title: Is it possible to remove a Password from a PDF file using PHP?
body: <p>I would like to ask if it's possible to use PHP in removing a password from a password-protected PDF file in which I already know the password? I've seen <a href="http://www.cyberciti.biz/faq/removing-password-from-pdf-on-linux/" rel="noreferrer">this page</a> which provides many options but using bash script. :( I was required to use PHP as much as possible. Any suggestions appreciated!</p>