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webfiori/container
==================

A lightweight dependency injection container with auto-resolution.

v1.0.1(1mo ago)0638↓78.9%[1 issues](https://github.com/WebFiori/container/issues)1MITPHPPHP >=8.1CI passing

Since May 29Pushed 1mo agoCompare

[ Source](https://github.com/WebFiori/container)[ Packagist](https://packagist.org/packages/webfiori/container)[ RSS](/packages/webfiori-container/feed)WikiDiscussions main Synced 1w ago

READMEChangelog (2)Dependencies (2)Versions (5)Used By (1)

WebFiori Container
==================

[](#webfiori-container)

A lightweight dependency injection container for PHP with automatic constructor resolution.

 [![](https://github.com/WebFiori/container/actions/workflows/php84.yaml/badge.svg?branch=main)](https://github.com/WebFiori/container/actions) [ ![](https://camo.githubusercontent.com/0d8cbca9649e63248e902cd722e8fbf6163260335a28859fc98fb855234456d3/68747470733a2f2f636f6465636f762e696f2f67682f57656246696f72692f636f6e7461696e65722f6272616e63682f6d61696e2f67726170682f62616467652e737667) ](https://codecov.io/gh/WebFiori/container) [ ![](https://camo.githubusercontent.com/0f36d8f337b2ea3429fb9b8773e5fce888c2ef3c0cc8964f1814a1094837e1b4/68747470733a2f2f736f6e6172636c6f75642e696f2f6170692f70726f6a6563745f6261646765732f6d6561737572653f70726f6a6563743d57656246696f72695f636f6e7461696e6572266d65747269633d616c6572745f737461747573) ](https://sonarcloud.io/dashboard?id=WebFiori_container) [ ![](https://camo.githubusercontent.com/232626e5633fe5464049d9b5803207eefd54c147bf1ef967bc39591cad34140f/68747470733a2f2f696d672e736869656c64732e696f2f6769746875622f72656c656173652f57656246696f72692f636f6e7461696e65722e7376673f6c6162656c3d6c6174657374) ](https://github.com/WebFiori/container/releases) [ ![](https://camo.githubusercontent.com/e3346f6affaf812153ec044f49468aa9be9cc9c1724a11b7611dbd74810b73f3/68747470733a2f2f696d672e736869656c64732e696f2f7061636b61676973742f64742f77656266696f72692f636f6e7461696e65723f636f6c6f723d6c696768742d677265656e) ](https://packagist.org/packages/webfiori/container)

Supported PHP Versions
----------------------

[](#supported-php-versions)

This library requires **PHP 8.1 or higher**.

Build Status[![](https://github.com/WebFiori/container/actions/workflows/php81.yaml/badge.svg?branch=main)](https://github.com/WebFiori/container/actions/workflows/php81.yaml)[![](https://github.com/WebFiori/container/actions/workflows/php82.yaml/badge.svg?branch=main)](https://github.com/WebFiori/container/actions/workflows/php82.yaml)[![](https://github.com/WebFiori/container/actions/workflows/php83.yaml/badge.svg?branch=main)](https://github.com/WebFiori/container/actions/workflows/php83.yaml)[![](https://github.com/WebFiori/container/actions/workflows/php84.yaml/badge.svg?branch=main)](https://github.com/WebFiori/container/actions/workflows/php84.yaml)[![](https://github.com/WebFiori/container/actions/workflows/php85.yaml/badge.svg?branch=main)](https://github.com/WebFiori/container/actions/workflows/php85.yaml)Features
--------

[](#features)

- **Instance-based API** — fully testable, multiple containers can coexist
- **Static facade** (`ContainerFacade`) for quick usage without DI
- **Auto-resolution** of constructor dependencies via reflection
- **Singleton support** — resolve once, return same instance on subsequent calls
- **Callable factories** for complex construction logic
- **Nullable parameter handling** — resolves to null if dependency is unbound
- **Default value support** — uses parameter defaults for unresolvable scalar types
- **Zero dependencies** — requires only PHP 8.1+

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

[](#installation)

```
composer require webfiori/container
```

Usage
-----

[](#usage)

### Basic Binding

[](#basic-binding)

```
use WebFiori\Container\Container;

$container = new Container();

// Bind interface to implementation
$container->bind(LoggerInterface::class, FileLogger::class);

$logger = $container->make(LoggerInterface::class);
// Returns a new FileLogger instance
```

### Singletons

[](#singletons)

```
$container->singleton(DatabaseConnection::class, MySQLConnection::class);

$a = $container->make(DatabaseConnection::class);
$b = $container->make(DatabaseConnection::class);
// $a === $b (same instance)
```

### Auto-Resolution

[](#auto-resolution)

The container automatically resolves constructor dependencies:

```
class UserRepository {
    public function __construct(DatabaseConnection $db) {
        // ...
    }
}

class UserService {
    public function __construct(UserRepository $repo, LoggerInterface $logger) {
        // ...
    }
}

$container->singleton(DatabaseConnection::class, MySQLConnection::class);
$container->bind(LoggerInterface::class, FileLogger::class);

// Automatically resolves UserRepository and LoggerInterface
$service = $container->make(UserService::class);
```

### Callable Factories

[](#callable-factories)

```
$container->bind(CacheInterface::class, function (Container $c) {
    $config = $c->make(Config::class);
    return new RedisCache($config->get('redis.host'), $config->get('redis.port'));
});
```

### Registering Existing Instances

[](#registering-existing-instances)

```
$config = new Config('/path/to/config.json');
$container->instance(Config::class, $config);
```

### Static Facade

[](#static-facade)

```
use WebFiori\Container\ContainerFacade;

ContainerFacade::singleton(LoggerInterface::class, FileLogger::class);
$logger = ContainerFacade::make(LoggerInterface::class);
```

API
---

[](#api)

### `Container`

[](#container)

MethodDescription`bind(string $abstract, string|callable $concrete)`Register a binding (new instance each time)`singleton(string $abstract, string|callable $concrete)`Register a singleton (same instance each time)`instance(string $abstract, object $instance)`Register an existing instance`make(string $abstract): object`Resolve an instance`has(string $abstract): bool`Check if a binding exists`remove(string $abstract): void`Remove a binding`reset(): void`Remove all bindings and instances### `ContainerFacade`

[](#containerfacade)

Static wrapper around a default `Container` instance. Same methods as `Container` plus:

MethodDescription`getInstance(): Container`Get the default container`setInstance(Container $container): void`Replace the default container`reset(): void`Destroy the default instanceBehavior
--------

[](#behavior)

- **Auto-resolution:** If a class is not explicitly bound, the container attempts to instantiate it by resolving its constructor dependencies recursively.
- **Nullable parameters:** If a dependency cannot be resolved and the parameter is nullable, `null` is used.
- **Default values:** Scalar parameters with default values use those defaults when not resolvable.
- **Exceptions:** `ContainerException` is thrown when a dependency cannot be resolved (non-existent class, abstract class, unresolvable parameter).

License
-------

[](#license)

MIT

###  Health Score

43

—

FairBetter than 89% of packages

Maintenance90

Actively maintained with recent releases

Popularity18

Limited adoption so far

Community10

Small or concentrated contributor base

Maturity45

Maturing project, gaining track record

 Bus Factor1

Top contributor holds 71.4% 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

Every ~4 days

Total

2

Last Release

52d ago

### Community

Maintainers

![](https://www.gravatar.com/avatar/4c25e43acaa22b4fb758a710b69c2ab75947a6642925e3bec9c98196b1f2a433?d=identicon)[usernane](/maintainers/usernane)

---

Top Contributors

[![usernane](https://avatars.githubusercontent.com/u/12120015?v=4)](https://github.com/usernane "usernane (5 commits)")[![github-actions[bot]](https://avatars.githubusercontent.com/in/15368?v=4)](https://github.com/github-actions[bot] "github-actions[bot] (2 commits)")

###  Code Quality

TestsPHPUnit

Code StylePHP CS Fixer

### Embed Badge

![Health badge](/badges/webfiori-container/health.svg)

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

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