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<?php |
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/** |
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* Xyster Framework |
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* |
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* LICENSE |
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* |
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* This source file is subject to the new BSD license that is bundled |
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* with this package in the file LICENSE.txt. |
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* It is also available through the world-wide-web at this URL: |
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* http://www.opensource.org/licenses/bsd-license.php |
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* If you did not receive a copy of the license and are unable to |
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* obtain it through the world-wide-web, please send an email |
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* to xyster@devweblog.org so we can send you a copy immediately. |
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* |
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* @category Xyster |
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* @package Xyster_Controller |
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* @subpackage Plugins |
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* @copyright Copyright (c) 2007 Irrational Logic (http://devweblog.org) |
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* @license http://www.opensource.org/licenses/bsd-license.php New BSD License |
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* @version $Id: Cache.php 85 2007-09-13 00:07:24Z doublecompile $ |
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*/ |
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/** |
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* Turns off the PHP anti-caching headers sent when a session is active |
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*/ |
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ini_set('session.cache_limiter', 'none'); |
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/** |
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* Zend_Controller_Plugin_Abstract |
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*/ |
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require_once 'Zend/Controller/Plugin/Abstract.php'; |
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/** |
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* Cache control plugin |
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* |
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* Notice: The inclusion of this class turns off PHP's |
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* <code>session.cache_limiter</code> directive. Please be aware of the |
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* effects. Resultantly, this class MUST be required/included BEFORE the user |
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* session is started. |
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* |
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* @category Xyster |
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* @package Xyster_Controller |
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* @subpackage Plugins |
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* @copyright Copyright (c) 2007 Irrational Logic (http://devweblog.org) |
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* @license http://www.opensource.org/licenses/bsd-license.php New BSD License |
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*/ |
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class Xyster_Controller_Plugin_Cache extends Zend_Controller_Plugin_Abstract |
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{ |
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/** |
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* Called before Zend_Controller_Front exits its dispatch loop. |
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* |
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*/ |
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public function dispatchLoopShutdown() |
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{ |
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$sentType = false; |
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$sentTag = false; |
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|
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$response = $this->getResponse(); |
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foreach( $response->getHeaders() as $header ) { |
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if ( !strcasecmp($header['name'], 'content-type') ) { |
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$sentType = true; |
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} |
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if ( !strcasecmp($header['name'], 'etag') ) { |
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$sentTag = true; |
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} |
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} |
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if ( !$response->isRedirect() && !$sentType && !$sentTag ) { |
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// these are basically the same anti-cache headers that PHP sends |
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$response->setRawHeader('Cache-Control: no-store, no-cache, must-revalidate, max-age=0, pre-check=0'); |
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$response->setRawHeader('Pragma: no-cache'); |
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$response->setRawHeader('Expires: ' . gmdate('D, d M Y H:i:s', strtotime('-20 years')) . ' GMT'); |
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// also send content-length |
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$response->setRawHeader('Content-Length: ' . strlen($response->getBody())); |
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} |
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if ( $sentTag && !$sentType ) { // last-mod responses, but not files |
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$response->setRawHeader('Content-Length: ' . strlen($response->getBody())); |
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} |
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} |
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} |
