How to create JWT with lcobucci/jwt in PHP

CreateJWT.php

<?php
require_once('../composer/vendor/autoload.php');

use Lcobucci\JWT\Builder;
use Lcobucci\JWT\Signer\Rsa\Sha256;

$signer = new Sha256();

$key = <<<EOT
-----BEGIN RSA PRIVATE KEY-----
HogeHogeHogeHoge....
-----END RSA PRIVATE KEY-----
EOT;

$token = (new Builder())->setIssuedAt(time())
                        ->setExpiration(time() + 600) // maximum: 600s
			->setIssuer("1234567890") // App ID
			->sign($signer, $key)
			->getToken();

$token->getHeaders();
$token->getClaims();

echo $token;
?>