Protecting a PDF while still allowing printing is a sensitive decision in any DRM workflow. Before enabling printing, it is absolutely critical to understand the security implications. Once printing is allowed, the document can be printed to a virtual printer,
How to integrate VeryPDF DRM Protector into PHP — a line-by-line guide to drm-protector-phpcurl.php
Below is an article aimed at PHP developers who want to automatically upload a PDF to VeryPDF’s online DRM/enciphering service using PHP + cURL. It explains what the example script does, how to run it, and what every POST parameter