Laravel backup command to amazon S3

BackupCRM.php

<?php

namespace App\Console\Commands;

use Aws\S3\MultipartUploader;
use Aws\Exception\MultipartUploadException;
use Illuminate\Console\Command;
use Storage;

class BackupCRM extends Command
{
    /**
     * The name and signature of the console command.
     *
     * @var string
     */
    protected $signature = 'db:backup {--only-db} {--only-uploads}';

    /**
     * The console command description.
     *
     * @var string
     */
    protected $description = 'Backups datatbase and uploads.';

    /**
     * Create a new command instance.
     *
     * @return void
     */
    public function __construct()
    {
        parent::__construct();
    }

    /**
     * Execute the console command.
     *
     * @return mixed
     */
    public function handle()
    {
        if ($this->option('only-db')) {
            return $this->backupDB(env('DB_USERNAME'), env('DB_PASSWORD'), env('DB_HOST'), env('DB_DATABASE'));
        } else if ($this->option('only-uploads')) {
            return $this->backupUploads(env('S3_BUCKET'));
        } else {
            $this->backupDB(env('DB_USERNAME'), env('DB_PASSWORD'), env('DB_HOST'), env('DB_DATABASE'));
            $this->backupUploads(env('S3_BUCKET'));
            return $this->info('Full backup completed!');
        }
    }

    protected function backupDB($user, $password, $host, $db)
    {
        $filePrefix = date('m-d-y-h:i:s');
        $fileSql    = $filePrefix.'file.sql';

        exec('mysqldump --result-file=storage/app/'.$fileSql.' --user='.$user.' --password='.$password.' --host='.$host.' '.$db); 
        exec('gzip storage/app/'.$fileSql);
        Storage::disk('s3')->put('database-backups/'. date("Y") . '/' . date("m") . '/'.$filePrefix.'file.sql.gz' , fopen('storage/app/'.$filePrefix.'file.sql.gz', 'r+'));
        Storage::delete($filePrefix.'file.sql.gz');
        return $this->info('Database backup completed!');
    }

    protected function backupUploads($bucket)
    {
        $uploads = date('m-d-y-h:i:s').'uploads.tar.gz';
        exec('tar -zcf storage/app/'.$uploads.' public/uploads/');

        $disk     = Storage::disk('s3');
        $fromPath = 'storage/app/'.$uploads;
        $toPath   = 'uploads-backups/'. date("Y") . '/' . date("m") . '/'.$uploads;
        $uploader = new MultipartUploader($disk->getDriver()->getAdapter()->getClient(), $fromPath, [
            'bucket' => $bucket,
            'key'    => $toPath,
        ]);

        try {
            $result = $uploader->upload();
            $this->info('Uploads backup completed!');
            Storage::delete($uploads);
        } catch (MultipartUploadException $e) {
            echo $e->getMessage();
        }
    }
}