Change Active Version of PHP

If you have several version of PHP installed, you can switch between them at anytime. To change between them you use the update-alternatives command which will display available versions and let you choose which one you want active.

If you have several version of PHP installed, you can switch between them at anytime.

For this example, I have have installed PHP 7.4 and PHP 8.0

To change between them you use the update-alternatives command which will display available versions and let you choose which one you want active:

sudo update-alternatives --config php

To test the active version simply run:

php -v

You also need to tell Apache which module to enable. Below are the commands to disable PHP 7.4 and enable PHP 8.0:

sudo a2dismod php7.4
sudo a2enmod php8.0
sudo systemctl restart apache2

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