Upload files from public (or any) disk to AWS S3 in Laravel without using any external tools.

pu2s3.php

<?php

use Illuminate\Support\Facades\Storage;

$public = Storage::disk('public');
$s3 = Storage::disk('s3');

$files = $public->files(null, true);

foreach ($files as $file) {
    echo 'Uploading ', $file, '...', PHP_EOL;
    $s3->put($file, $public->readStream($file), ['visibility' => 'public']);
}

usage.md

To use it, first set the below variables in your .env and run php artisan config:cache.

AWS_BUCKET=???
AWS_ACCESS_KEY_ID=???
AWS_SECRET_ACCESS_KEY=???
AWS_DEFAULT_REGION=???
AWS_ENDPOINT=???

In project folder, create a file named e.g., pu2s3.php and paste the Gist's content in it. Thenafter, run below command:

php artisan tinker

>>> require 'pu2s3.php';

Then just wait for it to finish.