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