PHPExcel excel2007 php output with charts - php

Question

I use latest PHPExcel library for creating .xls, .xlsx files. When i try to output created file like this:
ob_end_clean();
$file = 'test.xls';
header('Content-Type: application/vnd.ms-excel; charset=UTF-8');
header('Content-Disposition: attachment; filename="'.$file.'"');
header('Cache-Control: max-age=0');
header('Cache-Control: max-age=1');
$objPHPWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel5');
$objPHPWriter->setIncludeCharts(TRUE);
$objPHPWriter->save('php://output');
exit;
everything is fine until I try to create and output any charts. So i changed my code according to example:
ob_end_clean();
$objPHPWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel2007');
$objPHPWriter->setIncludeCharts(TRUE);
$objPHPWriter->save(str_replace('.php', '.xlsx', __FILE__));
exit;
This is working, but the file is not downloaded. So i modified code to output created file:
ob_end_clean();
$file = 'test.xlsx';
header('Content-Type: Content-Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet; charset=UTF-8');
header('Content-Disposition: attachment; filename="'.$file.'"');
header('Cache-Control: max-age=0');
header('Cache-Control: max-age=1');
$objPHPWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel2007');
$objPHPWriter->setIncludeCharts(TRUE);
$objPHPWriter->save('php://output');
exit;
And this is not working, ends up with ERR_INVALID_RESPONSE.
Also when i store excel file with charts with second code block, it's not compatibile with MS Excel 2016. It says the file is corrupted and the data were replaced or deleted. What am I missing? Thanks a lot.

Answer 1

I figured out one simple solution, first step is to store created .xlsx file, second is to download file with header("Location:"). Redundant files are deleted with array_map function.
array_map('unlink', glob( __DIR__."/*.xlsx"));
$file = 'test.xlsx';
$objPHPWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel2007');
$objPHPWriter->setIncludeCharts(TRUE);
$objPHPWriter->save($file);
header("Location: $file");