Update PHP on a 1&1 Cloud Server With Plesk

For any 1&1 Cloud Server with Plesk, applications like PHP should always be upgraded and managed through the Plesk interface. Follow the instructions in this tutorial to learn how to install and run PHP on a Plesk server. [...]  

Install and Use PHP Composer on Ubuntu 16.04

PHP Composer is a package management system for PHP which prevents users from having to "reinvent the wheel" when it comes to commonly-used website components like user authentication or database management. Composer is modeled on other popular package management systems like Ruby's Bundler. [...]