114 lines
2.0 KiB
PHP
114 lines
2.0 KiB
PHP
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<?php
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namespace Doctrine\Common\Cache;
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use function time;
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/**
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* Array cache driver.
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*
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* @link www.doctrine-project.org
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*/
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class ArrayCache extends CacheProvider
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{
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/** @var array[] $data each element being a tuple of [$data, $expiration], where the expiration is int|bool */
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private $data = [];
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/** @var int */
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private $hitsCount = 0;
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/** @var int */
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private $missesCount = 0;
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/** @var int */
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private $upTime;
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/**
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* {@inheritdoc}
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*/
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public function __construct()
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{
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$this->upTime = time();
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}
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/**
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* {@inheritdoc}
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*/
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protected function doFetch($id)
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{
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if (! $this->doContains($id)) {
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$this->missesCount += 1;
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return false;
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}
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$this->hitsCount += 1;
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return $this->data[$id][0];
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}
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/**
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* {@inheritdoc}
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*/
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protected function doContains($id)
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{
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if (! isset($this->data[$id])) {
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return false;
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}
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$expiration = $this->data[$id][1];
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if ($expiration && $expiration < time()) {
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$this->doDelete($id);
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return false;
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}
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return true;
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}
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/**
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* {@inheritdoc}
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*/
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protected function doSave($id, $data, $lifeTime = 0)
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{
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$this->data[$id] = [$data, $lifeTime ? time() + $lifeTime : false];
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return true;
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}
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/**
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* {@inheritdoc}
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*/
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protected function doDelete($id)
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{
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unset($this->data[$id]);
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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 doFlush()
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{
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$this->data = [];
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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 doGetStats()
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{
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return [
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Cache::STATS_HITS => $this->hitsCount,
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Cache::STATS_MISSES => $this->missesCount,
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Cache::STATS_UPTIME => $this->upTime,
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Cache::STATS_MEMORY_USAGE => null,
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Cache::STATS_MEMORY_AVAILABLE => null,
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];
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}
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}
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