How to handle Adobe PDF Restrictions in-house?

Question

I would like to set up an in-house system to manage Adobe PDF restrictions. We are currently contracting a company that uses Adobe Content Server but want this to become an in-house system.

Are there any PHP or Perl libraries/scripts that will allow us to apply unique identifiers to an Adobe PDF document when it is downloaded so we can manage policy settings on our own server? Has anyone developed a non-Adobe solution to policy management who could share the information?

Answer 1

http://us3.php.net/manual/en/ref.pdf.php