<?php

require_once 'netconf/Device.php';  // connect method here is using fopen instead of expect_popen

$hostname = 'xxxx';
$username = 'rod';
$password = 'yyy';
$port = '22';

$device = new Device($hostname, $username, $password, $port);
$device->connect();

$reply = $device->execute_rpc("get-system-users-information");
echo $reply->to_string();
$device->close();