Slim 3 Framework how to download a file

Question

I am trying to upload a file using Slim 3 PHP Framework. Slim 2 was pretty straight forward, as I'm sure Slim 3 is as well, but I just don't get it.

Any help would be greatly appreciated. Based on the documentation here: http://www.slimframework.com/docs/objects/response.html I added the package from here: https://github.com/guzzle/psr7

So my code at the moment looks like this:

$app->get('/worksheet/download/{filename}', function ($request, $response, $args) {

    error_log("__________________________");

    $fileName = $args['filename'];
    error_log($fileName);
    $newStream = new \GuzzleHttp\Psr7\LazyOpenStream($fileName, 'r');


    $newResponse = $response->withHeader('Content-type', 'application/octet-stream')
        ->withHeader('Content-Description', 'File Transfer')
        ->withHeader('Content-Disposition', 'attachment; filename=' . basename($fileName))
        ->withHeader('Content-Transfer-Encoding', 'binary')
        ->withHeader('Expires', '0')
        ->withHeader('Cache-Control', 'must-revalidate')
        ->withHeader('Pragma', 'public')
        ->withHeader('Content-Length', filesize($fileName))
        ->withBody($newStream);
return($newResponse);
});

Answer 1

I use the read method from php:

$file = 'monkey.gif';

if (file_exists($file)) {
    header('Content-Description: File Transfer');
    header('Content-Type: application/octet-stream');
    header('Content-Disposition: attachment;filename="'.basename($file).'"');
    header('Expires: 0');
    header('Cache-Control: must-revalidate');
    header('Pragma: public');
    header('Content-Length: ' . filesize($file));
    readfile($file);
    exit;
}

, , Slim Response WithHeader.

{filename} [{filename}] , , .

$app->get('/my[/{optional}]/route', function($req, $res, $args) {});
$app->get('/myother/{not_optional}/route', function($req, $res, $args) {});

/my/route, , /myother/route, not_optional .
.

$app->get('/download', function($req, $res, $args) {
    $file = 'public_html/images/back2.jpg';
    $response = $res->withHeader('Content-Description', 'File Transfer')
   ->withHeader('Content-Type', 'application/octet-stream')
   ->withHeader('Content-Disposition', 'attachment;filename="'.basename($file).'"')
   ->withHeader('Expires', '0')
   ->withHeader('Cache-Control', 'must-revalidate')
   ->withHeader('Pragma', 'public')
   ->withHeader('Content-Length', filesize($file));

readfile($file);
return $response;
});

, Slim 3.3.0

Answer 2

$app->get('/test-download', function($request, Slim\Http\Response $response, $args) {
    $file = __DIR__ . '/2.csv';
    $fh = fopen($file, 'rb');

    $stream = new \Slim\Http\Stream($fh); // create a stream instance for the response body

    return $response->withHeader('Content-Type', 'application/force-download')
                    ->withHeader('Content-Type', 'application/octet-stream')
                    ->withHeader('Content-Type', 'application/download')
                    ->withHeader('Content-Description', 'File Transfer')
                    ->withHeader('Content-Transfer-Encoding', 'binary')
                    ->withHeader('Content-Disposition', 'attachment; filename="' . basename($file) . '"')
                    ->withHeader('Expires', '0')
                    ->withHeader('Cache-Control', 'must-revalidate, post-check=0, pre-check=0')
                    ->withHeader('Pragma', 'public')
                    ->withBody($stream); // all stream contents will be sent to the response
});