Google Wallet response demo handler

responsedemohandler.php

<?php
  error_reporting(E_ALL);
  require_once('library/googleresponse.php');
  require_once('library/googlemerchantcalculations.php');
  require_once('library/googleresult.php');
  require_once('library/googlerequest.php');
  define('RESPONSE_HANDLER_ERROR_LOG_FILE', 'googleerror.log');
  define('RESPONSE_HANDLER_LOG_FILE', 'googlemessage.log');

  $merchant_id = "Your Merchant ID"
  $merchant_key = "Your Merchant Key"
  $server_type = "sandbox";
  $currency = 'USD';
  $certificate_path = "";
  $Gresponse = new GoogleResponse($merchant_id, $merchant_key);
  $Gresponse->SetLogFiles(RESPONSE_HANDLER_ERROR_LOG_FILE, 
                                        RESPONSE_HANDLER_LOG_FILE, L_ALL);
  $xml_response = isset($HTTP_RAW_POST_DATA)?
                    $HTTP_RAW_POST_DATA:file_get_contents("php://input");
  if (get_magic_quotes_gpc()) {
    $xml_response = stripslashes($xml_response);
  }
  list($root, $data) = $Gresponse->GetParsedXML($xml_response);
  switch ($root) {
   case "authorization-amount-notification": {
      $google_order_number = $data[$root]['google-order-number']['VALUE']; 
      $GChargeRequest = new GoogleRequest($merchant_id, $merchant_key, $server_type);
      $GChargeRequest->SendChargeAndShipOrder($google_order_number); 
      $Gresponse->sendAck($data[$root]['serial-number']);
      break;
    }
    case "charge-amount-notification":{
      $items = get_arr_result($data[$root]['order-summary']['shopping-cart']['items']['item']);
      $googleid = $data[$root]['google-order-number']['VALUE'];
      foreach( $items as $item ) {      
        $userid =$item['item-name']['VALUE'];
        if(isset($userid)){
          $amount = $data[$root]['total-charge-amount']['VALUE'];
          $date = $data[$root]['timestamp']['VALUE']; 
          $tmpsql = "INSERT into orders(google_id, amount, userid) VALUES('".$googleid."', '".$amount."','".$userid . "')";
          if(! $sqlresult=mysql_query($tmpsql)) {
            $Gresponse->log->LogError(mysql_error());
          }
        }
      }
      $Gresponse->sendAck($data[$root]['serial-number']);
      break;
    }
    default:
      $Gresponse->sendAck($data[$root]['serial-number']);
      break;
  }

  function get_arr_result($child_node) {
    $result = array();
    if(isset($child_node)) {
      if(is_associative_array($child_node)) {
        $result[] = $child_node;
      }
      else {
        foreach($child_node as $curr_node){
          $result[] = $curr_node;
        }
      }
    }
    return $result;
  }

  function is_associative_array( $var ) {
    return is_array( $var ) && !is_numeric( implode( '', array_keys( $var ) ) );
  }
?>