include('./Net/SFTP.php');
$sftp = new Net_SFTP("server", 2022);
if (!$sftp->login('username', 'password')) {
    exit("Login error");
}
$size = $sftp->size('./file.txt');
$Container = nl2br($sftp->get('./file.txt', false, $size - 5000));
if( !empty($Container) ) {
    echo $Container;
} else {
    exit("empty file");
}