MPDF创建只读pdf文件？

Question

I'm using mpdf to download an existing file like this-

$mpdf->Output('my_filename.pdf','D'); 

I need the file downloaded to be read only. Right now the downloaded files can be opened in word and edited, I wish to avoid that.

TL;DR : I'm downloading an existing file from my system which my clients can edit by opening in word, need to avoid that.I can't have password protection for the files(client requirement)

Answer 1

Use the SetProtection() function as described here.

$filename = 'filename.pdf';
$html = 'Testing PDF protection.';
$mpdf = new mPDF('utf-8', 'A4-P');
$mpdf->SetProtection(array());
$mpdf->WriteHTML($html);
$mpdf->Output($filename,'D');