Description:
------------
If I call setcookie(string $name, string $value, array $options) with all of options passed (expires, path, domain, secure, httponly, samesite), PHP generates incorrect Set-Cookie HTTP header: SameSite parameter is empty if I set "Lax", or "Str" if I set "Strict". But if I miss, for example, one option for setcookie (let it be "path"), everything is fine. This behavior doesn't depend on cookie value length.

Test script:
---------------
setcookie('key', 'value', [
    'expires' => time() + 31536000,
    'path' => '/',
    'domain' => 'example.com',
    'secure' => true,
    'httponly' => true,
    'samesite' => 'Lax'
]);
// Expected:
// Set-Cookie: key=value; expires=Thu, 13-Feb-2020 12:06:47 GMT; Max-Age=31536000; path=/; domain=example.com; secure; HttpOnly; SameSite=Lax
// Actual:
// Set-Cookie: key=value; expires=Thu, 13-Feb-2020 12:06:47 GMT; Max-Age=31536000; path=/; domain=example.com; secure; HttpOnly; SameSite=