$data = '{
            "amount": {
            "currency": "USD",
            "total": "10"
            },
            "is_final_capture": false
          }';

https://api.sandbox.paypal.com/v1/payments/authorization/<authorizationId>/capture

stdClass Object
(
    [name] => PAYMENT_ALREADY_DONE
    [message] => Payment has been done already for this cart.
    [information_link] => https://developer.paypal.com/docs/api/payments/#errors
    [debug_id] => ce22df5392497
)