PHP Page (QRCode generation, and PDF encryption)

PHP page that wii: 1. generate QR Codes (based on arguments passed to it) 2. stamp existing PDF documents with the generated QR Code 3. encrypt the generated PDF with a standard PDF password. You are writing a PHP page that will be integrated into an existing site. The page’s main purpose is to modify .pdf documents on the server by placing a QR code onto the .pdf and then serving the modified .pdf to the user… essentially customizing the original .pdf on the server for each user. There will be some unencrypted PDF documents on the server that need to be modified for each individual user accessing the site based on some application logic outside of your page. Each time we call your page, it needs to open one of the original PDF documents, create a unique QRCode (based on some content we pass to your page), encrypt it with a standard PDF password, save the modified version of PDF to server’s local disk, and serve it to the user. The content of the QRCode will be URL plus a farily long QueryString. So your page should provide the option of sending this URL+QueryString to TinyURL for shortening.