How to install the `sodium` extension if your PHP version hasn't it directly in Ubuntu 22.04?

Prerequisites:

Indeed, the prerequisite packages and dependencies are crucial for successfully installing and configuring the sodium extension in your XAMPP environment. Installing autoconf, libsodium-dev, and ensuring the correct paths and configurations are essential for a successful installation.

If you don't have autoconf then you can download it.

sudo apt-get update
sudo apt-get install autoconf

To install libsodium-dev run the following commands:

sudo apt-get install libsodium-dev

Download the sodium extension source code from the PECL website using the following command:

•   wget https://pecl.php.net/get/libsodium
  

• Extract the downloaded archive:

•   tar -xf libsodium
  

• Navigate into the extracted directory:

•   cd libsodium-*
  

  Build and install the extension:

•   sudo /opt/lampp/bin/phpize
    ./configure --with-php-config=/opt/lampp/bin/php-config
    make
    sudo make install
  

• Once the installation is complete, you must enable the sodium extension in PHP. Open the php.ini file in a text editor:

•   sudo nano /opt/lampp/etc/php.ini
  

• Add the following line at the end of the php.ini file:

•   extension=sodium
  

• Save the file and exit the text editor.

• Restart the XAMPP server:

    sudo /opt/lampp/lampp restart
  

After following these steps, the sodium extension should be installed and enabled in your XAMPP environment. You can verify the installation by running the php -m command, which should display sodium in the list of installed modules without any warning messages.