本文由laravel教學專欄跟大家介紹怎麼在程式碼中取得到容器實例，希望對需要的朋友有幫助！
laravel容器實例在整個請求生命週期中都是唯一的，並且管理所有的服務元件實例。那麼有哪些方式能夠拿到laravel容器的實例呢？常用的有以下幾種方式：
1） 透過app這個help函數：
$app = app();
app這個輔助函數定義在
<?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();
}
}
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