Does anyone know some good GnuPG Libraries for encryption/decryption using PHP?

A PECL php extension is available for gnupg. for installation please check http://www.php.net/manual/en/gnupg.installation.php for list of functions, you can check: http://www.php.net/manual/en/ref.gnupg.php

If you're looking for just encrypt and decrypt your data then you can use an open source PHP class as https://gist.github.com/niczak/2501891 To install any library on your web hosting then you need to first check your hosting because on shared hosting, mostly support doesn't allow you to install any third party libraries. Thanks Raheel