When you're designing web applications such as Application Programming Interfaces (APIs), sorting data is vital. Sorting makes it easier for end-users to read and understand the data. For instance, finding a customer from an alphabetical list of names is faster. In this guide, you'll use PHP and MySQL functions to set up the functionality of sorting data on multiple fields with URL parameters on a web resource. Make sure you have the following: * An Ubuntu 20.04 server. * A [sudo user](https://d......