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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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use yii\base\InvalidConfigException; |
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/** |
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* ApcCache provides APCu caching in terms of an application component. |
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* |
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* To use this application component, the [APCu PHP extension](http://www.php.net/apcu) must be loaded. |
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* In order to enable APCu for CLI you should add "apc.enable_cli = 1" to your php.ini. |
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* |
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* Application configuration example: |
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* |
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* ```php |
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* return [ |
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* 'components' => [ |
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* 'cache' => [ |
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* 'class' => yii\caching\Cache::class, |
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* 'handler' => [ |
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* 'class' => yii\caching\ApcCache::class, |
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* ], |
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* ], |
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* // ... |
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* ], |
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* // ... |
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* ]; |
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* ``` |
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* |
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* See [[\Psr\SimpleCache\CacheInterface]] for common cache operations that ApcCache supports. |
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* |
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* For more details and usage information on Cache, see the [guide article on caching](guide:caching-overview). |
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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 ApcCache extends SimpleCache |
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{ |
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/** |
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* Initializes this application component. |
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* It checks if extension required is loaded. |
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* @throws \yii\base\InvalidConfigException |
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*/ |
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public function init() |
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{ |
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parent::init(); |
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if (!extension_loaded('apcu')) { |
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throw new InvalidConfigException('ApcCache requires PHP apcu extension to be loaded.'); |
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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 has($key) |
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{ |
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return apcu_exists($this->normalizeKey($key)); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function getValue($key) |
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{ |
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return apcu_fetch($key); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function getValues($keys) |
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{ |
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$values = apcu_fetch($keys); |
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return is_array($values) ? $values : []; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function setValue($key, $value, $ttl) |
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{ |
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return apcu_store($key, $value, $ttl); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function setValues($values, $ttl) |
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{ |
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$result = apcu_store($values, null, $ttl); |
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return is_array($result); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function deleteValue($key) |
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{ |
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return apcu_delete($key); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function clear() |
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{ |
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return apcu_clear_cache(); |
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} |
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} |
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yiisoft /
yii2
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