ClusterOptions example

foreach ($optionsInDsn as $parameter => $value) {
                        $options[$parameter] = $value;
                    }
                }

                $newServers[] = $matches['host'];
            }

            $option = isset($matches['options']) ? '?'.$matches['options'] : '';
            $connectionString = $protocol.'://'.implode(',', $newServers).$option;

            $clusterOptions = new ClusterOptions();
            $clusterOptions->credentials($username, $password);

            $client = new Cluster($connectionString, $clusterOptions);

            $bucket = $client->bucket($matches['bucketName']);
            $collection = $bucket->defaultCollection();
            if (!empty($matches['scopeName'])) {
                $scope = $bucket->scope($matches['scopeName']);
                $collection = $scope->collection($matches['collectionName']);
            }