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

PSR-7 - HTTP message interface


The HTTP protocol has been around for quite some time now. Its development was initiated by Tim Berners-Lee at CERN way back in 1989. Throughout the years, Internet Engineering Task Force (IETF) and the World Wide Web Consortium (W3C) defined series of standards for it, known as Requests for Comments (RFCs). The first definition of HTTP/1.1 occurred in RFC 2068 in 1997, and was later deprecated by RFC 2616 in 1999. Over a decade later, HTTP/2 was standardized in 2015. Although HTTP/2 is now supported by major web servers, HTTP/1.1 is still widely used.

The underlying HTTP communication comes down to requests and responses, commonly referred to as HTTP messages. Abstracted away from average consumers, these messages form the foundation of web development, and are therefore of interest to every web application developer. While RFC 7230, RFC 7231, and RFC 3986 spec out the details of HTTP itself, PSR-7 describes common interfaces for representing the HTTP messages...