A simple dependency injecting container from laravel.

Why

中文文档

Currently more popular php container:

• Pimple
• Laravel Container
• Other Dependency-injection Container

Pimple is a simple and excellent php 5.3 container, which is also the most used service container, and the installed capacity of packagist is also up to 1000W+ .But Pimple just a simple service container that does not support many features such as:

class Cache
{
    public function __construct(Config $config){}
}

class Config
{
}

// not support
$cache = $container->make('Cache');

Pimple Does not support the automatic injection of dependency parameters, when you need to rely on other objects object, you can only instantiate the required parameters.

Laravel Container is the most full-featured service container, including auto-injection, load-loading, alias, TAG, and so so. But the official does not recommend using the component in non-laravel project.

If you have noticed the composer.json file under that component，You will find that he depends on the illuminate/contracts component.(see also)

Based on this, easy-container was born, and the project code relied heavily on Laravel Container 😄 😄 . You can use it like a Laravel Container container.

Install

🐝 Now, we support most PHP versions, which you can view here.

composer require godruoyi/easy-container

Use

You can get more help with container usage at laravel.com.

Initialize the container.

$app = new Godruoyi\Container\Container;

The following documents support from laravel.com, reproduced please indicate the source.

Simple Bindings

We can register a binding using the bind method, passing the class or interface name that we wish to register along with a Closure that returns an instance of the class:

$app->bind('HelpSpot\API', function ($app) {
    return new HelpSpot\API($app->make('HttpClient'));
});

Note,All anonymous functions accept the service container instance as a parameter.

Binding A Singleton

The singleton method binds a class or interface into the container that should only be resolved one time. Once a singleton binding is resolved, the same object instance will be returned on subsequent calls into the container:

$app->singleton('HelpSpot\API', function ($app) {
    return new HelpSpot\API($app->make('HttpClient'));
});

Each time you call $app['HelpSpot\API'] will return the same object.

Binding A Singleton

The singleton method binds a class or interface into the container that should only be resolved one time. Once a singleton binding is resolved, the same object instance will be returned on subsequent calls into the container:

$api = new HelpSpot\API(new HttpClient);

$app->instance('HelpSpot\API', $api);

Binding Interfaces To Implementations

A very powerful feature of the service container is its ability to bind an interface to a given implementation. For example, let's assume we have an EventPusher interface and a RedisEventPusher implementation. Once we have coded our RedisEventPusher implementation of this interface, we can register it with the service container like so:

$app->bind(
    'App\Contracts\EventPusher',
    'App\Services\RedisEventPusher'
);

This statement tells the container that it should inject the RedisEventPusher when a class needs an implementation of EventPusher. Now we can type-hint the EventPusher interface in a constructor, or any other location where dependencies are injected by the service container:

use App\Contracts\EventPusher;

/**
 * Create a new instance of the class, which will be injected into the App\Services\RedisEventPusher instance.
 *
 * @param  EventPusher  $pusher
 * @return void
 */
public function __construct(EventPusher $pusher)
{
    $this->pusher = $pusher;
}

Resolving

The make Method

You may use the make method to resolve a class instance out of the container(regardless of what type of parameter the object needs). The make method accepts the name of the class or interface you wish to resolve:

$api = $app->make('HelpSpot\API');

The mark method is the most important method I think of,You can simply use the "type prompt" way to add dependencies,the container will automatically parse all the parameters you need.

// Automatically parses the dependencies required by the UserController constructor
$userController = $app->make(UserController::class);

class UserController
{
    public function __construct(UserRepository $users, HttpClient $client, $other = 'default')
    {
    }
}

PSR-11

Laravel's service container implements the PSR-11 interface. Therefore, you may type-hint the PSR-11 container interface to obtain an instance of the Laravel container:

use Psr\Container\ContainerInterface;

$service = $app->get('Service');

LISTEN

MIT

Thanks

laravel-china