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The Art of Modern PHP 8

You're reading from   The Art of Modern PHP 8 Learn how to write modern, performant, and enterprise-ready code with the latest PHP features and practices

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Product type Paperback
Published in Oct 2021
Publisher Packt
ISBN-13 9781800566156
Length 420 pages
Edition 1st Edition
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Author (1):
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Joseph Edmonds Joseph Edmonds
Author Profile Icon Joseph Edmonds
Joseph Edmonds
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Toc

Table of Contents (19) Chapters Close

Preface 1. Section 1 – PHP 8 OOP
2. Chapter 1: Object-Oriented PHP FREE CHAPTER 3. Chapter 2: Inheritance and Composition, Encapsulation and Visibility, Interfaces and Concretions 4. Chapter 3: Advanced OOP Features 5. Section 2 – PHP Types
6. Chapter 4: Scalar, Arrays, and Special Types 7. Chapter 5: Object Types, Interfaces, and Unions 8. Chapter 6: Parameter, Property, and Return Types 9. Section 3 – Clean PHP 8 Patterns and Style
10. Chapter 7: Design Patterns and Clean Code 11. Chapter 8: Model, View, Controller (MVC) Example 12. Chapter 9: Dependency Injection Example 13. Section 4 – PHP 8 Composer Package Management (and PHP 8.1)
14. Chapter 10: Composer For Dependencies 15. Chapter 11: Creating Your Own Composer Package 16. Section 5 – Bonus Section - PHP 8.1
17. Chapter 12: The Awesomeness That Is 8.1 18. Other Books You May Enjoy

Exceptions and error handling

An exception in modern PHP is an object that represents the data for a particular error condition. Exceptions are not generally created with create but instead they are thrown, as in they are created and unleashed with one magic keyword: throw.

If you don't know about exceptions, it's time to hit the docs:

PHP: Exceptions - Manual

https://www.php.net/manual/en/language.exceptions.php

Once an exception is thrown, then it must be caught or it will become a Fatal Error. I always imagine it a bit like setting off the timer on a bomb. The bomb gets passed from handler to handler until it either hits someone who has the right tools to disable it, or we run out of layers that can possibly handle it and it goes off… boom.

We catch exceptions with the catch keyword. The catch keyword is always used with a type hint for what kind of exceptions it will catch. This can be quite specific, or can be totally general by hinting for Throwable...

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