Install php7

sudo apt-get install python-software-properties 
sudo add-apt-repository ppa:ondrej/php 
sudo apt-get update 
sudo apt-get install -y php7.0 
sudo apt-get install -y php7.0-common php7.0-cli php7.0-fpm php7.0-curl php7.0-sqlite3 php7.0-json php7.0-tidy php7.0-mysql php7.0-cgi

Start with making a backup in case you mess something up and want to revert.

sudo cp /etc/php/7.0/fpm/php.ini /etc/php/7.0/fpm/php-backup.ini

Now its time to adjust a few settings in the config.

One is REALLY important that you configure for security reasons.

to do this open up the config with>

sudo nano /etc/php/7.0/fpm/php.ini

hit: ctrl+w

put in pathinfo

and you will be taken to the correct section
you will see this line commented out:

;cgi.fix_pathinfo=1

Uncomment and change that to:

cgi.fix_pathinfo=0

then next thing we have to do is increasing the max file size to be upload.

Search again with ctrl+w: upload_max_filesize

change it to 64M instead of 2M which is recommended:

upload_max_filesize = 64M

one last thing that can be nice to edit while we are here is the timezone settings.

date.timezone

you can find the supported timezones here:

http://php.net/manual/en/timezones.php

In my case it’s London both for my target audience and the server!

so I remove the ; to make the setting active and then I add Europe/London:

date.timezone = Europe/London

Afterwards I hit ctrl X and push Y to save the settings.

and then hit Enter when the filename comes up.
Restart php by writing:

sudo service php7.0-fpm restart