Get card id from Stripe API in PHP

Question

According to the API document of Stripe, I can access the card id like this:

<?php
\Stripe\Stripe::setApiKey("sk_test_xxxxxxxxxxxxxxxx");

// Get details from card
$customer = \Stripe\Customer::retrieve("cus_xxxxxxxxxxx");
print_r($customer->sources->data->id);
?>

But nothing is echo.

Could you please help me?

I following this documentation : https://stripe.com/docs/api/php#customer_object

Answer 1

A customer can have multiple cards, so $customer->sources->data is an array (as you should be able to tell from the square brackets around the value of this property). Therefore, you need to index it.

print_r($customer->sources->data[0]->id);

And if a customer has saved multiple credit cards, you should loop over it:

foreach ($customer->sources->data as $card) {
    print_r($card->id);
}