[AS3] Teleport Command

public function handleWarning($penguin, $error) {
     $penguin->send("%xt%cerror%-1%{$error}%Warning%");
}
public function Teleport($penguin, $arguments) {
        $message = Packet::$Data[3];
        $messageParts = explode(" ", $message);
        $arguments = array_splice($messageParts, 1);
        $username = implode(" ", $arguments);
        foreach($this->server->penguins as $toTeleport) {
            if(strtoupper($toTeleport->nickname) == strtoupper($username) || strtoupper($toTeleport->username) == strtoupper($username)) {
                $this->server->joinRoom($penguin, $toTeleport->room->externalId);
            } else {
                $this->handleWarning($penguin, "Player is offline, does not exist or is in undefined room");
            }
        }
    }