RidProvider.php

<?php

namespace App\Service;

use Ramsey\Uuid\Uuid;

/**
 * Class RidProvider
 */
class RidProvider
{
    /**
     * @var string
     */
    private static $rid;

    /**
     * RidProvider constructor.
     */
    private function __construct()
    {
    }

    /**
     * @return string
     */
    public static function getRid(): string
    {
        if (empty(self::$rid)) {
            self::$rid = (string) Uuid::uuid4();
        }

        return self::$rid;
    }
}