mirror of
https://github.com/kamilwylegala/cakephp2-php8.git
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134 lines
3.5 KiB
PHP
134 lines
3.5 KiB
PHP
<?php
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/**
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* CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
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* Copyright 2005-2012, Cake Software Foundation, Inc. (http://cakefoundation.org)
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*
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* Licensed under The MIT License
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* Redistributions of files must retain the above copyright notice.
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*
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* @copyright Copyright 2005-2012, Cake Software Foundation, Inc. (http://cakefoundation.org)
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* @link http://cakephp.org CakePHP(tm) Project
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* @package Cake.Cache
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* @since CakePHP(tm) v 1.2.0.4933
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* @license MIT License (http://www.opensource.org/licenses/mit-license.php)
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*/
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/**
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* Storage engine for CakePHP caching
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*
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* @package Cake.Cache
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*/
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abstract class CacheEngine {
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/**
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* Settings of current engine instance
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*
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* @var array
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*/
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public $settings = array();
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/**
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* Initialize the cache engine
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*
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* Called automatically by the cache frontend
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*
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* @param array $settings Associative array of parameters for the engine
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* @return boolean True if the engine has been successfully initialized, false if not
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*/
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public function init($settings = array()) {
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$this->settings = array_merge(
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array('prefix' => 'cake_', 'duration' => 3600, 'probability' => 100),
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$this->settings,
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$settings
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);
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if (!is_numeric($this->settings['duration'])) {
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$this->settings['duration'] = strtotime($this->settings['duration']) - time();
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}
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return true;
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}
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/**
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* Garbage collection
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*
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* Permanently remove all expired and deleted data
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* @return void
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*/
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public function gc() {
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}
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/**
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* Write value for a key into cache
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*
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* @param string $key Identifier for the data
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* @param mixed $value Data to be cached
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* @param mixed $duration How long to cache for.
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* @return boolean True if the data was successfully cached, false on failure
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*/
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abstract public function write($key, $value, $duration);
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/**
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* Read a key from the cache
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*
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* @param string $key Identifier for the data
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* @return mixed The cached data, or false if the data doesn't exist, has expired, or if there was an error fetching it
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*/
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abstract public function read($key);
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/**
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* Increment a number under the key and return incremented value
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*
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* @param string $key Identifier for the data
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* @param integer $offset How much to add
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* @return New incremented value, false otherwise
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*/
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abstract public function increment($key, $offset = 1);
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/**
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* Decrement a number under the key and return decremented value
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*
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* @param string $key Identifier for the data
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* @param integer $offset How much to subtract
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* @return New incremented value, false otherwise
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*/
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abstract public function decrement($key, $offset = 1);
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/**
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* Delete a key from the cache
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*
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* @param string $key Identifier for the data
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* @return boolean True if the value was successfully deleted, false if it didn't exist or couldn't be removed
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*/
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abstract public function delete($key);
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/**
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* Delete all keys from the cache
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*
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* @param boolean $check if true will check expiration, otherwise delete all
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* @return boolean True if the cache was successfully cleared, false otherwise
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*/
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abstract public function clear($check);
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/**
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* Cache Engine settings
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*
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* @return array settings
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*/
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public function settings() {
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return $this->settings;
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}
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/**
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* Generates a safe key for use with cache engine storage engines.
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*
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* @param string $key the key passed over
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* @return mixed string $key or false
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*/
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public function key($key) {
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if (empty($key)) {
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return false;
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}
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$key = Inflector::underscore(str_replace(array(DS, '/', '.'), '_', strval($key)));
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return $key;
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}
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}
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