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

Reflection


Reflection is a highly important concept every developer should be wary about. It denotes the ability of a program to inspect itself during runtime, thus allowing easy reverse-engineering of classes, interfaces, functions, methods, and extensions.

We can get a quick taste of the PHP reflection capabilities right from the console. The PHP CLI supports several reflection-based commands:

  • --rf <function name>: This shows information about a function
  • --rc <class name>: This shows information about a class
  • --re <extension name>: This shows information about an extension
  • --rz <extension name>: This shows information about the Zend extension
  • --ri <extension name>: This shows the configuration for an extension

The following output demonstrates the result of the php --rf str_replace command:

Function [ <internal:standard> function str_replace ] {
  - Parameters [4] {
     Parameter #0 [ <required> $search ]
     Parameter #1 [ <required> $replace...