Installing PHP7 on Ubuntu is very simple. Once you are logged on to your Ubuntu instance, launch Terminal if in GUI or just issue the commands below (server – without GUI):
Install PHP without Apache2
For only when you want to install PHP Command Line Interface to run PHP scripts without a web server
sudo apt-get install php-cli
If you have Apache2 Web Server installed
– follow this guide to install Apache2 Web Server if not already installed
sudo apt-get install php libapache2-mod-php
Verify the packages that will be installed, then type y for yes and press Enter
Thats it! To verify that PHP is working, create a new phpinfo file in your Apache2 directory (default – /var/www/html/) and name it info.php
sudo vi /var/www/html/info.php
This will create a new blank file in /var/www/html/ called info.php
Write the code below in the file then save and close
<?php phpinfo(); ?>
In your browser, navigate to your phpinfo file, if all worked, you should see your PHP information like in the screenshot below