cannot log into server via telnet PHP - php

Question

I'm using a [PHP Telnet Class][1] to connect to server via telnet to send commands. It connects to the server successfully but it fails to login in..
require_once "PHPTelnet.php";
$telnet = new PHPTelnet();
// if the first argument to Connect is blank,
// PHPTelnet will connect to the local host via 127.0.0.1
$result = $telnet->Connect('172.20.66.100','username','password');
if ($result == 0) {
$telnet->DoCommand('another command', $result);
echo $result;
$telnet->Disconnect();}
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UPDATE:
My script is working, there was some conflict going on with my virtual machine......

Answer 1

Try this:
$url = 'tcp://ADDRESS_HERE:PORT_HERE';
$fp = stream_socket_client($url, $errno, $errstr, 10);
if (!$fp) {
echo ("$errstr ($errno)<br />\n");
exit;
} else {
$command = 'execute_command_line' . PHP_EOL;
fwrite($fp, $out);
stream_set_blocking($fp, true);
while (!feof($fp)) {
$output = stream_get_contents($fp);
}
fclose($fp);
echo output;
}

Answer 2

According to the documentation in the PHPTelnet website you have the parameters to the constructor in the wrong order.
In the library's documentation there is the following example:
$result = $telnet->Connect('www.somewhere.com','login name','password');
Therefore, you should have:
$result = $telnet->Connect('172.20.66.100','username','password');
Source: PHPTelnet Documentation
EDIT
You mentioned that you get erro nº 3. In the source code, error 3 has the following description: Connect failed: Login Failed
Which points to the following URL:
Information about Error 3
Which lists the possible causes as:
You misspelled your username or password (i.e. Your credentials are wrong)
Telnet service is not available for your username and password (i.e. Your user does not have permissions to access the Telnet service)