<?php

    private function getMultiple(array $keys)
    {

        try {
            $pipeline = $this->client->pipeline();
            $result = [];

            for ($i = 0; $i < count($keys); $i++) {
                $result[$i] = $this->client->get($keys[$i]); //$pipeline->get("$keys[$i]");
            }

            return $result;
        } catch (\Exception $e) {
            $result = [];
            foreach ($keys as $key) {
                $result[$key] = null;
            }
            return $result;
        }
    }