fallback-token.php

<?php
function getFallbackToken()
{
    $date = new DateTime();
    $date->add(new DateInterval('PT4H'));
    echo $date->format('Y-m-d H:i:s');
    $expires = $date->format(DateTime::ATOM);

    $content = json_encode([
        'expires' => $expires,
        'ip' => "127.0.0.1",
        'userid' => rand(10000, 99999),
    ]);

    $cipher = new AES(AES::MODE_ECB);
    $cipher->setKey(env('FALLBACK_AES_KEY', 'RandomStringMadeFrom32Characters'));
    $token = base64_encode($cipher->encrypt($content));

    $res = array(
        'token' => $token,
        'expires' => $expires,
    );

    return $res;
}

getFallbackToken();
?>