[php]laravel框架容器管理的一些要点

$app = app();

<?php

Route::get('/', function () {
    dd(App::basePath());
    return '';
});

<?php

namespace ThirdProviders\CasServer\Facades;

use Illuminate\Support\Facades\Facade;
use ThirdProviders\CasServer\CasServerManager;

class CasServer extends Facade
{
    protected static function getFacadeAccessor()
    {
        return CasServerManager::class;
    }
}

<?php

namespace Illuminate\Support\Facades;

/**
 * @see \Illuminate\Foundation\Application
 */
class App extends Facade
{
    /**
     * Get the registered name of the component.
     *
     * @return string
     */
    protected static function getFacadeAccessor()
    {
        return 'app';
    }
}

<?php

Route::get('/', function () {
    dd(App::basePath());
    return '';
});

'aliases' => [

    'App' => Illuminate\Support\Facades\App::class,
    'Artisan' => Illuminate\Support\Facades\Artisan::class,
    'Auth' => Illuminate\Support\Facades\Auth::class,
    'Blade' => Illuminate\Support\Facades\Blade::class,
    'Bus' => Illuminate\Support\Facades\Bus::class,
    'Cache' => Illuminate\Support\Facades\Cache::class,
    'Config' => Illuminate\Support\Facades\Config::class,
    'Cookie' => Illuminate\Support\Facades\Cookie::class,
    'Crypt' => Illuminate\Support\Facades\Crypt::class,
    'DB' => Illuminate\Support\Facades\DB::class,
    'Eloquent' => Illuminate\Database\Eloquent\Model::class,
    'Event' => Illuminate\Support\Facades\Event::class,
    'File' => Illuminate\Support\Facades\File::class,
    'Gate' => Illuminate\Support\Facades\Gate::class,
    'Hash' => Illuminate\Support\Facades\Hash::class,
    'Lang' => Illuminate\Support\Facades\Lang::class,
    'Log' => Illuminate\Support\Facades\Log::class,
    'Mail' => Illuminate\Support\Facades\Mail::class,
    'Notification' => Illuminate\Support\Facades\Notification::class,
    'Password' => Illuminate\Support\Facades\Password::class,
    'Queue' => Illuminate\Support\Facades\Queue::class,
    'Redirect' => Illuminate\Support\Facades\Redirect::class,
    'Redis' => Illuminate\Support\Facades\Redis::class,
    'Request' => Illuminate\Support\Facades\Request::class,
    'Response' => Illuminate\Support\Facades\Response::class,
    'Route' => Illuminate\Support\Facades\Route::class,
    'Schema' => Illuminate\Support\Facades\Schema::class,
    'Session' => Illuminate\Support\Facades\Session::class,
    'Storage' => Illuminate\Support\Facades\Storage::class,
    'URL' => Illuminate\Support\Facades\URL::class,
    'Validator' => Illuminate\Support\Facades\Validator::class,
    'View' => Illuminate\Support\Facades\View::class
],

<?php

namespace Illuminate\Foundation\Bootstrap;

use Illuminate\Support\Facades\Facade;
use Illuminate\Foundation\AliasLoader;
use Illuminate\Contracts\Foundation\Application;

class RegisterFacades
{
    /**
     * Bootstrap the given application.
     *
     * @param  \Illuminate\Contracts\Foundation\Application  $app
     * @return void
     */
    public function bootstrap(Application $app)
    {
        Facade::clearResolvedInstances();

        Facade::setFacadeApplication($app);

        AliasLoader::getInstance($app->make('config')->get('app.aliases', []))->register();
    }
}

<?php

Route::get('/', function () {
    dd(app());
    return '';
});

app()->singleton('service', 'this is service1');

app()->singleton('service2', [
    'hi' => function(){
        //say hi
    }
]);

class Service {

}

app()->singleton('service3', function(){
    return new Service();
});

app()->bind('service', function(){
    return new Service();
},true);

app()['service'] = function(){
    return new Service();
};

/**
 * Set the value at a given offset.
 *
 * @param  string  $key
 * @param  mixed   $value
 * @return void
 */
public function offsetSet($key, $value)
{
    // If the value is not a Closure, we will make it one. This simply gives
    // more "drop-in" replacement functionality for the Pimple which this
    // container's simplest functions are base modeled and built after.
    if (! $value instanceof Closure) {
        $value = function () use ($value) {
            return $value;
        };
    }

    $this->bind($key, $value);
}

$service= app()->make('service');

public function make($abstract, array $parameters = [])
{
    $abstract = $this->getAlias($this->normalize($abstract));

    // If an instance of the type is currently being managed as a singleton we'll
    // just return an existing instance instead of instantiating new instances
    // so the developer can keep using the same objects instance every time.
    if (isset($this->instances[$abstract])) {
        return $this->instances[$abstract];
    }

    $concrete = $this->getConcrete($abstract);

    // We're ready to instantiate an instance of the concrete type registered for
    // the binding. This will instantiate the types, as well as resolve any of
    // its "nested" dependencies recursively until all have gotten resolved.
    if ($this->isBuildable($concrete, $abstract)) {
        $object = $this->build($concrete, $parameters);
    } else {
        $object = $this->make($concrete, $parameters);
    }

    // If we defined any extenders for this type, we'll need to spin through them
    // and apply them to the object being built. This allows for the extension
    // of services, such as changing configuration or decorating the object.
    foreach ($this->getExtenders($abstract) as $extender) {
        $object = $extender($object, $this);
    }

    // If the requested type is registered as a singleton we'll want to cache off
    // the instances in "memory" so we can return it later without creating an
    // entirely new instance of an object on each subsequent request for it.
    if ($this->isShared($abstract)) {
        $this->instances[$abstract] = $object;
    }

    $this->fireResolvingCallbacks($abstract, $object);

    $this->resolved[$abstract] = true;

    return $object;
}

app()['service'];

public function offsetGet($key)
{
    return $this->make($key);
}

app('service');

function app($make = null, $parameters = [])
{
    if (is_null($make)) {
        return Container::getInstance();
    }

    return Container::getInstance()->make($make, $parameters);
}

<?php

namespace App\Providers;

use Illuminate\Support\ServiceProvider;

class AppServiceProvider extends ServiceProvider
{
    protected $defer = true;

    public function boot()
    {
        //
    }

    public function register()
    {
        $this->app->singleton('service1', function(){
            return 'service1';
        });
        $this->app->singleton('service2', function(){
            return 'service2';
        });
        $this->app->singleton('service3', function(){
            return 'service3';
        });
    }

    public  function provides()
    {
        return ['service1','service2','service3'];
    }
}

public function registerConfiguredProviders()
    {
        $manifestPath = $this->getCachedServicesPath();

        (new ProviderRepository($this, new Filesystem, $manifestPath))
                    ->load($this->config['app.providers']);
    }

'providers' => [

    /*
     * Laravel Framework Service Providers...
     */
    Illuminate\Auth\AuthServiceProvider::class,
    Illuminate\Broadcasting\BroadcastServiceProvider::class,
    Illuminate\Bus\BusServiceProvider::class,
    Illuminate\Cache\CacheServiceProvider::class,
    Illuminate\Foundation\Providers\ConsoleSupportServiceProvider::class,
    Illuminate\Cookie\CookieServiceProvider::class,
    Illuminate\Database\DatabaseServiceProvider::class,
    Illuminate\Encryption\EncryptionServiceProvider::class,
    Illuminate\Filesystem\FilesystemServiceProvider::class,
    Illuminate\Foundation\Providers\FoundationServiceProvider::class,
    Illuminate\Hashing\HashServiceProvider::class,
    Illuminate\Mail\MailServiceProvider::class,
    Illuminate\Notifications\NotificationServiceProvider::class,
    Illuminate\Pagination\PaginationServiceProvider::class,
    Illuminate\Pipeline\PipelineServiceProvider::class,
    Illuminate\Queue\QueueServiceProvider::class,
    Illuminate\Redis\RedisServiceProvider::class,
    Illuminate\Auth\Passwords\PasswordResetServiceProvider::class,
    Illuminate\Session\SessionServiceProvider::class,
    Illuminate\Translation\TranslationServiceProvider::class,
    Illuminate\Validation\ValidationServiceProvider::class,
    Illuminate\View\ViewServiceProvider::class,

    /*
     * Package Service Providers...
     */

    //

    /*
     * Application Service Providers...
     */
    App\Providers\AppServiceProvider::class,
    App\Providers\AuthServiceProvider::class,
    // App\Providers\BroadcastServiceProvider::class,
    App\Providers\EventServiceProvider::class,
    App\Providers\RouteServiceProvider::class,
    Xavrsl\Cas\CasServiceProvider::class,
    ThirdProviders\CasServer\CasServerProvider::class
],

app()->singleton('service1', function(){
    new CasServerManager();
});

app()->alias('service1', 'alias_a');

app()->alias('alias_a', 'alias_b');
app()->alias('alias_b', 'alias_c');

app('alias_c');
app('alias_b');
app('alias_a');
app('service1');

app()->singleton(['service1' => 'alias'], function(){
    new CasServerManager();
});

<?php

class Service{
    protected $app;

    public function __construct(\Illuminate\Contracts\Foundation\Application $app)
    {
        $this->app = $app;
    }
}

app()->singleton(Service::class);

Route::get('/', function () {
    dd(app(Service::class));
    return '';
});

public function registerCoreContainerAliases()
{
    $aliases = [
        'app'                  => ['Illuminate\Foundation\Application', 'Illuminate\Contracts\Container\Container', 'Illuminate\Contracts\Foundation\Application'],
        'auth'                 => ['Illuminate\Auth\AuthManager', 'Illuminate\Contracts\Auth\Factory'],
        'auth.driver'          => ['Illuminate\Contracts\Auth\Guard'],
        'blade.compiler'       => ['Illuminate\View\Compilers\BladeCompiler'],
        'cache'                => ['Illuminate\Cache\CacheManager', 'Illuminate\Contracts\Cache\Factory'],
        'cache.store'          => ['Illuminate\Cache\Repository', 'Illuminate\Contracts\Cache\Repository'],
        'config'               => ['Illuminate\Config\Repository', 'Illuminate\Contracts\Config\Repository'],
        'cookie'               => ['Illuminate\Cookie\CookieJar', 'Illuminate\Contracts\Cookie\Factory', 'Illuminate\Contracts\Cookie\QueueingFactory'],
        'encrypter'            => ['Illuminate\Encryption\Encrypter', 'Illuminate\Contracts\Encryption\Encrypter'],
        'db'                   => ['Illuminate\Database\DatabaseManager'],
        'db.connection'        => ['Illuminate\Database\Connection', 'Illuminate\Database\ConnectionInterface'],
        'events'               => ['Illuminate\Events\Dispatcher', 'Illuminate\Contracts\Events\Dispatcher'],
        'files'                => ['Illuminate\Filesystem\Filesystem'],
        'filesystem'           => ['Illuminate\Filesystem\FilesystemManager', 'Illuminate\Contracts\Filesystem\Factory'],
        'filesystem.disk'      => ['Illuminate\Contracts\Filesystem\Filesystem'],
        'filesystem.cloud'     => ['Illuminate\Contracts\Filesystem\Cloud'],
        'hash'                 => ['Illuminate\Contracts\Hashing\Hasher'],
        'translator'           => ['Illuminate\Translation\Translator', 'Symfony\Component\Translation\TranslatorInterface'],
        'log'                  => ['Illuminate\Log\Writer', 'Illuminate\Contracts\Logging\Log', 'Psr\Log\LoggerInterface'],
        'mailer'               => ['Illuminate\Mail\Mailer', 'Illuminate\Contracts\Mail\Mailer', 'Illuminate\Contracts\Mail\MailQueue'],
        'auth.password'        => ['Illuminate\Auth\Passwords\PasswordBrokerManager', 'Illuminate\Contracts\Auth\PasswordBrokerFactory'],
        'auth.password.broker' => ['Illuminate\Auth\Passwords\PasswordBroker', 'Illuminate\Contracts\Auth\PasswordBroker'],
        'queue'                => ['Illuminate\Queue\QueueManager', 'Illuminate\Contracts\Queue\Factory', 'Illuminate\Contracts\Queue\Monitor'],
        'queue.connection'     => ['Illuminate\Contracts\Queue\Queue'],
        'queue.failer'         => ['Illuminate\Queue\Failed\FailedJobProviderInterface'],
        'redirect'             => ['Illuminate\Routing\Redirector'],
        'redis'                => ['Illuminate\Redis\Database', 'Illuminate\Contracts\Redis\Database'],
        'request'              => ['Illuminate\Http\Request', 'Symfony\Component\HttpFoundation\Request'],
        'router'               => ['Illuminate\Routing\Router', 'Illuminate\Contracts\Routing\Registrar'],
        'session'              => ['Illuminate\Session\SessionManager'],
        'session.store'        => ['Illuminate\Session\Store', 'Symfony\Component\HttpFoundation\Session\SessionInterface'],
        'url'                  => ['Illuminate\Routing\UrlGenerator', 'Illuminate\Contracts\Routing\UrlGenerator'],
        'validator'            => ['Illuminate\Validation\Factory', 'Illuminate\Contracts\Validation\Factory'],
        'view'                 => ['Illuminate\View\Factory', 'Illuminate\Contracts\View\Factory'],
    ];

    foreach ($aliases as $key => $aliases) {
        foreach ($aliases as $alias) {
            $this->alias($key, $alias);
        }
    }
}

<?php

interface Inter{
    public function method();
}

class InterImpl implements Inter{
    public function method(){
        //
    }
}

class Service{
    protected $inter;

    public function __construct(Inter $inter)
    {
        $this->inter = $inter;
    }
}

app()->singleton(Inter::class,InterImpl::class);
app()->singleton(Service::class);

Route::get('/', function () {
    dd(app(Service::class));
    return '';
});

app()->singleton(Inter::class,InterImpl2::class);

$service = new Service();
app()->instance('service',$service);

public function instance($abstract, $instance)
    {
        $abstract = $this->normalize($abstract);

        // First, we will extract the alias from the abstract if it is an array so we
        // are using the correct name when binding the type. If we get an alias it
        // will be registered with the container so we can resolve it out later.
        if (is_array($abstract)) {
            list($abstract, $alias) = $this->extractAlias($abstract);

            $this->alias($abstract, $alias);
        }

        unset($this->aliases[$abstract]);

        // We'll check to determine if this type has been bound before, and if it has
        // we will fire the rebound callbacks registered with the container and it
        // can be updated with consuming classes that have gotten resolved here.
        $bound = $this->bound($abstract);

        $this->instances[$abstract] = $instance;

        if ($bound) {
            $this->rebound($abstract);
        }
    }

$this->app['cas'] = $this->app->share(function()
{
    $config = $this->app['config']->get('cas');
    return new CasManager($config);
});