Jwt::create

static function create(array $channels = [], int $userId = 0): string
{
	if (empty($channels) && $userId === 0)
	{
		throw new MainArgumentException("Either channel list or user id must be specified");
	}

	$time = time();
	$data = [
		'iss' => (string)Config::getHostId(),
		'iat' => $time,
		'exp' => $time + self::TTL,
	];
	if ($userId > 0)
	{
		$data['sub'] = (string)$userId;
	}
	if (!empty($channels))
	{
		$data['chan'] = implode(',', $channels);
	}
	$secret = Config::getSignatureKey();

	return MainWebJWT::encode($data, $secret);
}