Can't install Symfony 2.8

Question

I'm trying to install symfony 2.8 in my local computer, under xampp and Windows 10. According to the official documentation, I have to use:

php -r "file_put_contents('symfony', file_get_contents('https://symfony.com/installer'));"

but https://symfony.com/installer doesn't exist anymore. So, I found I cand install it using composer, in this way:

composer create-project symfony/framework-standard-edition sf8 2.8.x-dev

or even in this other way:

composer create-project symfony/skeleton symfony2.8

But in both cases I get the same error (I'll paste from the second one command)

https://repo.packagist.org could not be fully loaded (curl error 35 while downloading https://repo.packagist.org/packages.json: error:1407742E:SSL routines:SSL23_GET_SERVER_HELLO:tlsv1 alert protocol version), package information was loaded from the local cache and may be out of date


  [Composer\Downloader\TransportException]
  curl error 35 while downloading https://repo.packagist.org/p2/symfony/skeleton.json: error:1407742E:SSL routines:SS
  L23_GET_SERVER_HELLO:tlsv1 alert protocol version

Any ideas? Thanks!