migration.php

    function migrateImages() {
        $ls = Storage::disk("s3")->allFiles("/prod");


        foreach ($ls as $l) {
            $newLoc = explode("/", $l);

            if (sizeof($newLoc) == 4) {

                Log::debug("=====>   ".$l);
                try {
                    Storage::disk("s3")->copy($l, "/" . $newLoc["0"] . "/" . $newLoc["1"] . "/" . $newLoc["2"] . "/big/" . $newLoc["4"]);
                } catch (\Exception $e) {
                    Log::debug($e->getMessage());
                }
                try {
                    Storage::disk("s3")->copy($l, "/" . $newLoc["0"] . "/" . $newLoc["1"] . "/" . $newLoc["2"] . "/mid/" . $newLoc["4"]);
                } catch (\Exception $e) {
                    Log::debug($e->getMessage());
                }
                try {
                    Storage::disk("s3")->copy($l, "/" . $newLoc["0"] . "/" . $newLoc["1"] . "/" . $newLoc["2"] . "/small/" . $newLoc["3"]);
                } catch (\Exception $e) {
                    Log::debug($e->getMessage());
                }
                try {
                    Storage::disk("s3")->delete($l);
                } catch (\Exception $e) {
                    Log::debug($e->getMessage());
                }
            }
        }
    }
}