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Mastering PHP 7

You're reading from   Mastering PHP 7 Design, configure, build, and test professional web applications

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Product type Paperback
Published in Jun 2017
Publisher Packt
ISBN-13 9781785882814
Length 536 pages
Edition 1st Edition
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Author (1):
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Branko Ajzele Branko Ajzele
Author Profile Icon Branko Ajzele
Branko Ajzele
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Table of Contents (18) Chapters Close

Preface 1. The All New PHP FREE CHAPTER 2. Embracing Standards 3. Error Handling and Logging 4. Magic Behind Magic Methods 5. The Realm of CLI 6. Prominent OOP Features 7. Optimizing for High Performance 8. Going Serverless 9. Reactive Programming 10. Common Design Patterns 11. Building Services 12. Working with Databases 13. Resolving Dependencies 14. Working with Packages 15. Testing the Important Bits 16. Debugging, Tracing, and Profiling 17. Hosting, Provisioning, and Deployment

Structural patterns

In this section, we will take a look at a structural pattern: the decorator pattern.

The decorator pattern

The decorator pattern is a simple one. It allows us to add new behavior to object instances without affecting other instances of the same class. It basically acts as a decorating wrapper around our object. We can imagine a simple use case with a Logger class instance, where we have a simple logger class that we would like to occasionally decorate, or wrap into a more specific error, warning, and notice level logger.

The following example demonstrates a possible decorator pattern implementation:

<?php

interface LoggerInterface
{
public function log($message);
}

class...
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