Book Image

PHP 7 Programming Blueprints

By : Jose Palala, Martin Helmich
Book Image

PHP 7 Programming Blueprints

By: Jose Palala, Martin Helmich

Overview of this book

When it comes to modern web development, performance is everything. The latest version of PHP has been improvised and updated to make it easier to build for performance, improved engine execution, better memory usage, and a new and extended set of tools. If you’re a web developer, what’s not to love? This guide will show you how to make full use of PHP 7 with a range of practical projects that will not only teach you the principles, but also show you how to put them into practice. It will push and extend your skills, helping you to become a more confident and fluent PHP developer. You’ll find out how to build a social newsletter service, a simple blog with a search capability using Elasticsearch, as well as a chat application. We’ll also show you how to create a RESTful web service, a database class to manage a shopping cart on an e-commerce site and how to build an asynchronous microservice architecture. With further guidance on using reactive extensions in PHP, we’re sure that you’ll find everything you need to take full advantage of PHP 7. So dive in now!
Table of Contents (15 chapters)
PHP 7 Programming Blueprints
Credits
About the Authors
About the Reviewer
www.PacktPub.com
Preface
4
Build a Simple Blog with Search Capability using Elasticsearch

Adding authentication


Currently, our application is missing one crucial feature: anyone can post messages in the chat, and there is also no way to determine which user sent which message. Because of this, in the next step, we will add an authentication layer to our chat application. For this, we'll need a login form and some kind of authentication handler.

In this example, we will use a typical session-based authentication. After successfully authenticating the username and password, the system will create a new session for the user and store the (random and non-guessable) session ID in a cookie on the user's browser. On subsequent requests, the authentication layer can use the session ID from the cookie to look up the currently authenticated user.

Creating the login form

Let's start by implementing a simple class for managing sessions. This class will be named Packt\Chp6\Authentication\SessionProvider:

namespace Packt\Chp6\Authentication; 
 
class SessionProvider 
{ 
    private $users = [...