PHP cURL Cancel Subscription PayPal issues - php

Question

I will admit, I have been on this for 3 days, back and forth through documentation, and even learned how to create my own products and plans through Postman.
So I have a complete working subscription button, now I learned I need to save the Subscription ID in order to cancel the subscription so now that is saving and loading perfectly.
To my sad surprise, I need to get an AuthKey every time someone wants to cancel, so I need to run 2 cURL commands, 1 GET Auth Key, and 1 POST cancel a subscription. How would I do this in PHP?
I don't get any errors when these commands run just no data.
Paypal cURL Example:
https://developer.paypal.com/docs/api/subscriptions/v1/#subscriptions_cancel
////////////////////////////// GET TEMP ACCESS TOKEN/////////////////////////////////
$ch = curl_init();
$clientId = "x";
$secret = "x";
$myIDKEY = "";
curl_setopt($ch, CURLOPT_URL, "https://api.sandbox.paypal.com/v1/oauth2/token");
curl_setopt($ch, CURLOPT_HEADER, false);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_USERPWD, $clientId.":".$secret);
curl_setopt($ch, CURLOPT_POSTFIELDS, "grant_type=client_credentials");
$result = curl_exec($ch);
if(empty($result))die("Error: No response.");
else
{
$json = json_decode($result);
print_r($json->access_token);
$myIDKEY = $json->access_token;
}
curl_close($ch);
/////////////////////////////// SEND CANCEL POST ////////////////////////////////
$ch = curl_init();
$headers = [
'Authorization: Bearer '.$myIDKEY,
'Content-Type: application/json'
];
$postData = [
'reason' => 'clicked cancel subscription button'
];
curl_setopt($ch, CURLOPT_URL,"https://api.sandbox.paypal.com/v1/billing/subscriptions/".$_SESSION['honeybeesubID']."/cancel");
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($postData));
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
$result = curl_exec ($ch);
$statusCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
echo $myIDKEY
Thank you so much!

Answer 1

As documented at https://developer.paypal.com/docs/api/subscriptions/v1/#subscriptions_cancel , a success response is an HTTP 204 with no data.
So, it will be normal to receive an empty response, along with that status code.