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ZeedFramework/library/Zeed/Session/Storage/Memcache.php

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+<?php
+/**
+ * iNewS Project
+ *
+ * LICENSE
+ *
+ * http://www.inews.com.cn/license/inews
+ *
+ * @category   iNewS
+ * @package    ChangeMe
+ * @subpackage ChangeMe
+ * @copyright  Copyright (c) 2008 Zeed Technologies PRC Inc. (http://www.inews.com.cn)
+ * @author     xSharp ( GTalk: xSharp@gmail.com )
+ * @since      Apr 2, 2010
+ * @version    SVN: $Id$
+ */
+
+/**
+ * Zend_Session_SaveHandler_DbTable
+ *
+ * @category   Zend
+ * @package    Zend_Session
+ * @subpackage SaveHandler
+ * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ */
+class Zeed_Session_Storage_Memcache extends Zend_Cache_Backend_Memcached implements Zeed_Session_Storage_Interface
+{
+    /**
+     * Session lifetime
+     *
+     * @var int
+     */
+    protected $_lifetime = false;
+    
+    /**
+     * Whether or not the lifetime of an existing session should be overridden
+     *
+     * @var boolean
+     */
+    protected $_overrideLifetime = false;
+    
+    /**
+     * Session 保存路径
+     * 该值从 session_set_save_handler.Open 中传递过来
+     *
+     * @var string
+     */
+    protected $_sessionSavePath;
+    
+    /**
+     * Session 名称
+     * 该值从 session_set_save_handler.Open 中传递过来
+     *
+     * @var string
+     */
+    protected $_sessionName;
+    
+    /**
+     * Constructor
+     *
+     * lifetime          => (integer) Session lifetime (optional; default: ini_get('session.gc_maxlifetime'))
+     *
+     * @param array $config
+     * @return void
+     * @throws Zeed_Exception
+     */
+    public function __construct($config)
+    {
+        if (! is_array($config)) {
+            throw new Zeed_Exception('$config must be an array of key/value pairs containing ' . 'configuration options for Zeed_Session_Storage_Memcached.');
+        }
+        
+        foreach ($config as $key => $value) {
+            do {
+                switch ($key) {
+                    case 'lifetime' :
+                        $this->setLifetime($value);
+                        break;
+                    default :
+                        // unrecognized options passed to parent::__construct()
+                        break 2;
+                }
+                unset($config[$key]);
+            } while (false);
+        }
+        
+        parent::__construct($config);
+    }
+    
+    /**
+     * Destructor
+     *
+     * @return void
+     */
+    public function __destruct()
+    {
+        Zeed_Session::writeClose();
+    }
+    
+    /**
+     * 设置 Session 生命周期，如果设置了一个无效值那么使用系统配置 PHP.INI
+     *
+     * @param integer $lifetime
+     * @return Zend_Session_SaveHandler_DbTable
+     */
+    public function setLifetime($lifetime)
+    {
+        if (empty($lifetime) || $lifetime < 0) {
+            $this->_lifetime = (int) ini_get('session.gc_maxlifetime');
+        } else {
+            $this->_lifetime = (int) $lifetime;
+        }
+    }
+    
+    /**
+     * 获取 Session 生命周期
+     *
+     * @return integer
+     */
+    public function getLifetime($specificLifetime = false)
+    {
+        return $this->_lifetime;
+    }
+    
+    /**
+     * Open Session
+     *
+     * @param string $save_path
+     * @param string $name
+     * @return boolean
+     */
+    public function open($savePath, $name)
+    {
+        $this->_sessionSavePath = $savePath;
+        $this->_sessionName = $name;
+        
+        return true;
+    }
+    
+    /**
+     * Close session
+     *
+     * @return boolean
+     */
+    public function close()
+    {
+        return true;
+    }
+    
+    /**
+     * Read session data
+     *
+     * @param string $id
+     * @return string
+     */
+    public function read($id)
+    {
+        $return = '';
+        
+        if (false != $data = $this->load($id)) {
+            $return = $data;
+        }
+        
+        return $return;
+    }
+    
+    /**
+     * Write session data
+     *
+     * @param string $id
+     * @param string $data
+     * @return boolean
+     */
+    public function write($id, $data)
+    {
+        $return = false;
+        
+        if ($this->save($data, $id, array(), $this->_lifetime)) {
+            $return = true;
+        }
+        
+        return $return;
+    }
+    
+    /**
+     * Destroy session
+     *
+     * @param string $id
+     * @return boolean
+     */
+    public function destroy($id)
+    {
+        $return = false;
+        
+        if ($this->remove($id)) {
+            $return = true;
+        }
+        
+        return $return;
+    }
+    
+    /**
+     * Garbage Collection
+     *
+     * @param int $maxlifetime
+     * @return true
+     */
+    public function gc($maxlifetime)
+    {
+        return true;
+    }
+}
+
+// End ^ LF ^ encoding