Setup PHP

1. Add the below software and repository
   > sudo apt-get install software-properties-common
   > sudo add-apt-repository ppa:ondrej/php
   > sudo apt-get update
2. Install PHP 7.1
   > sudo apt-get install php7.1
   
3. Install common PHP modules
   > sudo apt-get install php7.1 php7.1-cli php7.1-common php7.1-json php7.1-opcache php7.1-mysql php7.1-mbstring php7.1-mcrypt php7.1-zip php7.1-fpm
   
4. Edit the php.ini file
   > sudo vi /etc/php/7.1/cli/php.ini
5. in the php.ini file type /cgi. and hit enter to find the below line and edit
   cgi.fix_pathinfo=0
   
6. Restart the PHP 7.1 service
   > sudo service php7.1-fpm restart
7. Edit the NGINX config to enable PHP
   > sudo vi /etc/nginx/sites-enabled/default
   Remove the comments from the below php settings
   
8. Restart nginx service
   > sudo service nginx restart
9. Enable PHP and nginx to start on reboot
   > sudo systemctl enable nginx.service
   > sudo systemctl enable php7.1-fpm.service