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<?php |
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namespace Yiisoft\Cache; |
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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' => Yiisoft\Cache\Cache::class, |
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* 'handler' => [ |
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* '__class' => Yiisoft\Cache\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 {@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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final class ApcCache extends SimpleCache |
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{ |
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private const TTL_INFINITY = 0; |
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public function hasValue(string $key): bool |
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{ |
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return (bool)\apcu_exists($key); |
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} |
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protected function getValue(string $key, $default = null) |
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{ |
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$value = \apcu_fetch($key, $success); |
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return $success ? $value : $default; |
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} |
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protected function getValues(array $keys, $default = null): array |
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{ |
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// TODO: test that all keys are returned |
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return \apcu_fetch($keys, $succses) ?: []; |
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} |
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protected function setValue(string $key, $value, ?int $ttl): bool |
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{ |
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return (bool)\apcu_store($key, $value, $ttl ?? self::TTL_INFINITY); |
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} |
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protected function setValues(array $values, ?int $ttl): bool |
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{ |
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return \apcu_store($values, null, $ttl ?? self::TTL_INFINITY) === []; |
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} |
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protected function deleteValue(string $key): bool |
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{ |
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return (bool)\apcu_delete($key); |
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} |
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public function clear(): bool |
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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 /
cache
