Book Image

Mastering PHP 7

By : Branko Ajzele
Book Image

Mastering PHP 7

By: Branko Ajzele

Overview of this book

PHP is a server-side scripting language that is widely used for web development. With this book, you will get a deep understanding of the advanced programming concepts in PHP and how to apply it practically The book starts by unveiling the new features of PHP 7 and walks you through several important standards set by PHP Framework Interop Group (PHP-FIG). You’ll see, in detail, the working of all magic methods, and the importance of effective PHP OOP concepts, which will enable you to write effective PHP code. You will find out how to implement design patterns and resolve dependencies to make your code base more elegant and readable. You will also build web services alongside microservices architecture, interact with databases, and work around third-party packages to enrich applications. This book delves into the details of PHP performance optimization. You will learn about serverless architecture and the reactive programming paradigm that found its way in the PHP ecosystem. The book also explores the best ways of testing your code, debugging, tracing, profiling, and deploying your PHP application. By the end of the book, you will be able to create readable, reliable, and robust applications in PHP to meet modern day requirements in the software industry.
Table of Contents (24 chapters)
Title Page
Credits
About the Author
About the Reviewers
www.PacktPub.com
Customer Feedback
Preface
16
Debugging, Tracing, and Profiling

Understanding Composer


Composer is a per-project package manager for PHP. Originally released in 2011, it quickly caught up and became a favorite package manager among PHP developers. Just by looking at its GitHub statistics, we can see the project is being actively developed by the community:

Nowadays, it is an integral part of almost every popular PHP project. Installing Composer is a pretty straightforward task. Assuming we are using the fresh Ubuntu 16.10 (Yakkety Yak) installation, the following command outlines how we can install Composer:

sudo apt-get -y install composer

Running composer -v after the installation should show the output similar to the following screenshot: 

Now that we have it installed, using Composer is quite simple. Assuming we have an existing project to which we would like to add the Twig library, we can do so just by running the following command within our project root directory:

composer require "twig/twig:^2.0"

Upon execution, two files and a directory are created...