Send Backspace or Delete using Telnet in PHP

Question

I'm using this nice piece of code to connect to a Telnet session and send it some commands and get the output.

http://www.geckotribe.com/php-telnet/

I'm running into an problem now in that I want to remove some data in the Telnet session and replace it with some other data. (Not sure if that is possible or not??)

For an example: It prompts continue N - and I need to erase that N and place a Y there.

This function sends the command...Notice the \r, is there something that would simulate a backspace or delete?

 function DoCommand($c,&$r) {
    if ($this->fp) {
        fputs($this->fp,"$c\r");
        $this->Sleep();
        $this->GetResponse($r);
        $r=preg_replace("/^.*?\n(.*)\n[^\n]*$/","$1",$r);
    }
    return $this->fp?1:0;
}

Answer 1

The control character for backspace is 0x08 (you can add it to a string in PHP as "\x08").