library/Zend/Version.php

@@ -0,0 +1,81 @@
+<?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) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ * @version    $Id$
+ */
+
+/**
+ * Class to store and retrieve the version of Zend Framework.
+ *
+ * @category   Zend
+ * @package    Zend_Version
+ * @copyright  Copyright (c) 2005-2011 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 = '1.11.4';
+
+    /**
+     * 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;
+    }
+}