gistfile1.php

<?php

function changeMessage($ip, $msg)
{
    $fp = fsockopen($ip, 9100, $errno, $errstr, 5);
    if (!$fp) {
        echo "$errstr ($errno)";
    } else {
        $string = "\x1B%-12345X@PJL RDYMSG DISPLAY = \"".$msg."\"\r\n\x1B%-12345X\r\n";
        fwrite($fp, $string);
        echo "Sent " . $string . " to " . $ip . ".".PHP_EOL;
        flush();
        fclose($fp);
    }

}
function getMessage($ip)
{
    $fp = fsockopen($ip, 9100, $errno, $errstr, 5);
    if (!$fp) {
        echo "Possibly offline.";
     } else {
        fwrite($fp, "\x1B%-12345X@PJL INFO STATUS\r\n\x1B%-12345X\r\n");
        $term = false;
        while (!feof($fp) && !$term)
        {
            $string = fgets($fp, 128);
            echo str_replace("n","",$string);
            flush();
            if (!(strpos($string, "ONLINE") === false))
            {
                $term = true;
            }
        }
        fclose($fp);
    }
}
 
 
getMessage("10.3.10.11");
echo '<br/>';
changeMessage("10.3.10.11", strtoupper('billing failed'));
echo '<br/>';
getMessage("10.3.10.11");