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<?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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* Application configuration example: |
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* |
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* ```php |
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* return [ |
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* 'components' => [ |
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* 'cache' => [ |
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* 'class' => yii\caching\Cache::class, |
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* 'handler' => [ |
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* 'class' => yii\caching\ArrayCache::class, |
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* ], |
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* ], |
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* // ... |
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* ], |
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* // ... |
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* ]; |
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* ``` |
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* |
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* See [[\Psr\SimpleCache\CacheInterface]] 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()]] and [[setMultiple()]] 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 <[email protected]> |
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* @since 2.0 |
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*/ |
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class ArrayCache extends SimpleCache |
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{ |
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/** |
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* @var array cached values. |
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*/ |
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private $_cache = []; |
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/** |
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* @inheritdoc |
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*/ |
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public function has($key) |
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{ |
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$key = $this->normalizeKey($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, $ttl) |
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{ |
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$this->_cache[$key] = [$value, $ttl === 0 ? 0 : microtime(true) + $ttl]; |
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return true; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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3 |
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protected function deleteValue($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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public function clear() |
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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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yiisoft /
yii2
