https://portal.databasemart.com/kb/a2136/how-to-install-php-8_1-for-nginx-on-ubuntu-20_04.aspx
Check installed versions of PHP and set the default PHP version
sudo update-alternatives --config php
https://portal.databasemart.com/kb/a2136/how-to-install-php-8_1-for-nginx-on-ubuntu-20_04.aspx
Check installed versions of PHP and set the default PHP version
sudo update-alternatives --config php