Answers for "ubuntu how to change default php version"

change php version ubuntu

//In ubunutu
Default PHP 7.1 is set on your system and you need to switch to PHP 5.6

$ sudo a2dismod php7.1
$ sudo a2enmod php5.6
$ sudo service apache2 restart
  
sudo update-alternatives --set php /usr/bin/php5.6

change php version in ubuntu

sudo update-alternatives --config php
sudo update-alternatives --config phar
sudo update-alternatives --config phar.phar