PHP

switch php version ubuntu

# Interactive Way
sudo update-alternatives --config php

switch php version ubuntu

# 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/php5.6

switch between php version ubuntu nginx

sudo update-alternatives --config php

switch between php version ubuntu nginx

sudo service nginx restart
sudo service php7.1-fpm or php7.2-fpm  restart

switch php version ubuntu

$ sudo update-alternatives --set php /usr/bin/php7.1
$ sudo update-alternatives --set phar /usr/bin/phar7.1
$ sudo update-alternatives --set phar.phar /usr/bin/phar.phar7.1

how switch php version in ubuntu

 sudo update-alternatives --set php /usr/bin/php5.6

switch between php version ubuntu

  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.