Answers for "how change php version ubuntu"

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

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