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@rob006 @cebe @klimov-paul @lichunqiang @dynasource @SilverFire
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<?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]], [[multiSet]] and [[multiAdd]] to
* be a floating point number, so you may specify the time in milliseconds (e.g. 0.1 will be 100 milliseconds).
*
* For enhanced performance of ArrayCache, you can disable serialization of the stored data by setting [[$serializer]] to `false`.
*
* For more details and usage information on Cache, see the [guide article on caching](guide:caching-overview).
*
* @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];
}
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;
}
$this->_cache[$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;
}
}
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