Slim Framework - Export Excel and CSV

Daniel Opitz
Daniel Opitz
16 Dec 2017

I would like to show you how to create Excel files and download them automatically.

To create Excel files I’m using PhpSpreadsheet.


To install PhpSpreadsheet run:

composer require phpoffice/phpspreadsheet


Create a new route:


use PhpOffice\PhpSpreadsheet\Shared\File;
use PhpOffice\PhpSpreadsheet\Spreadsheet;
use PhpOffice\PhpSpreadsheet\Writer\Xlsx;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestInterface;
use Slim\Http\Stream;

$app->get('/excel', function (ServerRequestInterface $request, ResponseInterface $response) {
    $excel = new Spreadsheet();

    $sheet = $excel->setActiveSheetIndex(0);
    $cell = $sheet->getCell('A1');

    $excelWriter = new Xlsx($excel);

    // We have to create a real temp file here because the
    // save() method doesn't support in-memory streams.
    $tempFile = tempnam(File::sysGetTempDir(), 'phpxltmp');

    // For Excel2007 and above .xlsx files   
    $response = $response->withHeader('Content-Type', 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet');
    $response = $response->withHeader('Content-Disposition', 'attachment; filename="file.xlsx"');

    $stream = fopen($tempFile, 'r+');

    return $response->withBody(new Stream($stream));

If you want to return the entire content at once, you could use this workaround:

$stream = fopen($tempFile, 'r+');

$response->getBody()->write(fread($stream, (int)fstat($stream)['size']));

return $response;

Then open the url: http://localhost/excel and the download should start automatically.