// File 1 (with stripe.js but in PHP)
// **********************************
  $intent = \Stripe\PaymentIntent::create([
      'amount' => 1099,
      'currency' => 'eur',
      'receipt_email' => $util_email,
      'payment_method_types' => ['card'],
      'capture_method' => 'manual',
      'description' => 'Empreinte (attente : confirmation)',
      'confirmation_method' => 'manual'
  ]);

$PI_secret = $intent->client_secret;

// The process launched it returns to me the TOKEN CB CARD
// *******************************************************

// File 2 (only PHP)
// *****************
 $customer = \Stripe\Customer::create([
  "email" => "mail@dom.com",
  "name" => "Firstname NAME",
  "description" => "Client pour mail@dom.com",
  "phone" => "0606060606",
  "source" => $tok_id,
  "preferred_locales" => ['fr']
  ]);

  $customer_result = decodeStripeJSON($customer);
  $customer_id = $customer_result->id;

  $payment_method = $customer_result->default_source;

\Stripe\PaymentIntent::update($PI_secret,
  ['payment_method' => $payment_method,
  'customer'  => $customer_id]
);

// To manage also the 3DS
// **********************
$intent = \Stripe\PaymentIntent::retrieve($PI_secret);
$intent->confirm();

$intent->capture();
\Stripe\PaymentIntent::update($PI_secret,
  ['description' => 'Paiement (attente : virement)']
);