apple iap App Store Server Notifications V2 parse code

parse.php

<?php
  $error = ['code'=>0,'msg'=>''];
  $req = json_decode(file_get_contents("php://input"), true);
  if (//https://developer.apple.com/documentation/appstoreservernotifications/responsebodyv1
    !isset($req['environment']) ||
    //https://developer.apple.com/documentation/appstoreservernotifications/responsebodyv2
    !isset($req['signedPayload']) {
    $error = ['code' => 400, 'msg' => 'params error'];
      return $error;
  }

  if(isset($req['environment'])) {
    ...
    return ['code'=>0,'msg'=>''];
  }
  if(isset($req['signedPayload'])) {
    list($header,$payload,$sign) = explode('.', $req['signedPayload']);
    $decodePayload = base64_decode($payload);
    $notificationType = $decodePayload['notificationType'];
    $env = $decodePayload['data']['environment'];
    $signedTransactionInfo = $decodePayload['data']['signedTransactionInfo'];
    list($trans_header,$trans_payload,$trans_sign) = explode('.', $signedTransactionInfo);
   
    $dtp = base64_decode($trans_payload);
    $data = [
    "transactionId"=> $dtp["transactionId"],
    "originalTransactionId"=> $dtp["originalTransactionId"],
    "bundleId"=> $dtp["bundleId"],
    "productId"=> $dtp["productId"],
    "purchaseDate"=> $dtp["purchaseDate"],
    "originalPurchaseDate"=> $dtp["originalPurchaseDate"],
    "quantity"=> $dtp["quantity"],
    "type"=> $dtp["type"],
    "inAppOwnershipType"=> $dtp["inAppOwnershipType"],
    "signedDate"=> $dtp["signedDate"],
    ];
    return ['code'=>0,'msg'=>'','data'=>$data];
  }

refer:
https://qonversion.io/blog/apples-2021-updates-to-managing-in-app-purchases-from-the-server/

https://developer.apple.com/documentation/appstoreservernotifications/

https://www.purchasely.com/blog/handle-jws-signature-for-apple-in-app-purchases

App Store Server Notifications V2 diffs from App Store Server Notifications V1

you can only get the refund transaction Info this time

you need to check the verify api manually to get older one's status.