# From PHP 7.1 => PHP 5.6
#Apache
sudo a2dismod php7.1
sudo a2enmod php5.6
sudo service apache2 restart
#command Line
sudo update-alternatives --set php /usr/bin/php5.6sudo update-alternatives --config php
sudo service nginx restart
sudo service php7.1-fpm or php7.2-fpm restart
alias setphp="sudo update-alternatives --config php;sudo update-alternatives --config phar; update-alternatives --config phar.phar; a2dismod php*.*;systemctl restart apache2"
Put the above alias in the
sudo nano ~/.bashrc
#After the above command just run this command
a2enmod php<Your Desired Version> # like, a2enmod php7.4
Now you can run command "setphp" from your terminal.