$body = <<< 'EOF'
    <p>You have been redirected here by default.
    You are most probably using the default CAS configuration.</p>

    <p>The default CAS bundle configuration should be installed in
    <code>config/packages/dev/cas_bundle.yaml

</p>

  <p>Please update your configuration and replace <code>cas_bundle_homepage</code>
  with an existing route of your app.</p>
  EOF;

</code>

function isAssoc(array $array): bool
{
    if (array() === $array) return false;
    return array_keys($array) !== range(0, count($array) - 1);
}

'Y-m-d\\TH:i:sP'

$dateStr = '1979-09-05T11:27:04+02:00';
$date = DateTime::createFromFormat('Y-m-d\\TH:i:sP', $dateStr);