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<?php
/**
* Listener for HTTP_Request and HTTP_Response objects
*
* PHP versions 4 and 5
*
* LICENSE:
*
* Copyright (c) 2002-2007, Richard Heyes
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* o Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* o Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* o The names of the authors may not be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* @category HTTP
* @package HTTP_Request
* @author Alexey Borzov <avb@php.net>
* @copyright 2002-2007 Richard Heyes
* @license http://opensource.org/licenses/bsd-license.php New BSD License
* @version CVS: $Id: Listener.php,v 1.3 2007/05/18 10:33:31 avb Exp $
* @link http://pear.php.net/package/HTTP_Request/
*/
/**
* Listener for HTTP_Request and HTTP_Response objects
*
* This class implements the Observer part of a Subject-Observer
* design pattern.
*
* @category HTTP
* @package HTTP_Request
* @author Alexey Borzov <avb@php.net>
* @version Release: 1.4.4
*/
class HTTP_Request_Listener
{
/**
* A listener's identifier
* @var string
*/
var $_id;
/**
* Constructor, sets the object's identifier
*
* @access public
*/
function HTTP_Request_Listener()
{
$this->_id = md5(uniqid('http_request_', 1));
}
/**
* Returns the listener's identifier
*
* @access public
* @return string
*/
function getId()
{
return $this->_id;
}
/**
* This method is called when Listener is notified of an event
*
* @access public
* @param object an object the listener is attached to
* @param string Event name
* @param mixed Additional data
* @abstract
*/
function update(&$subject, $event, $data = null)
{
echo "Notified of event: '$event'\n";
if (null !== $data) {
echo "Additional data: ";
var_dump($data);
}
}
}
?>