Install the PHP GnuPG extension

The GnuPG extension allows you to encrypt and sign your data and communication while featuring a versatile key management system. GnuPG also allows you access to modules for many public key directories.

The GnuPG extension supports PHP 5.6+.

Install the GnuPG extension

Installing the extension involves the following steps:

1. Install build dependencies (packages that are required to build the extension).
2. Build the extension’s library file.
3. Enable the extension in the PHP configuration.

Note

You must be logged into your server as root to install PHP extensions.

Install build dependencies

Set environment variables for the package manager.

export DEBIAN_FRONTEND=noninteractive

Install a compiler and other packages that are required for building PHP extensions.

sudo apt-get -y install gcc g++ make autoconf libc-dev pkg-config

Install additional packages that are required to build the GnuPG extension.

sudo apt-get -y install libgpgme11-dev

Build the extension

The PECL install command compiles the extension’s .so library file.

php8.5

yes '' | sudo pecl8.5-sp install gnupg

php8.4

yes '' | sudo pecl8.4-sp install gnupg

php8.3

yes '' | sudo pecl8.3-sp install gnupg

php8.2

yes '' | sudo pecl8.2-sp install gnupg

php8.1

yes '' | sudo pecl8.1-sp install gnupg

php8.0

yes '' | sudo pecl8.0-sp install gnupg

php7.4

yes '' | sudo pecl7.4-sp install gnupg

php7.3

yes '' | sudo pecl7.3-sp install gnupg

php7.2

yes '' | sudo pecl7.2-sp install gnupg

php7.1

yes '' | sudo pecl7.1-sp install gnupg

php7.0

yes '' | sudo pecl7.0-sp install gnupg

php5.6

yes '' | sudo pecl5.6-sp install gnupg

Enable the extension

Configure PHP to load the extension.

php8.5

sudo bash -c "echo extension=gnupg.so > /etc/php8.5-sp/conf.d/gnupg.ini"

php8.4

sudo bash -c "echo extension=gnupg.so > /etc/php8.4-sp/conf.d/gnupg.ini"

php8.3

sudo bash -c "echo extension=gnupg.so > /etc/php8.3-sp/conf.d/gnupg.ini"

php8.2

sudo bash -c "echo extension=gnupg.so > /etc/php8.2-sp/conf.d/gnupg.ini"

php8.1

sudo bash -c "echo extension=gnupg.so > /etc/php8.1-sp/conf.d/gnupg.ini"

php8.0

sudo bash -c "echo extension=gnupg.so > /etc/php8.0-sp/conf.d/gnupg.ini"

php7.4

sudo bash -c "echo extension=gnupg.so > /etc/php7.4-sp/conf.d/gnupg.ini"

php7.3

sudo bash -c "echo extension=gnupg.so > /etc/php7.3-sp/conf.d/gnupg.ini"

php7.2

sudo bash -c "echo extension=gnupg.so > /etc/php7.2-sp/conf.d/gnupg.ini"

php7.1

sudo bash -c "echo extension=gnupg.so > /etc/php7.1-sp/conf.d/gnupg.ini"

php7.0

sudo bash -c "echo extension=gnupg.so > /etc/php7.0-sp/conf.d/gnupg.ini"

php5.6

sudo bash -c "echo extension=gnupg.so > /etc/php5.6-sp/conf.d/gnupg.ini"

Restart PHP-FPM.

php8.5

sudo service php8.5-fpm-sp restart

php8.4

sudo service php8.4-fpm-sp restart

php8.3

sudo service php8.3-fpm-sp restart

php8.2

sudo service php8.2-fpm-sp restart

php8.1

sudo service php8.1-fpm-sp restart

php8.0

sudo service php8.0-fpm-sp restart

php7.4

sudo service php7.4-fpm-sp restart

php7.3

sudo service php7.3-fpm-sp restart

php7.2

sudo service php7.2-fpm-sp restart

php7.1

sudo service php7.1-fpm-sp restart

php7.0

sudo service php7.0-fpm-sp restart

php5.6

sudo service php5.6-fpm-sp restart

Verify the extension is enabled in PHP.

php8.5

php8.5-sp -i | grep gnupg

php8.4

php8.4-sp -i | grep gnupg

php8.3

php8.3-sp -i | grep gnupg

php8.2

php8.2-sp -i | grep gnupg

php8.1

php8.1-sp -i | grep gnupg

php8.0

php8.0-sp -i | grep gnupg

php7.4

php7.4-sp -i | grep gnupg

php7.3

php7.3-sp -i | grep gnupg

php7.2

php7.2-sp -i | grep gnupg

php7.1

php7.1-sp -i | grep gnupg

php7.0

php7.0-sp -i | grep gnupg

php5.6

php5.6-sp -i | grep gnupg

If the extension is enabled, you will see output like the following.

/etc/php8.4-sp/conf.d/gnupg.ini,
gnupg
gnupg support => enabled

Uninstall the GnuPG extension

Uninstalling the extension involves the following steps:

1. Disable the extension in the PHP configuration.
2. Remove the extension’s library file.

Disable the extension

Remove the extension’s configuration from PHP.

php8.5

sudo rm /etc/php8.5-sp/conf.d/gnupg.ini

php8.4

sudo rm /etc/php8.4-sp/conf.d/gnupg.ini

php8.3

sudo rm /etc/php8.3-sp/conf.d/gnupg.ini

php8.2

sudo rm /etc/php8.2-sp/conf.d/gnupg.ini

php8.1

sudo rm /etc/php8.1-sp/conf.d/gnupg.ini

php8.0

sudo rm /etc/php8.0-sp/conf.d/gnupg.ini

php7.4

sudo rm /etc/php7.4-sp/conf.d/gnupg.ini

php7.3

sudo rm /etc/php7.3-sp/conf.d/gnupg.ini

php7.2

sudo rm /etc/php7.2-sp/conf.d/gnupg.ini

php7.1

sudo rm /etc/php7.1-sp/conf.d/gnupg.ini

php7.0

sudo rm /etc/php7.0-sp/conf.d/gnupg.ini

php5.6

sudo rm /etc/php5.6-sp/conf.d/gnupg.ini

Restart PHP-FPM.

php8.5

sudo service php8.5-fpm-sp restart

php8.4

sudo service php8.4-fpm-sp restart

php8.3

sudo service php8.3-fpm-sp restart

php8.2

sudo service php8.2-fpm-sp restart

php8.1

sudo service php8.1-fpm-sp restart

php8.0

sudo service php8.0-fpm-sp restart

php7.4

sudo service php7.4-fpm-sp restart

php7.3

sudo service php7.3-fpm-sp restart

php7.2

sudo service php7.2-fpm-sp restart

php7.1

sudo service php7.1-fpm-sp restart

php7.0

sudo service php7.0-fpm-sp restart

php5.6

sudo service php5.6-fpm-sp restart

Remove the extension

The PECL uninstall command removes the extension’s .so library file.

php8.5

sudo pecl8.5-sp uninstall gnupg

php8.4

sudo pecl8.4-sp uninstall gnupg

php8.3

sudo pecl8.3-sp uninstall gnupg

php8.2

sudo pecl8.2-sp uninstall gnupg

php8.1

sudo pecl8.1-sp uninstall gnupg

php8.0

sudo pecl8.0-sp uninstall gnupg

php7.4

sudo pecl7.4-sp uninstall gnupg

php7.3

sudo pecl7.3-sp uninstall gnupg

php7.2

sudo pecl7.2-sp uninstall gnupg

php7.1

sudo pecl7.1-sp uninstall gnupg

php7.0

sudo pecl7.0-sp uninstall gnupg

php5.6

sudo pecl5.6-sp uninstall gnupg