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

Chapter 3. Error Handling and Logging

Effective error handling and logging are essential parts of an application. Early versions of PHP lacked the support for exceptions and only used errors to flag faulty application states. The PHP 5 version brought forth the OOP features to the language and, with it, the exception model. This empowered PHP with the try...catch blocks like other programming languages. Later, the PHP 5.5 version brought support for the finally block, which always executed after the try...catch blocks, regardless of whether an exception was thrown or not.

Nowadays, the PHP language differentiates errors and exceptions as faulty states of an application. Both are raised as unexpected to our application logic. There are numerous types of errors, such as E_ERRORE_WARNINGE_NOTICE, and others. When speaking of errors, we default to the E_ERROR type that tends to signal the end of our application, an unexpected state that an application should not try to catch and continue...