Sample code for several design patterns in PHP
This is a collection of known design patterns and some sample code how to implement them in PHP. Every pattern has a small list of examples (most of them from Zend Framework, Symfony2 or Doctrine2 as I'm most familiar with this software).
I think the problem with patterns is that often people do know them but don't know when to apply which.
You should look at and run the tests to see what happens in the example.
To do this, you should install dependencies with
$ composer install
Read more about how to install and use
Composer on your local machine here.
To run the tests use
You can optionally build and browse the documentation using Docker for Mac, Windows or Linux.
$ docker-compose up
Go to http://localhost:8080/README.html to read the generated documentation.
To only install the dependencies, use
docker-compose like this:
$ docker-compose run php php composer.phar install
The patterns can be structured in roughly three different categories. Please click on the 📓 for a full explanation of the pattern on Wikipedia.
- AbstractFactory 📓
- Builder 📓
- FactoryMethod 📓
- Multiton (is considered an anti-pattern! ⛔️)
- Pool 📓
- Prototype 📓
- Singleton 📓 (is considered an anti-pattern! ⛔️)
- Adapter 📓
- Bridge 📓
- Composite 📓
- DataMapper 📓
- Decorator 📓
- DependencyInjection 📓
- Facade 📓
- FluentInterface 📓
- Flyweight 📓
- Proxy 📓
- Registry 📓
- ChainOfResponsibilities 📓
- Command 📓
- Iterator 📓
- Mediator 📓
- Memento 📓
- NullObject 📓
- Observer 📓
- Specification 📓
- State 📓
- Strategy 📓
- TemplateMethod 📓
- Visitor 📓
If you encounter any bugs or missing translations, please feel free to fork and send a pull request with your changes.
To establish a consistent code quality, please check your code using PHP_CodeSniffer against PSR2 standard using
./vendor/bin/phpcs -p --standard=PSR2 --ignore=vendor ..