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Editorial Team
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Asked: 2026-06-05T08:31:36+00:00

$workbook = new PHPExcel(); $workbook->createSheet()->setTitle(‘whatt’)->setCellValue( ‘A1’, ‘Another sheet’ ); $workbook->createSheet()->setTitle(‘whatt’)->setCellValue( ‘A1’, ‘Another sheet’ );

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$workbook = new PHPExcel();
$workbook->createSheet()->setTitle('whatt')->setCellValue( 'A1', 'Another sheet' );
$workbook->createSheet()->setTitle('whatt')->setCellValue( 'A1', 'Another sheet' );
$objWriter = new PHPExcel_Writer_Excel2007($workbook);
$objWriter->setOffice2003Compatibility(true);

ob_start();
$objWriter->save( "php://output" );
$contents = ob_get_contents();
ob_end_clean();



// required for IE, otherwise Content-disposition is ignored
if(ini_get('zlib.output_compression'))
  ini_set('zlib.output_compression', 'Off');

$size = count($contents);

header("Pragma: public");
header("Expires: 0");
header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
header("Cache-Control: private",false);
header('Content-Type: application/vnd.msexcel; charset=utf-8');
header("Content-Disposition: attachment; filename=\"test.xlsx\"");
header("Content-Transfer-Encoding: binary");
header("Content-Length: {$size}");
echo $contents;
exit;

When I download the sheet it comes down as 1 byte, with one sheet where the first cell is “P” ( because the file only contains that letter )
If I comment out the second createSheet line it works perfect. Any idea?

EDIT

I accepted the answer below which told me it wasn’t PHPExcel’s fault and it wasn’t.
If I remove the headers and keep output buffering, as a test, it still works.

ob_start();
$objWriter->save( "php://output" );
$contents = ob_get_contents();
ob_end_clean();

file_put_contents( "/mypath/uploads/test.xlsx", $contents );

I can download the file no problem. This leads me to believe the headers are screwing it up somehow, which is very bizarre considering there’s no issue if I only used createSheet once. I guess I’ll post that here when I figure it out.

….

And I figured out why the headers were messing it up. Apparently using count($contents) with one added sheet was fine, but with two added sheets it would only return 1. I changed it to strlen($contents) and it worked. Bonus points if anyone can tell me why that happened 🙂

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1 Answer

  1. Editorial Team

    No idea without a lot of debugging. Get rid of the redundant output buffering, and it works. This is the cause of your problem, nothing in PHPExcel.
    So what are you doing subsequently with $contents?

    Calling createSheet() twice in a row isn’t corrupting anything: though why are you trying to create a workbook containing two worksheets with the same title anyway? PHPExcel will actually rename the second added worksheet as whatt2 to avoid problems.

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