Creating a new refund will refund a charge/payment that has previously been created but not yet refunded. Funds will be refunded to the credit or debit card that was originally paid to stripe.
You can partially refund multiple times, until the entire charge has been refunded. Once charged amount refunded, a charge can't be refunded again. You can refund amount through payment intent id or charge id. I will show you both way in this tutorial.
Download stripe SDK for PHP
require_once realpath(dirname(__FILE__)) . '/stripe/autoload.php';
\Stripe\Stripe::setApiKey('sk_test_XXXXXXXXX'); // stripe secret key
Refund via charge id
$refund_amount = 10;
$transaction_id = 'ch_XXXXXXXXXXX';
$refund = \Stripe\Refund::create(array(
'amount' => $refund_amount*100, // add this key if you want to create a partial refund, otherwise, the stripe will refund the full amount.
'charge' => $transaction_id,
));
Refund via payment intent id
$refund_amount = 10;
$transaction_id = 'pi_XXXXXXXXXXX';
$refund = \Stripe\Refund::create(array(
'amount' => $refund_amount*100, // add this key if you want to create a partial refund, otherwise, the stripe will refund the full amount.
'payment_intent' => $transaction_id,
));