Php generates and encrypts PDF files

This article describes how to use php to generate a PDF file and encrypt the file or set an access password. For more information, see.

This article describes how to use php to generate a PDF file and encrypt the file or set an access password. For more information, see.

Project requirement: php generates a PDF file and encrypts the file or sets an access password.

Open-source TCPDF is a PHP-based class library that can generate PDF documents. File encryption is also supported and widely used in open-source PHP frameworks, systems, and applications. Here is the method prototype for setting the relevant attributes of the PDF document, where the password can be set.

TCPDF: SetProtection ($ permissions = array ('print ', 'modify', 'copy', 'annot-form', 'fill-form', 'expiter ', 'assemble', 'print-high'), $ user_pass = '', $ owner_pass = null, $ mode = 0, $ pubkeys = null)

After the SetProtection () method is set, the generated PDF file is encrypted. When the user opens the PDF file, the user needs to enter the access password.