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!

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PHP 7 Programming Blueprints
Jose Palala | Martin Helmich
Oct, 2016 | 320 pages
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Table of Contents (15 chapters)
PHP 7 Programming Blueprints
PHP 7 Programming Blueprints
Credits
Credits
About the Authors
About the Authors
About the Reviewer
About the Reviewer
www.PacktPub.com
www.PacktPub.com
Preface
Preface
Free Chapter
1
Create a User Profile System and use the Null Coalesce Operator
Create a User Profile System and use the Null Coalesce Operator
The null coalesce operator
Separation of Concerns
Creating views
Create a profile input form
Admin system
Summary
2
Build a Database Class and Simple Shopping Cart
Build a Database Class and Simple Shopping Cart
Building the database abstraction class
Shopping Cart
Installing TCPDF
Admin for managing purchases
Summary
3
Building a Social Newsletter Service
Building a Social Newsletter Service
Authentication system
Summary
4
Build a Simple Blog with Search Capability using Elasticsearch
Build a Simple Blog with Search Capability using Elasticsearch
Creating the CRUD and admin system
5
Creating a RESTful Web Service
Creating a RESTful Web Service
RESTful basics
First steps with the Slim framework
Implementing the REST service
Streams and large files
Summary
6
Building a Chat Application
Building a Chat Application
The WebSocket protocol
First steps with Ratchet
Implementing the chat application
Deployment options
Bridging Ratchet and PSR-7 applications
Accessing your application via the web server
Adding authentication
Summary
7
Building an Asynchronous Microservice Architecture
Building an Asynchronous Microservice Architecture
The target architecture
ZeroMQ patterns
Bootstrapping the project
Building the inventory service
Making the inventory service multithreaded
Building the checkout service
Building the mailing service
Building the shipping service
Bridging ZeroMQ and HTTP
Summary
8
Building a Parser and Interpreter for a Custom Language
Building a Parser and Interpreter for a Custom Language
How interpreters and compilers work
Languages and grammars
Your first PEG parser
Evaluating expressions
Building an Abstract Syntax Tree
Building a better interface
Evaluating variables
Adding logical expressions
Working with structured data
Working with objects
Optimizing the interpreter by adding a compiler
Verifying performance improvements
Summary
9
Reactive Extensions in PHP
Reactive Extensions in PHP
An introduction to observables
Introduction to event loop and ReactiveX
Parsing logs through a Reactive scheduler
Event queues with ReactiveX
Summary

Implementing the chat application

After this short introduction in the development with WebSockets, let us now begin implementing the actual chat application. The chat application will consist of the server-side application built in PHP with Ratchet, and an HTML and JavaScript-based client that will run in the user's browser.

Bootstrapping the project server-side

As mentioned in the previous section, applications based on ReactPHP will achieve the best performance when used with an event-loop extension such as libevent or ev. Unfortunately, the libevent extension is not compatible with PHP 7, yet. Luckily, ReactPHP also works with the ev extension, whose latest version already supports PHP 7. Just like in the previous chapter, we'll be working with Docker in order to have a clean software stack to work on. Start by creating a Dockerfile for your application container:

FROM php:7 
RUN pecl install ev-beta && \ 
    docker-php-ext-enable ev 
WORKDIR /opt/app 
CMD ["/usr/local/bin/php...
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