ExportController.php

<?php

namespace App\Http\Controllers;

use App\Services\Interfaces\ExportServiceInterface as ExportService;

class ExportController extends Controller
{
  protected $es;
  
  public function __construct(ExportService $es)
  {
    $this->es = $es;
  }
  
  public function exportRegistrations()
  {
    $data = $this->es->registrations();
    
    /* Do stuff with the data */
    
    return; // Return a response
  }
}

ExportRegistrationsCommand.php

<?php

namespace App\Console\Commands;

use Illuminate\Console\Command;
use App\Services\Interfaces\ExportServiceInterface as ExportService;

class ExportRegistrationsCommand extends Command
{
  protected $es;
  
  protected $signature = 'export:registrations';
  
  public function __construct(ExportService $es)
  {
    $this->es = $es;
  }
  
  public function handle()
  {
    $data = $this->es->registrations();
    
    /* Do stuff with the data */
  }
}

ExportService.php

<?php

namespace App\Services;

use App\Services\Interfaces\ExportServiceInterface;

class ExportService implements ExportServiceInterface
{
  public function registrations()
  {
    $data = [];
    
    /* Do the query stuff */
    
    return $data;
  }
}

ExportServiceInterface.php

<?php

namespace App\Services\Interfaces;

interface ExportServiceInterface
{
  public function registrations();
}

ServiceProvider.php

<?php

namespace App\Providers;

use App\Services\ExportService;
use Illuminate\Support\ServiceProvider;
use App\Services\Interfaces\ExportServiceInterface;

class ExportServiceProvider extends ServiceProvider
{
  public function register() 
  {
    $this->app->bind(ExportServiceInterface::class, ExportService::class);
  }
}