Version.php

<?php
/**
 * Piwik - free/libre analytics platform
 *
 * @link http://piwik.org
 * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
 *
 */

namespace Piwik;

/**
 * Piwik version information.
 *
 * @api
 */
final class Version
{
    /**
     * The current Piwik version.
     * @var string
     */
    const VERSION = '3.0.2-b6';

    public function isStableVersion($version)
    {
        return (bool) preg_match('/^(\d+)\.(\d+)\.(\d+)$/', $version);
    }

    public function isVersionNumber($version)
    {
        return $this->isStableVersion($version) || $this->isNonStableVersion($version);
    }

    private function isNonStableVersion($version)
    {
        return (bool) preg_match('/^(\d+)\.(\d+)\.(\d+)-.{1,4}(\d+)$/', $version);
    }
}