phpmyadmin / error-reporting-server

        if (null === $version) {

            $version = max(array_merge($versions, array_keys($migrations)));

        } else {

            if (0 != $version && !isset($migrations[$version])) {

                $this->output->writeln(sprintf(

                    '<comment>warning</comment> %s is not a valid version',

                    $version

                ));

                return;

            }

        }

        // are we migrating up or down?

        $direction = $version > $current ? MigrationInterface::UP : MigrationInterface::DOWN;

        }

        // Check the target version exists

        if (0 !== $version && !isset($migrations[$version])) {

            $this->getOutput()->writeln("<error>Target version ($version) not found</error>");

            return;

        }

        // Revert the migration(s)

        krsort($migrations);