The php-gnupg is a wrapper for GpgME library that provides access to GnuPG.
Before starting with installation of this extensions, the GpgME
library has to be installed. It
has got installation packages on the most Linux distributions. The minimal version of GpgME that
is supported is 1.3.0. The extension supports GnuPG version 1 and 2.
Of course PHP has to be installed too. The minimal version that is supported is 5.3.2.
This extension is available on PECL.
$ sudo pecl install gnupg
It's important to have a git installed as it's necessary for recursive fetch of phpc.
First clone recursively the repository
git clone --recursive https://github.com/php-gnupg/php-gnupg.git
Then go to the created directory and compile the extension. The PHP development package has to be
installed (command phpize
must be available).
cd php-gnupg
phpize
./configure
make
sudo make install
Finally the following line needs to be added to php.ini
extension=gnupg.so
or for PHP 8+ it's just
extension=gnupg
The extension is not currently supported on Windows due to unavailable GpgME library builds that would be supported by PHP.
The extension documentation is now available in the PHP-Manual: http://php.net/manual/en/book.gnupg.php