Php generates and encrypts PDF files

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.

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.

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TCPDF: SetProtection ( $ Permissions = array ('print ', 'modify', 'copy', 'annot-forms', 'fill-forms', 'expact', '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.