Object-Oriented PHP

  
Last updated December 13, 2021
Module DevelopmentDrupal 9Drupal 8

Object-oriented PHP utilizes classes and objects to organize code into reusable chunks. This approach helps us organize complex applications, such as Drupal, into modular code called classes that can be reused across the entire system. As a module developer, knowledge of object-oriented PHP is essential in order to understand the architecture of a module and the various forms it can take as well as how to implement custom functionality.

Example tasks

Confidence

Learning modern object-oriented PHP practices is a skill that will benefit you not only as a Drupal 8 developer but also as a PHP developer. If you have a doubt about a certain feature working on your project, check php.net to see which versions of PHP are supported. Also, verify your version of PHP on your localhost as well as your web host.

Drupalize.Me resources

Topic

PHP

Theming, Module Development, Drupal 9, Drupal 8, Drupal 7
More information

PHP: Hypertext Preprocessor (PHP) is a popular interpreted programming language that is especially suited for web development. Drupal core and all contributed modules are written in PHP.

Tutorial

Drupal Code Standards: Object-Oriented Programming

Free
Module Development, Drupal 8, Drupal 7, Drupal 9
More information

Drupal core uses object-oriented programming (OOP). This method of programming introduces new coding standards to the project. In this tutorial we'll cover the Drupal coding standards that relate to object-oriented PHP code.

By the end of this tutorial you should know how to implement the Drupal coding standards related to OOP, and where to find more information when you've got questions about the standards.

Goal

Write OOP code for Drupal that follows recommend coding standards guidelines.

CollectionHDCC

Introduction to Object-Oriented PHP

Backend and Infrastructure
11 tutorials
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CollectionHDCC

Object-Oriented PHP Part 2

Backend and Infrastructure
13 tutorials
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CollectionHDCC

Dependency Injection and the Art of Services and Containers

Backend and Infrastructure
5 tutorials
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CollectionHDCC

Object-Oriented PHP Part 3

Backend and Infrastructure
10 tutorials
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CollectionHDCC

Object-Oriented PHP Part 4

Backend and Infrastructure
15 tutorials
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Preparing for Drupal 8: PSR-4 Autoloading

August 12, 2014 - 9:00am
As a developer, one of the first new concepts you're going to need to understand for Drupal 8 is PSR-4. Or, the PHP Framework Interoperability Groups (php-fig), Proposal for Standard Request number 4 (PSR-4). A lot of fancy naming, abbreviations and numbers for a pretty simple idea. Allow your PHP classes to be automatically discovered and loaded by following a convention for class namespace and file/directory naming.
Topic

Services

Module Development, Drupal 9, Drupal 8
More information

Services are objects that encapsulate the code for performing specific tasks in a reusable and decoupled way.

Topic

Dependency Injection

Module Development, Drupal 9, Drupal 8
More information

Dependency injection is a design pattern commonly used in object-oriented software architectures in order to support Inversion of Control.

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