Failed to load PDF document in chrome browser

Question

I'm using mPDF library for generating PDF files from HTML page. It is working nice in firefox but it is not display PDF file in chrome browser.

I'm getting following error while generate PDF in chrome.

Following is my code for generate PDF using mPDF

ob_clean();
header('Content-type: application/pdf');
header('Content-Disposition: inline; filename="' . $yourFileName . '"');
header('Content-Transfer-Encoding: binary');
header('Accept-Ranges: bytes');
$mpdf = new PDF( 'c','A4','','',15, 15,10,14,0,0);
$mpdf->useOnlyCoreFonts = false;
$mpdf->SetDisplayMode('real');
$mpdf->list_indent_first_level = 0; // 1 or 0 - whether to indent the first level of a list
$stylesheet = file_get_contents(APPPATH . 'third_party/mpdf/style.css');
$mpdf->WriteHTML($stylesheet,1);
$mpdf->WriteHTML($html);
$mpdf->Output();

Answer 1

In my case, the html of the current page was sent in the pdf (i see it when i open the pdf with a simple text editor).

Solution for me flush + ob_clean before sending header

ob_clean();
flush();
header("Content-type:application/pdf");
header("Content-Disposition:attachment;filename='downloaded.pdf'"); 
echo $result; 
exit;

Answer 2

Agree with @Sébastien Gicquel, however, for my case, I need to put flush+ob_clean right after header but before @readfile.

FYI,my Chrome version is 9.0.3945.79, and the code works well without ob_clean and flush in Firefox and IE.

header('Content-type: application/pdf');
header('Content-Disposition: inline; filename="' .$file. '"');
header('Content-Transfer-Encoding: binary');
header('Accept-Ranges: bytes');
ob_clean();
flush();
@readfile($file);