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alex-patterson-webdev/container
===============================

Simple implementation of the PSR-11 dependency injection container

0.1.0(3y ago)212[1 issues](https://github.com/alex-patterson-webdev/container/issues)[1 PRs](https://github.com/alex-patterson-webdev/container/pulls)PHPPHP >=7.4 || >=8.0CI failing

Since May 29Pushed 5mo ago2 watchersCompare

[ Source](https://github.com/alex-patterson-webdev/container)[ Packagist](https://packagist.org/packages/alex-patterson-webdev/container)[ RSS](/packages/alex-patterson-webdev-container/feed)WikiDiscussions master Synced 3w ago

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Arp\\Container
==============

[](#arpcontainer)

About
-----

[](#about)

A simple PSR-11 compatible Dependency Injection Container

Installation
------------

[](#installation)

Installation via [Composer](https://getcomposer.org).

```
require alex-patterson-webdev/container ^0.1

```

Usage
-----

[](#usage)

To begin using the container, we simply need to create an instance of it

```
use Arp\Container\Container;

$container = new Container();

```

The `Arp\Container\Container` implements the `Psr\ContainerInterface` and therefore can be used to check and fetch services by name.

```
if (true === $container->has('ServiceName')) {
    $service = $container->get('ServiceName');
}

```

Registering services with the container
---------------------------------------

[](#registering-services-with-the-container)

There are a number of different ways we can register a 'service' with the container, the method you choose will depend on how you wish the service to be created.

### Objects and Values

[](#objects-and-values)

The simplest use case is when you need to `set()` an object or value on the container. These values do not require instantiation, the container will simply store and return this value unmodified when requested via `get()`.

```
$container = new Container();
$container->set('TodaysDate', new \DateTime('today'));
$todaysDate = $container->get('TodaysDate');

```

### Factories

[](#factories)

Factories provide us with a location to construct and resolve dependencies using the container. The factory can be any php `callable`and can be set by calling `$container->setFactory()`.

```
$container = new Container();
$container->setFactory('TodaysDate', static function() {
    return new \DateTime('today');
});

```

When invoked the factory class will also have the container injected into it as the first argument. We can use the container to resolve other dependencies.

```
$container->setFactory('TodaysDateService', static function(ContainerInterface $container) {
    return new TodayDateService($container->get('TodaysDate');
});

```

We also have access to the requested service name as the second argument, `$name`. By being aware of the name of the service which is being created it allows the creation of reusable factories.

```
$factory = static function(ContainerInterface $container, string $name) {
   $todaysDate = $container->get('TodaysDate');
   if ('EnglishDateService' === $name) {
        return new EnglishDateService($todaysDate);
   }
   return new FrenchDateService($todaysDate);
};

```

We can then assign the same factory with different service names.

```
$container->setFactory('EnglishDateService', $factory);
$container->setFactory('FrenchDateService', $factory);

```

### Object Factory

[](#object-factory)

In cases where you need have a service without dependencies we can use the `Arp\Container\Factory\ObjectFactory` and the container will create the class for us based on the service `$name`. If the service `$name` is not a valid class name an exception is thrown.

```
use Arp\Container\Factory\ObjectFactory;
$container = new Container();
$container->setFactory(\stdClass(), ObjectFactory::class);

// @var \stdClass $object
$object = $container->get(\stcClass());

```

*The above configuration isn't explicitly required as any service `$name` using a FQCN not registered with the container with be automatically registered to use `ObjectFactory`. We recommended that you explicitly define the service for clarity*.

Unit Tests
----------

[](#unit-tests)

The project unit tests can be executed using PHPUnit

```
php vendor/bin/phpunit

```

###  Health Score

26

—

LowBetter than 41% of packages

Maintenance39

Infrequent updates — may be unmaintained

Popularity8

Limited adoption so far

Community8

Small or concentrated contributor base

Maturity41

Maturing project, gaining track record

 Bus Factor1

Top contributor holds 100% of commits — single point of failure

How is this calculated?**Maintenance (25%)** — Last commit recency, latest release date, and issue-to-star ratio. Uses a 2-year decay window.

**Popularity (30%)** — Total and monthly downloads, GitHub stars, and forks. Logarithmic scaling prevents top-heavy scores.

**Community (15%)** — Contributors, dependents, forks, watchers, and maintainers. Measures real ecosystem engagement.

**Maturity (30%)** — Project age, version count, PHP version support, and release stability.

###  Release Activity

Cadence

Unknown

Total

1

Last Release

1131d ago

### Community

Maintainers

![](https://avatars.githubusercontent.com/u/1563851?v=4)[Alex Patterson](/maintainers/alex-patterson-webdev)[@alex-patterson-webdev](https://github.com/alex-patterson-webdev)

---

Top Contributors

[![alex-patterson-webdev](https://avatars.githubusercontent.com/u/1563851?v=4)](https://github.com/alex-patterson-webdev "alex-patterson-webdev (39 commits)")

###  Code Quality

TestsPHPUnit

### Embed Badge

![Health badge](/badges/alex-patterson-webdev-container/health.svg)

```
[![Health](https://phpackages.com/badges/alex-patterson-webdev-container/health.svg)](https://phpackages.com/packages/alex-patterson-webdev-container)
```

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