➥ rollback php 7 to php 5.6

1. Първо малко действие :)

sudo add-apt-repository ppa:ondrej/php

sudo apt-get update

sudo apt-get install php7.0 php5.6 php5.6-mysql php-gettext php5.6-mbstring php-xdebug libapache2-mod-php5.6 libapache2-mod-php7.



2. Switch PHP version:

From php5.6 to php7.0 :
Apache:
sudo a2dismod php5.6 ; sudo a2enmod php7.0 ; sudo service apache2 restart

CLI:
update-alternatives --set php /usr/bin/php7.0

from php7.0 to php5.6 :
Apache:
sudo a2dismod php7.0 ; sudo a2enmod php5.6 ; sudo service apache2 restart

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