<?php

// guid is banned from the server
if(substr($finalresponse, 0, 30) == "\xff\xff\xff\xfferror\x0aYou have been BANNED"){
    //you can echo something here to notify you of this
}

// server is running some kind of a mod
substr($finalresponse, 0, 24) == "\xff\xff\xff\xffconnectResponse\x20mods"){
    //you can echo something here to notify you of this
}

// your ping is too high for the server
substr($finalresponse, 0, 31) == "\xff\xff\xff\xfferror\x0aEXE_ERR_LOW_PING_ONLY"){
    //you can echo something here to notify you of this
}

// server has a password needed to connect, yours was invalid or not specified
substr($finalresponse, 0, 30) == "\xff\xff\xff\xfferror\x0aGAME_INVALIDPASSWORD"){
    //you can echo something here to notify you of this
}

// your client's version in the connect string is different than the server's
substr($finalresponse, 0, 37) == "\xff\xff\xff\xfferror\x0aEXE_SERVER_IS_DIFFERENT_VER"){
    //you can echo something here to notify you of this
}

?>