protected function registerSessionManager()
{
    $this->app->singleton('session', function ($app) {
        return new SessionManager($app);
    });
}

protected function callCustomCreator($driver) //たぶん独自にDriverを登録できるやつ
{
    return $this->buildSession(parent::callCustomCreator($driver));
}

// 既存のDriverメソッドの抜粋
protected function createFileDriver()
{
    return $this->createNativeDriver();
}

protected function createMemcachedDriver()
{
    return $this->createCacheBased('memcached');
}

protected function createDynamodbDriver()
{
    return $this->createCacheBased('dynamodb');
}

// ここで/config/session.phpのdriverをDriverとしてセットしている。
public function getDefaultDriver()
{
    return $this->app['config']['session.driver'];
}

protected function createDriver($driver)
{
    if (isset($this->customCreators[$driver])) {
        return $this->callCustomCreator($driver);
    } else {
        $method = 'create'.Str::studly($driver).'Driver';
        if (method_exists($this, $method)) {
            return $this->$method();
        }
    }
    throw new InvalidArgumentException("Driver [$driver] not supported.");
}

// これでdriverメソッドで生成したStoreのメソッドをSessionManagerから直接使用できる
// Session::get('hoge')て感じで(SessionはSessionManagerのファサード)
public function __call($method, $parameters)
{
    return $this->driver()->$method(...$parameters);
}

SESSION_DRIVER=database

php artisan session:table

php artisan migrate

Session::all();

Session::get('hoge');

<?php

namespace App\Components\Sms;

use Illuminate\Support\Manager;
use Nexmo\Client as NexmoClient; // NexmoのPHPクライアント
use Twilio\Rest\Client as TwilioClient; // TwilioののPHPクライアント
use App\Components\Sms\Drivers\NullDriver; // configに設定がない時用のDriver
use App\Components\Sms\Drivers\NexmoDriver;
use App\Components\Sms\Drivers\TwilioDriver;
use Nexmo\Client\Credentials\Basic as NexmoBasicCredentials; // Nexmoの認証に使うやつ

class SmsManager extends Manager
{
    public function channel($name = null)
    {
        return $this->driver($name);
    }

    public function createNexmoDriver()
    {
        return new NexmoDriver(
            $this->createNexmoClient(),
            $this->app['config']['sms.nexmo.from']
        );
    }

    public function createTwilioDriver()
    {
        return new TwilioDriver(
            $this->createTwilioClient(),
            $this->app['config']['sms.twilio.from']
        );
    }

    protected function createNexmoClient()
    {
        return new NexmoClient(
            new NexmoBasicCredentials(
                $this->app['config']['sms.nexmo.key'],
                $this->app['config']['sms.nexmo.secret']
            )
        );
    }

    protected function createTwilioClient()
    {
        return new TwilioClient(
            $this->app['config']['sms.twilio.key'],
            $this->app['config']['sms.twilio.secret']
        );
    }

    public function createNullDriver()
    {
        return new NullDriver;
    }

    public function getDefaultDriver()
    {
        return $this->app['config']['sms.default'] ?? 'null';
    }
}

<?php

namespace App\Components\Sms\Drivers;

use Illuminate\Support\Arr;
use App\Components\Sms\Exceptions\SmsException;

abstract class Driver implements
{
    protected $recipient;

    protected $message;

    abstract public function send();

    public function to(string $recipient) // 宛先の設定
    {
        $this->recipient = $recipient;

        return $this; // メソッドチェーンしたいので$thisを返しておく。
    }

    public function content(string $message) // メッセージの設定
    {
        $this->message = $message;

        return $this;
    }
}

<?php

namespace App\Components\Sms\Drivers;

use Twilio\Rest\Client as TwilioClient;

class TwilioDriver extends Driver
{
    /**
     * The Twilio client.
     * 
     * @var \Twilio\Rest\Client
    */
    protected $client;

    /**
     * The phone number this sms should be sent from.
     *
     * @var string
     */
    protected $from;

    /**
     * Create a new Twilio driver instance.
     *
     * @param  \Twilio\Rest\Client  $twilio
     * @param  string  $from
     * @return void
    */
    public function __construct(TwilioClient $twilio, $from)
    {
        $this->client = $twilio;
        $this->from = $from;
    }

    public function send() // 送信処理
    {
        return $this->client->messages->create(
            $this->recipient, [
                'from' => $this->from,
                'body' => trim($this->message)
            ]
        );
    }
}

SMS::channel('twilio')
    ->to($phoneNumber)
    ->content('Using twilio driver to send SMS')
    ->send();