116 lines
3.3 KiB
PHP
116 lines
3.3 KiB
PHP
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<?php
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/**
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* Zend 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://framework.zend.com/license/new-bsd
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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 license@zend.com so we can send you a copy immediately.
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*
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* @category Zend
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* @package Zend_Cache
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* @subpackage Frontend
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* @copyright Copyright (c) 2005-2007 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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*/
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/**
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* Zend_Cache_Core
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*/
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require_once 'Zend/Cache/Core.php';
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/**
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* @package Zend_Cache
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* @subpackage Frontend
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* @copyright Copyright (c) 2005-2007 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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*/
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class Zend_Cache_Frontend_File extends Zend_Cache_Core
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{
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/**
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* Available options
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*
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* ====> (string) masterFile :
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* - the complete path and name of the master file
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* - this option has to be set !
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*
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* @var array available options
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*/
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protected $_specificOptions = array(
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'masterFile' => ''
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);
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/**
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* Master file mtime
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*
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* @var int
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*/
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private $_masterFile_mtime = null;
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/**
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* Constructor
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*
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* @param array $options associative array of options
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*/
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public function __construct($options = array())
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{
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if (!isset($options['masterFile'])) {
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Zend_Cache::throwException('masterFile option must be set');
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}
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while (list($name, $value) = each($options)) {
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$this->setOption($name, $value);
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}
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clearstatcache();
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if (!($this->_masterFile_mtime = @filemtime($options['masterFile']))) {
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Zend_Cache::throwException('Unable to read masterFile : '.$this->_specificOptions['masterFile']);
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}
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}
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/**
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* Test if a cache is available for the given id and (if yes) return it (false else)
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*
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* @param string $id cache id
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* @param boolean $doNotTestCacheValidity if set to true, the cache validity won't be tested
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* @param boolean $doNotUnserialize do not serialize (even if automaticSerialization is true) => for internal use
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* @return mixed cached datas (or false)
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*/
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public function load($id, $doNotTestCacheValidity = false, $doNotUnserialize = false)
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{
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if (!$doNotTestCacheValidity) {
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if ($this->test($id)) {
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return parent::load($id, true, $doNotUnserialize);
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}
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return false;
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}
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return parent::load($id, true, $doNotUnserialize);
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}
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/**
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* Test if a cache is available for the given id
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*
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* @param string $id cache id
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* @return boolean true is a cache is available, false else
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*/
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public function test($id)
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{
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$lastModified = parent::test($id);
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if ($lastModified) {
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if ($lastModified > $this->_masterFile_mtime) {
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return $lastModified;
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}
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}
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return false;
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}
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}
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