I had the same problem. The issue is that the response returns the result for you to compare the received file against to verify no corruption during transmission. To get xml response with Message you should save it to file not to php://memory. So the next code works for me fine
$filename = __DIR__.'/file.xml';
$handle = fopen($filename, 'w+');
$request = new MarketplaceWebService_Model_GetFeedSubmissionResultRequest();
$request->setMerchant(MERCHANT_ID);
$request->setFeedSubmissionId(ID_TO_CHANGE);
$request->setFeedSubmissionResult($handle);
try {
$response = $service->getFeedSubmissionResult($request);
fclose($handle);
echo ("Service Response\n");
echo ("=============================================================================\n");
echo(" GetFeedSubmissionResultResponse\n");
if ($response->isSetGetFeedSubmissionResultResult()) {
$getFeedSubmissionResultResult = $response->getGetFeedSubmissionResultResult();
echo (" GetFeedSubmissionResult");
if ($getFeedSubmissionResultResult->isSetContentMd5()) {
echo (" ContentMd5");
echo (" " . $getFeedSubmissionResultResult->getContentMd5() . "\n");
}
}
if ($response->isSetResponseMetadata()) {
echo(" ResponseMetadata\n");
$responseMetadata = $response->getResponseMetadata();
if ($responseMetadata->isSetRequestId())
{
echo(" RequestId\n");
echo(" " . $responseMetadata->getRequestId() . "\n");
}
}
echo(" ResponseHeaderMetadata: " . $response->getResponseHeaderMetadata() . "\n");
} catch (MarketplaceWebService_Exception $ex) {
echo("Caught Exception: " . $ex->getMessage() . "\n");
echo("Response Status Code: " . $ex->getStatusCode() . "\n");
echo("Error Code: " . $ex->getErrorCode() . "\n");
echo("Error Type: " . $ex->getErrorType() . "\n");
echo("Request ID: " . $ex->getRequestId() . "\n");
echo("XML: " . $ex->getXML() . "\n");
echo("ResponseHeaderMetadata: " . $ex->getResponseHeaderMetadata() . "\n");
}
the result you can find in ./file.xml file this helped me