartattack/x-000001")
                {
                        $message = substr($msgwithoutident, 5, strlen($msgwithoutident)-5);
                        $i = 0;
                        global $channels;
                        while ($i != count($channels))
                        {
                                if ($channels[$i] == 'nothing') { $i++; }
                                if ($channels[$i] == $message)
                                {
                                        $irc->message(SMARTIRC_TYPE_CHANNEL, $recip, $data->nick.': I\'m already on that channel!');
                                        return;
                                }
                                $i++;
                        }
                        array_push($channels, $message);
                        $irc->join($message);
                }