155 lines
3.8 KiB
PHP
155 lines
3.8 KiB
PHP
<?php
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/**
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* For the full copyright and license information, please view the
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* docs/licenses/LICENSE.txt file that was distributed with this source code.
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*/
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/**
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* This class requires the PECL APC extension or PECL APCu extension to be installed.
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*/
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class CacheApcCore extends Cache
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{
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/** @var bool Whether APCu is enabled */
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public $apcu;
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/**
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* CacheApcCore constructor.
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*/
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public function __construct()
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{
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if (!extension_loaded('apc') && !extension_loaded('apcu')) {
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throw new PrestaShopException('APC cache has been enabled, but the APC or APCu extension is not available');
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}
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$this->apcu = extension_loaded('apcu');
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}
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/**
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* Delete one or several data from cache (* joker can be used, but avoid it !)
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* E.g.: delete('*'); delete('my_prefix_*'); delete('my_key_name');.
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*
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* @param string $key Cache key
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*
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* @return bool Whether the key was deleted
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*/
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public function delete($key)
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{
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if ($key == '*') {
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$this->flush();
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} elseif (strpos($key, '*') === false) {
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$this->_delete($key);
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} else {
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$pattern = str_replace('\\*', '.*', preg_quote($key));
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$cache_info = (($this->apcu) ? apcu_cache_info() : apc_cache_info(''));
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foreach ($cache_info['cache_list'] as $entry) {
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if (isset($entry['key'])) {
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$key = $entry['key'];
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} else {
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$key = $entry['info'];
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}
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if (preg_match('#^' . $pattern . '$#', $key)) {
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$this->_delete($key);
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}
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}
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}
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return true;
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}
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/**
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* @see Cache::_set()
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*/
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protected function _set($key, $value, $ttl = 0)
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{
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$result = (($this->apcu) ? apcu_store($key, $value, $ttl) : apc_store($key, $value, $ttl));
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if ($result === false) {
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$this->setAdjustTableCacheSize(true);
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}
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return $result;
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}
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/**
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* @see Cache::_get()
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*/
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protected function _get($key)
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{
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return ($this->apcu) ? apcu_fetch($key) : apc_fetch($key);
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}
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/**
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* @see Cache::_exists()
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*/
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protected function _exists($key)
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{
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if (!function_exists('apc_exists') && !function_exists('apcu_exists')) {
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// We're dealing with APC < 3.1.4; use this boolean wrapper as a fallback:
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return (bool) apc_fetch($key);
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} else {
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return ($this->apcu) ? apcu_exists($key) : apc_exists($key);
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}
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}
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/**
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* @see Cache::_delete()
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*/
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protected function _delete($key)
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{
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return ($this->apcu) ? apcu_delete($key) : apc_delete($key);
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}
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/**
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* @see Cache::_writeKeys()
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*/
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protected function _writeKeys()
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{
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}
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/**
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* @see Cache::flush()
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*/
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public function flush()
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{
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return ($this->apcu) ? apcu_clear_cache() : apc_clear_cache();
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}
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/**
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* Store data in the cache.
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*
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* @param string $key Cache Key
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* @param mixed $value Value
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* @param int $ttl Time to live in the cache
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* 0 = unlimited
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*
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* @return bool Whether the data was successfully stored
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*/
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public function set($key, $value, $ttl = 0)
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{
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return $this->_set($key, $value, $ttl);
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}
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/**
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* Retrieve data from the cache.
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*
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* @param string $key Cache key
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*
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* @return mixed Data
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*/
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public function get($key)
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{
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return $this->_get($key);
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}
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/**
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* Check if data has been cached.
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*
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* @param string $key Cache key
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*
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* @return bool Whether the data has been cached
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*/
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public function exists($key)
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{
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return $this->_exists($key);
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}
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}
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