Update to PHP 7

`` sudo add-apt-repository ppa:ondrej/php sudo apt-get install -y language-pack-en-base sudo LC_ALL=en_US.UTF-8 add-apt-repository ppa:ondrej/php

sudo apt-get update sudo apt-get install php7.0 sudo apt-get install php7.0-mysql

sudo apt-get install php7.0-mbstring sudo apt-get install libapache2-mod-php7.0

sudo apt install php libapache2-mod-php

sudo a2dismod php5 sudo a2enmod php7.0

sudo apt-get install php-xml sudo apt-get install php7.1-mbstring sudo apt-get install php7.0-intl

sudo apt-get install php7.0-curl php7.0-mbstring php7.0-zip php7.0-xml

`` https://www.digitalocean.com/community/tutorials/how-to-upgrade-to-php-7-on-ubuntu-14-04

https://askubuntu.com/questions/760907/upgrade-to-16-04-php7-not-working-in-browser