php-cpm

<?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;
  }