How to Install and Use PHP Composer on Ubuntu 18.04
Composer is a dependency manager for PHP. Composer will pull in all the required PHP packages your project depends on and manage them for you.
How to Install PHP on Ubuntu 18.04
In this tutorial we will cover the steps necessary to install the distro's default PHP 7.2 on Ubuntu 18.04. We'll also show you how to install PHP 7.1 and 7.3.
Install PHP 7 on CentOS 7
CentOS 7 ships with PHP version 5.4 which has been officially EOL for quite some time and is no longer supported. In this guide we will explain how to install or upgrade to PHP 7.0, 7.1, 7.2 and 7.3 on CentOS 7