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<?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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* WinCache provides Windows Cache caching in terms of an application component. |
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* |
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* To use this application component, the [WinCache PHP extension](http://www.iis.net/expand/wincacheforphp) |
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* must be loaded. Also note that "wincache.ucenabled" should be set to "On" in your php.ini file. |
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* |
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* See [[Cache]] manual for common cache operations that are supported by WinCache. |
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* |
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* @author Qiang Xue <[email protected]> |
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* @since 2.0 |
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*/ |
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class WinCache extends Cache |
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{ |
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/** |
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* Checks whether a specified key exists in the cache. |
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* This can be faster than getting the value from the cache if the data is big. |
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* Note that this method does not check whether the dependency associated |
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* with the cached data, if there is any, has changed. So a call to [[get]] |
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* may return false while exists returns true. |
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* @param mixed $key a key identifying the cached value. This can be a simple string or |
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* a complex data structure consisting of factors representing the key. |
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* @return boolean true if a value exists in cache, false if the value is not in the cache or expired. |
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*/ |
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public function exists($key) |
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{ |
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$key = $this->buildKey($key); |
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return wincache_ucache_exists($key); |
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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 $key a unique key identifying the cached value |
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* @return string|boolean the value stored in cache, false if the value is not in the cache or expired. |
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*/ |
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protected function getValue($key) |
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{ |
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return wincache_ucache_get($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 wincache_ucache_get($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 $duration the number of seconds in which the cached value will expire. 0 means never expire. |
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* @return boolean true if the value is successfully stored into cache, false otherwise |
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*/ |
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protected function setValue($key, $value, $duration) |
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{ |
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return wincache_ucache_set($key, $value, $duration); |
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} |
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/** |
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* Stores multiple key-value pairs in cache. |
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* @param array $data array where key corresponds to cache key while value is the value stored |
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* @param integer $duration the number of seconds in which the cached values will expire. 0 means never expire. |
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* @return array array of failed keys |
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*/ |
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protected function setValues($data, $duration) |
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{ |
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return wincache_ucache_set($data, null, $duration); |
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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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* |
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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 $duration the number of seconds in which the cached value will expire. 0 means never expire. |
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* @return boolean true if the value is successfully stored into cache, false otherwise |
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*/ |
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protected function addValue($key, $value, $duration) |
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{ |
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return wincache_ucache_add($key, $value, $duration); |
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} |
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/** |
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* Adds multiple key-value pairs to cache. |
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* The default implementation calls [[addValue()]] multiple times add values one by one. If the underlying cache |
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* storage supports multiadd, this method should be overridden to exploit that feature. |
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* @param array $data array where key corresponds to cache key while value is the value stored |
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* @param integer $duration the number of seconds in which the cached values will expire. 0 means never expire. |
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* @return array array of failed keys |
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*/ |
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protected function addValues($data, $duration) |
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{ |
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return wincache_ucache_add($data, null, $duration); |
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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 wincache_ucache_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 wincache_ucache_clear(); |
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} |
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} |
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yiisoft /
yii2
