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91 lines
2.9 KiB
91 lines
2.9 KiB
<?php |
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/** |
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* @link http://www.yiiframework.com/ |
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* @copyright Copyright (c) 2008 Yii Software LLC |
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* @license http://www.yiiframework.com/license/ |
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*/ |
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namespace yii\caching; |
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/** |
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* ApcCache provides APC caching in terms of an application component. |
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* |
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* To use this application component, the [APC PHP extension](http://www.php.net/apc) must be loaded. |
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* In order to enable APC for CLI you should add "apc.enable_cli = 1" to your php.ini. |
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* |
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* See [[Cache]] for common cache operations that ApcCache supports. |
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* |
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* @author Qiang Xue <qiang.xue@gmail.com> |
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* @since 2.0 |
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*/ |
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class ApcCache extends Cache |
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{ |
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/** |
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* Retrieves a value from cache with a specified key. |
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* This is the implementation of the method declared in the parent class. |
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* @param string $key a unique key identifying the cached value |
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* @return string the value stored in cache, false if the value is not in the cache or expired. |
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*/ |
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protected function getValue($key) |
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{ |
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return apc_fetch($key); |
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} |
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/** |
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* Retrieves multiple values from cache with the specified keys. |
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* @param array $keys a list of keys identifying the cached values |
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* @return array a list of cached values indexed by the keys |
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*/ |
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protected function getValues($keys) |
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{ |
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return apc_fetch($keys); |
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} |
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/** |
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* Stores a value identified by a key in cache. |
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* This is the implementation of the method declared in the parent class. |
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* |
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* @param string $key the key identifying the value to be cached |
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* @param string $value the value to be cached |
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* @param integer $expire the number of seconds in which the cached value will expire. 0 means never expire. |
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* @return boolean true if the value is successfully stored into cache, false otherwise |
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*/ |
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protected function setValue($key, $value, $expire) |
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{ |
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return apc_store($key, $value, $expire); |
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} |
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/** |
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* Stores a value identified by a key into cache if the cache does not contain this key. |
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* This is the implementation of the method declared in the parent class. |
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* @param string $key the key identifying the value to be cached |
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* @param string $value the value to be cached |
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* @param integer $expire the number of seconds in which the cached value will expire. 0 means never expire. |
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* @return boolean true if the value is successfully stored into cache, false otherwise |
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*/ |
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protected function addValue($key, $value, $expire) |
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{ |
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return apc_add($key, $value, $expire); |
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} |
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/** |
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* Deletes a value with the specified key from cache |
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* This is the implementation of the method declared in the parent class. |
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* @param string $key the key of the value to be deleted |
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* @return boolean if no error happens during deletion |
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*/ |
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protected function deleteValue($key) |
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{ |
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return apc_delete($key); |
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} |
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/** |
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* Deletes all values from cache. |
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* This is the implementation of the method declared in the parent class. |
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* @return boolean whether the flush operation was successful. |
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*/ |
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protected function flushValues() |
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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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