Getting Last4 Digits of Card using Customer Object - Stripe API with PHP

Question

I want to get the last 4 digits of a customers card using Stripe. I have already stored the Customer using:

      // Get the credit card details submitted by the form
      $token = $_POST['stripeToken'];

      // Create a Customer
      $StripeCustomer = \Stripe\Customer::create(array(
              "description" => "$username",
              "card" => $token
      ));

Now I'd like to access and then store the card's last 4 digits. (For context, I want to show users which card they have stored using Stripe for future payments - this is not a subscription service).

I have searched for a solution but a lot of the posts are saving the last4 digits AFTER a charge, and pull the information from the charge like:

$last4 = null;
try {
    $charge = Stripe_Charge::create(array(
    "amount" => $grandTotal, // amount in cents, again
    "currency" => "usd",
    "card" => $token,
    "description" => "Candy Kingdom Order")
);
$last4 = $charge->card->last4;

I would like to do the same BEFORE the charge , so I want to pull the last 4 from the Customer Object. The Stripe API documentation shows the attribute path for last4 from Customers,
customer->sources->data->last4

However, this does not seem to give me the correct last 4 digits.
$last4 = $StripeCustomer->sources->data->last4;

I think I am misunderstanding how to use attributes in the Stripe API. Could someone point me in the right direction?

Answer 1

$last4 = $StripeCustomer->sources->data[0]->last4;

sources->data is an array so you'd have to select the first card.

Side note: You're using the token twice, once to create the customer, and the second to create the charge, this will result in an error as the token can only be used once. You'd have to charge the customer instead of the token.