ap2i/src/Service/Utils/Uuid.php

<?php

namespace App\Service\Utils;

class Uuid
{
    /**
     * Generates an UUID v4.
     *
     * @param ?int $length To limit the length of the uuid (standard uuid count 36 cars). Warning: reducing
     *                     the number of characters breaks the warranty of global unity.
     *
     * @throws \Exception
     */
    public static function uuid(?int $length = null): string
    {
        $uuid = \Ramsey\Uuid\Uuid::uuid4()->toString();

        return $length !== null ? substr($uuid, 0, $length) : $uuid;
    }
}