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<?php |
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/** |
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* Part of the Joomla Framework Cache Package |
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* |
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* @copyright Copyright (C) 2005 - 2015 Open Source Matters, Inc. All rights reserved. |
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* @license GNU General Public License version 2 or later; see LICENSE |
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*/ |
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namespace Joomla\Cache; |
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use Joomla\Cache\Item\HasExpirationDateInterface; |
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use Psr\Cache\CacheItemInterface; |
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use Joomla\Cache\Item\Item; |
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/** |
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* APC cache driver for the Joomla Framework. |
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* |
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* @since 1.0 |
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*/ |
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class Apc extends Cache |
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{ |
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/** |
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* This will wipe out the entire cache's keys |
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* |
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* @return boolean The result of the clear operation. |
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* |
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* @since 1.0 |
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*/ |
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public function clear() |
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{ |
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return apc_clear_cache('user'); |
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} |
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/** |
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* Method to get a storage entry value from a key. |
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* |
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* @param string $key The storage entry identifier. |
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* |
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* @return CacheItemInterface |
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* |
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* @since 1.0 |
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* @throws \RuntimeException |
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*/ |
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public function getItem($key) |
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{ |
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$success = false; |
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$value = apc_fetch($key, $success); |
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$item = new Item($key); |
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if ($success) |
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{ |
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$item->set($value); |
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} |
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return $item; |
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} |
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/** |
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* Obtain multiple CacheItems by their unique keys. |
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* |
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* @param array $keys A list of keys that can obtained in a single operation. |
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* |
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* @return array An associative array of CacheItem objects keyed on the cache key. |
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* |
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* @since 1.0 |
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*/ |
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public function getItems(array $keys = array()) |
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{ |
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$items = array(); |
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$success = false; |
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$values = apc_fetch($keys, $success); |
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if ($success && is_array($values)) |
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foreach ($keys as $key) |
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$items[$key] = new Item($key); |
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if (isset($values[$key])) |
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{ |
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$items[$key]->set($values[$key]); |
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} |
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} |
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} |
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return $items; |
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} |
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/** |
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* Method to remove a storage entry for a key. |
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* |
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* @param string $key The storage entry identifier. |
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* |
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* @return boolean |
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* |
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* @since 1.0 |
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*/ |
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public function deleteItem($key) |
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{ |
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if ($this->hasItem($key)) |
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{ |
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return apc_delete($key); |
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} |
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// If the item doesn't exist, no error |
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return true; |
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} |
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/** |
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* Persists a cache item immediately. |
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* |
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* @param CacheItemInterface $item The cache item to save. |
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* |
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* @return static |
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* The invoked object. |
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*/ |
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public function save(CacheItemInterface $item) |
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{ |
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// If we are able to find out when the item expires - find out. Else bail. |
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if ($item instanceof HasExpirationDateInterface) |
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{ |
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$ttl = $this->convertItemExpiryToSeconds($item); |
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} |
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else |
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{ |
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$ttl = 0; |
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} |
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return apc_store($item->getKey(), $item->get(), $ttl); |
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} |
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/** |
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* Method to determine whether a storage entry has been set for a key. |
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* |
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* @param string $key The storage entry identifier. |
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* |
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* @return boolean |
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* |
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* @since 1.0 |
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*/ |
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public function hasItem($key) |
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{ |
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return apc_exists($key); |
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} |
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/** |
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* Test to see if the CacheItemPoolInterface is available |
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* |
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* @return boolean True on success, false otherwise |
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* |
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* @since __DEPLOY_VERSION__ |
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*/ |
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public static function isSupported() |
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{ |
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$supported = extension_loaded('apc') && ini_get('apc.enabled'); |
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// If on the CLI interface, the `apc.enable_cli` option must also be enabled |
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if ($supported && php_sapi_name() === 'cli') |
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{ |
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$supported = ini_get('apc.enable_cli'); |
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} |
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return (bool) $supported; |
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} |
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} |
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joomla-framework /
cache
