Stripe - partial refund with PHP, iOS and Alamofire - php

Question

Hi I get an error of responseSerializationFailed(Alamofire.AFError.ResponseSerializationFailureReason.inputDataNilOrZeroLength) I guess this is caused by the amount I passed to my backend server. But, I couldn't find out why. If I process full refund (not using amount and currency), everything works fine.
Below code is in iOS.
print(countOrders)
var requestString = "http://xxxxx.com/fullRefund.php"
var params = ["chargeId": chargeId]
let amountStr = String(Int(sellingPrice * Double(quantity)))
if countOrders > 1 {
requestString = "http://xxxxx.com/partialRefund.php"
params = ["chargeId": chargeId, "amount": amountStr, "currency": currency]
}
print(requestString)
print(chargeId)
print(amountStr)
print(currency)
Alamofire.request(requestString, method: .post, parameters: params).responseJSON { (response) in
switch response.result {
case .success(_):
break
case .failure(let error):
print(error)
break
}
}
Every input should be correct as it prints
2
http://xxxxx.com/partialRefund.php
ch_1BDdTTLYXQrQQLvfRzXnzLsh
4083
CNY
responseSerializationFailed(Alamofire.AFError.ResponseSerializationFailureReason.inputDataNilOrZeroLength)
Here is the charge detail from Stripe
ID: ch_1BDdTTLYXQrQQLvfRzXnzLsh
Amount: ¥6,366.00 CNY → $7,391.84 HKD
Below code is partialRefund.php. I guess something wrong in amount since error shows inputDataNilOrZeroLength
<?php
require_once('stripe-php/init.php');
\Stripe\Stripe::setApiKey('sk_test_keyyyyyyyyyyyyyyyy');
$chargeId = $_POST['chargeId'];
$amount = $_POST['amount']; // this line is deleted in fullRefund.php
$currency = $_POST['currency']; // this line is deleted in fullRefund.php
try {
$re = \Stripe\Refund::create(
array(
"charge" => $chargeId,
"amount" => $amount*100, // this line is deleted in fullRefund.php
"currency" => $currency // this line is deleted in fullRefund.php
)
);
$json = array(
'status' => 'Success'
);
echo json_encode($json);
} catch(\Stripe\Error\Card $e) {
$json = array(
'status' => 'Failure',
'message' => $e->getMessage()
);
echo json_encode($json);
}
?>

Answer 1

That looks like you're getting an error in your response to the iOS app, rather than in something coming into your PHP script. You might want to try switching to responseString to see if that fixes it, or try adding a Content-Type header before you echo your JSON:
header('Content-Type: application/json');