plugins/CoreAdminHome/Commands/VersionInfo.php

<?php

/**
 * Matomo - free/libre analytics platform
 *
 * @link    https://matomo.org
 * @license https://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
 */

namespace Piwik\Plugins\CoreAdminHome\Commands;

use Piwik\Plugin\ConsoleCommand;
use Piwik\Version;

class VersionInfo extends ConsoleCommand
{
    protected function configure()
    {
        $this->setName('core:version');
        $this->setDescription('Returns the current version information of this Matomo instance.');
        $this->setHelp("This command can be used to set get the version information of the current Matomo instance.");
    }

    protected function doExecute(): int
    {
        $this->getOutput()->writeln(Version::VERSION);

        return self::SUCCESS;
    }
}