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 <?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_Http
  * @subpackage UserAgent
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  * @version    $Id: NonPersistent.php 20096 2010-01-06 02:05:09Z bkarwin $
  */
 
 
 /**
  * @see Zend_Http_UserAgent_Storage_Interface
  */
 // require_once 'Zend/Http/UserAgent/Storage.php';
 
 
 /**
  * Non-Persistent Browser Storage
  *
  * Since HTTP Browserentication happens again on each request, this will always be
  * re-populated. So there's no need to use sessions, this simple value class
  * will hold the data for rest of the current request.
  *
  * @package    Zend_Http
  * @subpackage UserAgent
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  */
 class Zend_Http_UserAgent_Storage_NonPersistent
     implements Zend_Http_UserAgent_Storage
 {
     /**
      * Holds the actual Browser data
      * @var mixed
      */
     protected $_data;
 
     /**
      * Returns true if and only if storage is empty
      *
      * @throws Zend_Http_UserAgent_Storage_Exception If it is impossible to determine whether storage is empty
      * @return boolean
      */
     public function isEmpty()
     {
         return empty($this->_data);
     }
 
     /**
      * Returns the contents of storage
      *
      * Behavior is undefined when storage is empty.
      *
      * @throws Zend_Http_UserAgent_Storage_Exception If reading contents from storage is impossible
      * @return mixed
      */
     public function read()
     {
         return $this->_data;
     }
 
     /**
      * Writes $contents to storage
      *
      * @param  mixed $contents
      * @throws Zend_Http_UserAgent_Storage_Exception If writing $contents to storage is impossible
      * @return void
      */
     public function write($contents)
     {
         $this->_data = $contents;
     }
 
     /**
      * Clears contents from storage
      *
      * @throws Zend_Http_UserAgent_Storage_Exception If clearing contents from storage is impossible
      * @return void
      */
     public function clear()
     {
         $this->_data = null;
     }
 }