<?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) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

 * @license    http://framework.zend.com/license/new-bsd     New BSD License

 * @version    $Id: Version.php 23455 2010-11-29 16:24:55Z matthew $

 */

/**

 * Class to store and retrieve the version of Zend Framework.

 *

 * @category   Zend

 * @package    Zend_Version

 * @copyright  Copyright (c) 2005-2010 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 = '1.11.1';

    /**

     * The latest stable version Zend Framework available

     * 

     * @var string

     */

    protected static $_lastestVersion;

    /**

     * 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 int           -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));

    }

    /**

     * Fetches the version of the latest stable release

     * 

     * @link http://framework.zend.com/download/latest

     * @return string

     */

    public static function getLatest()

    {

        if (null === self::$_lastestVersion) {

            self::$_lastestVersion = 'not available';

            $handle = fopen('http://framework.zend.com/api/zf-version', 'r');        

            if (false !== $handle) {

                self::$_lastestVersion = stream_get_contents($handle);

                fclose($handle);

            }

        }

        return self::$_lastestVersion;

    }

}