CI4 PDF Customized

That's not a CodeIgniter problem, as it loading the library. That's a TCPDF problem and I'm guessing it's do to the fact you aren't sending any application/pdf headers from your server.

By coincidence, I've just spent the last 2 hrs fighting hard with the same problem and I don't believe it has anything to do with tcpdf because I have tried it with a regular pdf from elsewhere. Using force_download in ci3 has worked perfectly for the past 2/3 years. I've tried every combination of the following code and nothing works. If I enable the line "

Code:

setContentType('application/pdf')

" then Chrome reports "unable to download" but firefox reports "might not be displayed correctly" and using "open with different viewer" dialog says the document has 0 bytes

Code:

return $this->response//->setHeader('Pragma','public')
        //->setHeader('Expires','0')
        //->setHeader('Cache-Control','must-revalidate, post-check=0, pre-check=0')
        //->setHeader('Content-Disposition','inline; filename="'.$filename.'"')
        //->setContentType('application/pdf')
        //->setHeader('Content-Length',filesize($fullname))
        ->download($fullname);//'',true);//,$data);

I can create pdf files with tcpdf in ci4 and view them standalone with no problem but am unable to download via ci4.
Bill