How to display "save as" dialog in ZF2?

Question

Zend Framework

There is a form page. The user uploads the file and submits the form. xml file is generated.
How in Zend Framework to save the generated content by the user moss using the "save" dialog and after that the same page was shown to him?
The option with "save to the server, issue a download link" is not suitable.

Answer 1

The ZF2 way involves using the framework code to work with headers, and therefore:

$type = 'text/xml';
$data = '...';
$fileName = 'data.xml';

$response = $this->getResponse();
$response->setContent($data);

$headers = new \Zend\Http\Headers();
$headers->addHeaderLine('Content-Type', $type)
        ->addHeaderLine('Content-Disposition', 'attachment; filename="' . $fileName . '"')
        ->addHeaderLine('Content-Length', strlen($data));

$response->setHeaders($headers);
return $response;

If you are reading from a file, then the first block with $response should be replaced with:

$response = new \Zend\Http\Response\Stream();
$response->setStream(fopen($fileName, 'r'));
$response->setStatusCode(200);

or transfer to work with "X-Accel-Redirect"

Answer 2

...
$xml = "...";  // XML-данные
header('Content-type: text/xml');
header('Content-Disposition: attachment; filename="data.xml"');
header('Cache-Control: max-age=0');

echo $xml;
die();