I use angular 6 with PHP and I want to download an excel file using phpspreadsheet. 

When I use the default code 

```
$writer = new Xlsx($spreadsheet);
$writer->save('hello world.xlsx');

```

the file is generated to the php folder without being downloaded and works fine. Now I would like to download it and select where to save it.

I use the code that I found in the documentation

```
// redirect output to client browser
header('Content-Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet');
header('Content-Disposition: attachment;filename="myfile.xlsx"');
header('Cache-Control: max-age=0');

$writer = \PhpOffice\PhpSpreadsheet\IOFactory::createWriter($spreadsheet, 'Xlsx');
$writer->save('php://output');

```

but the file is not downloaded and I get this in my browser:[![enter image description here](https://i.stack.imgur.com/vJCnK.png)](https://i.stack.imgur.com/vJCnK.png)

At the begining of my PHP file I have

```
use PhpOffice\PhpSpreadsheet\Spreadsheet;
use PhpOffice\PhpSpreadsheet\Writer\Xlsx;

$spreadsheet = new Spreadsheet();
$sheet = $spreadsheet->getActiveSheet();

```

My service in Angular is:

```
export_excel(localUserid, date, projectid) {
    return this.http.post(this.apiUrl, {localUserid, date, projectid},
    {
      headers : {
          'Content-Type' : 'application/x-www-form-urlencoded; charset=UTF-8'
      } 
     })
  }

```

I pass some values to PHP.
I tried to change the headers in Angular but nothing worked.
Does anyone knows how to solve it?
Thank you.