telnet problem with PHP

I'm writing a little script for reading information from a router by telnet.
I have a problem

How give a comand and get the answer more times?
I means:

[...]
 $usenet = fsockopen($cfgServer, $cfgPort, &$errno, &$errstr, $cfgTimeOut);
[...]
 fwrite ($usenet, "show interface description\r\n\n");
[...]
while (!feof($usenet))
{
$r1=fgets($usenet, 1000)."<BR>\n";
}

The program don't exit from while...
... because the telnet don't give feof.
Hoh can I do?

Thank you in advance,
Andrea.
Received on Fri Dec 23 20:17:48 2005