# DesignPatternsPHP

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[Read the Docs of DesignPatternsPHP](http://designpatternsphp.readthedocs.org)
or [Download as PDF/Epub](https://readthedocs.org/projects/designpatternsphp/downloads/)

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.

## Installation
You should look at and run the tests to see what happens in the example.
To do this, you should install dependencies with `Composer` first:

```bash
$ composer install
```

Read more about how to install and use `Composer` on your local machine [here](https://getcomposer.org/doc/00-intro.md#installation-linux-unix-osx).

To run the tests use `phpunit`:

```bash
$ ./vendor/bin/phpunit
```

## using Docker (optional)

You can optionally run tests using [Docker for Mac](https://www.docker.com/docker-mac) or [Windows](https://www.docker.com/docker-windows) or native one for [Linux](https://www.docker.com/docker-debian).
Just run:

```bash
$ docker-compose up
```

To only install the dependencies, use `docker-compose` like this:

```bash
$ docker-compose run composer install
```

## Patterns

The patterns can be structured in roughly three different categories. Please click on the [:notebook:](http://en.wikipedia.org/wiki/Software_design_pattern) for a full explanation of the pattern on Wikipedia.

### [Creational](Creational)

* [AbstractFactory](Creational/AbstractFactory) [:notebook:](http://en.wikipedia.org/wiki/Abstract_factory_pattern)
* [Builder](Creational/Builder) [:notebook:](http://en.wikipedia.org/wiki/Builder_pattern)
* [FactoryMethod](Creational/FactoryMethod) [:notebook:](http://en.wikipedia.org/wiki/Factory_method_pattern)
* [Multiton](Creational/Multiton) (is considered an anti-pattern! :no_entry:)
* [Pool](Creational/Pool) [:notebook:](http://en.wikipedia.org/wiki/Object_pool_pattern)
* [Prototype](Creational/Prototype) [:notebook:](http://en.wikipedia.org/wiki/Prototype_pattern)
* [SimpleFactory](Creational/SimpleFactory)
* [Singleton](Creational/Singleton) [:notebook:](http://en.wikipedia.org/wiki/Singleton_pattern) (is considered an anti-pattern! :no_entry:)
* [StaticFactory](Creational/StaticFactory)

### [Structural](Structural)

* [Adapter](Structural/Adapter) [:notebook:](http://en.wikipedia.org/wiki/Adapter_pattern)
* [Bridge](Structural/Bridge) [:notebook:](http://en.wikipedia.org/wiki/Bridge_pattern)
* [Composite](Structural/Composite) [:notebook:](http://en.wikipedia.org/wiki/Composite_pattern)
* [DataMapper](Structural/DataMapper) [:notebook:](http://en.wikipedia.org/wiki/Data_mapper_pattern)
* [Decorator](Structural/Decorator) [:notebook:](http://en.wikipedia.org/wiki/Decorator_pattern)
* [DependencyInjection](Structural/DependencyInjection) [:notebook:](http://en.wikipedia.org/wiki/Dependency_injection)
* [Facade](Structural/Facade) [:notebook:](http://en.wikipedia.org/wiki/Facade_pattern)
* [FluentInterface](Structural/FluentInterface) [:notebook:](http://en.wikipedia.org/wiki/Fluent_interface)
* [Flyweight](Structural/Flyweight) [:notebook:](https://en.wikipedia.org/wiki/Flyweight_pattern)
* [Proxy](Structural/Proxy) [:notebook:](http://en.wikipedia.org/wiki/Proxy_pattern)
* [Registry](Structural/Registry) [:notebook:](http://en.wikipedia.org/wiki/Service_locator_pattern)

### [Behavioral](Behavioral)

* [ChainOfResponsibilities](Behavioral/ChainOfResponsibilities) [:notebook:](http://en.wikipedia.org/wiki/Chain_of_responsibility_pattern)
* [Command](Behavioral/Command) [:notebook:](http://en.wikipedia.org/wiki/Command_pattern)
* [Iterator](Behavioral/Iterator) [:notebook:](http://en.wikipedia.org/wiki/Iterator_pattern)
* [Mediator](Behavioral/Mediator) [:notebook:](http://en.wikipedia.org/wiki/Mediator_pattern)
* [Memento](Behavioral/Memento) [:notebook:](http://en.wikipedia.org/wiki/Memento_pattern)
* [NullObject](Behavioral/NullObject) [:notebook:](http://en.wikipedia.org/wiki/Null_Object_pattern)
* [Observer](Behavioral/Observer) [:notebook:](http://en.wikipedia.org/wiki/Observer_pattern)
* [Specification](Behavioral/Specification) [:notebook:](http://en.wikipedia.org/wiki/Specification_pattern)
* [State](Behavioral/State) [:notebook:](http://en.wikipedia.org/wiki/State_pattern)
* [Strategy](Behavioral/Strategy) [:notebook:](http://en.wikipedia.org/wiki/Strategy_pattern)
* [TemplateMethod](Behavioral/TemplateMethod) [:notebook:](http://en.wikipedia.org/wiki/Template_method_pattern)
* [Visitor](Behavioral/Visitor) [:notebook:](http://en.wikipedia.org/wiki/Visitor_pattern)

### [More](More)

* [ServiceLocator](More/ServiceLocator) [:notebook:](http://en.wikipedia.org/wiki/Service_locator_pattern) (is considered an anti-pattern! :no_entry:)
* [Repository](More/Repository)
* [EAV](More/EAV) [:notebook:](https://en.wikipedia.org/wiki/Entity%E2%80%93attribute%E2%80%93value_model)

## Contribute

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](https://github.com/squizlabs/PHP_CodeSniffer) against [PSR2 standard](https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-2-coding-style-guide.md) using `./vendor/bin/phpcs -p --standard=PSR2 --ignore=vendor .`.

