90 lines
2.3 KiB
PHP
90 lines
2.3 KiB
PHP
<?php
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/**
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* @link http://www.yiiframework.com/
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* @copyright Copyright (c) 2008 Yii Software LLC
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* @license http://www.yiiframework.com/license/
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*/
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namespace yii\caching;
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/**
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* ArrayCache provides caching for the current request only by storing the values in an array.
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*
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* See [[Cache]] for common cache operations that ArrayCache supports.
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*
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* Unlike the [[Cache]], ArrayCache allows the expire parameter of [[set]], [[add]], [[multiSet]] and [[multiAdd]] to
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* be a floating point number, so you may specify the time in milliseconds (e.g. 0.1 will be 100 milliseconds).
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*
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* For enhanced performance of ArrayCache, you can disable serialization of the stored data by setting [[$serializer]] to `false`.
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*
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* For more details and usage information on Cache, see the [guide article on caching](guide:caching-overview).
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*
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* @author Carsten Brandt <mail@cebe.cc>
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* @since 2.0
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*/
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class ArrayCache extends Cache
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{
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private $_cache = [];
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/**
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* {@inheritdoc}
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*/
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public function exists($key)
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{
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$key = $this->buildKey($key);
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return isset($this->_cache[$key]) && ($this->_cache[$key][1] === 0 || $this->_cache[$key][1] > microtime(true));
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}
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/**
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* {@inheritdoc}
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*/
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protected function getValue($key)
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{
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if (isset($this->_cache[$key]) && ($this->_cache[$key][1] === 0 || $this->_cache[$key][1] > microtime(true))) {
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return $this->_cache[$key][0];
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}
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return false;
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}
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/**
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* {@inheritdoc}
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*/
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protected function setValue($key, $value, $duration)
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{
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$this->_cache[$key] = [$value, $duration === 0 ? 0 : microtime(true) + $duration];
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return true;
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}
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/**
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* {@inheritdoc}
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*/
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protected function addValue($key, $value, $duration)
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{
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if (isset($this->_cache[$key]) && ($this->_cache[$key][1] === 0 || $this->_cache[$key][1] > microtime(true))) {
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return false;
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}
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$this->_cache[$key] = [$value, $duration === 0 ? 0 : microtime(true) + $duration];
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return true;
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}
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/**
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* {@inheritdoc}
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*/
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protected function deleteValue($key)
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{
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unset($this->_cache[$key]);
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return true;
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}
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/**
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* {@inheritdoc}
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*/
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protected function flushValues()
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{
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$this->_cache = [];
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return true;
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}
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}
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