heyu/ThinkPHP/Extend/Vendor/Zend/Version.php

<?php
/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 *
 * @category   Zend
 * @package    Zend_Version
 * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 * @version    $Id: Version.php 2504 2011-12-28 07:35:29Z liu21st $
 */

/**
 * Class to store and retrieve the version of Zend Framework.
 *
 * @category   Zend
 * @package    Zend_Version
 * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */
final class Zend_Version
{
    /**
     * Zend Framework version identification - see compareVersion()
     */
    const VERSION = '1.9.5';

    /**
     * Compare the specified Zend Framework version string $version
     * with the current Zend_Version::VERSION of Zend Framework.
     *
     * @param  string  $version  A version string (e.g. "0.7.1").
     * @return boolean           -1 if the $version is older,
     *                           0 if they are the same,
     *                           and +1 if $version is newer.
     *
     */
    public static function compareVersion($version)
    {
        $version = strtolower($version);
        $version = preg_replace('/(\d)pr(\d?)/', '$1a$2', $version);
        return version_compare($version, strtolower(self::VERSION));
    }
}