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<?php |
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/** |
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* This file contains functions that deal with getting and setting cache values. |
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* |
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* @name ElkArte Forum |
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* @copyright ElkArte Forum contributors |
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* @license BSD http://opensource.org/licenses/BSD-3-Clause |
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* |
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* @version 1.1 |
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* |
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*/ |
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namespace ElkArte\sources\subs\CacheMethod; |
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/** |
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* Alternative PHP Cache or APC / APCu |
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*/ |
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class Apc extends Cache_Method_Abstract |
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{ |
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/** |
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* {@inheritdoc} |
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*/ |
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protected $title = 'Alternative PHP Cache'; |
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/** |
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* Whether to use the APCu functions or the original APC ones. |
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* |
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* @var bool |
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*/ |
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protected $apcu = false; |
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/** |
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* {@inheritdoc} |
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*/ |
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public function __construct($options) |
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{ |
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2 |
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parent::__construct($options); |
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$this->apcu = function_exists('apcu_store'); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function exists($key) |
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{ |
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$this->get($key); |
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return !$this->is_miss; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function put($key, $value, $ttl = 120) |
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{ |
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$prefixedKey = $this->getprefixedKey($key); |
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// An extended key is needed to counteract a bug in APC. |
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if ($this->apcu) |
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{ |
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if ($value === null) |
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apcu_delete($prefixedKey); |
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else |
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apcu_store($prefixedKey, $value, $ttl); |
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} |
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else |
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{ |
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if ($value === null) |
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apc_delete($prefixedKey); |
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else |
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apc_store($prefixedKey, $value, $ttl); |
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} |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function get($key, $ttl = 120) |
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{ |
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$prefixedKey = $this->getprefixedKey($key); |
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$success = false; |
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if ($this->apcu) |
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$result = apcu_fetch($prefixedKey, $success); |
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else |
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$result = apc_fetch($prefixedKey, $success); |
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$this->is_miss = !$success; |
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/* |
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* Let's be conssistent, yes? All other cache methods |
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* supported by ElkArte return null on failure to grab |
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* the specified cache entry. |
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*/ |
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if ($this->is_miss) |
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return; |
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return $result; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function clean($type = '') |
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{ |
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if ($this->apcu) |
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apcu_clear_cache(); |
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// If passed a type, clear that type out |
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elseif ($type === '' || $type === 'data') |
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{ |
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apc_clear_cache('user'); |
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apc_clear_cache('system'); |
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} |
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elseif ($type === 'user') |
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apc_clear_cache('user'); |
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1 |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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2 |
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public function isAvailable() |
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{ |
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return function_exists('apc_store') || function_exists('apcu_store'); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function details() |
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{ |
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return array('title' => $this->title, 'version' => phpversion($this->apcu ? 'apcu' : 'apc')); |
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} |
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} |
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elkarte /
Elkarte
