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<?php |
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namespace Yiisoft\Cache; |
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use Yiisoft\Cache\Dependency\Dependency; |
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/** |
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* NullCache does not cache anything reporting success for all methods calls. |
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* |
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* By replacing it with some other cache component, one can quickly switch from |
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* non-caching mode to caching mode. |
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*/ |
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final class NullCache implements CacheInterface |
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{ |
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public function add($key, $value, $ttl = 0, Dependency $dependency = null): bool |
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{ |
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return true; |
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} |
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public function deleteMultiple($keys): bool |
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{ |
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return true; |
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} |
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public function set($key, $value, $ttl = null, Dependency $dependency = null): bool |
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{ |
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return true; |
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} |
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public function get($key, $default = null) |
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{ |
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return $default; |
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} |
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public function getMultiple($keys, $default = null): iterable |
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{ |
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return array_fill_keys($this->iterableToArray($keys), $default); |
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} |
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public function setMultiple($values, $ttl = null, Dependency $dependency = null): bool |
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{ |
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return true; |
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} |
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public function addMultiple(array $values, $ttl = null, Dependency $dependency = null): bool |
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{ |
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return true; |
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} |
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public function getOrSet($key, callable $callable, $ttl = null, Dependency $dependency = null) |
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{ |
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return $callable($this); |
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} |
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public function delete($key): bool |
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{ |
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return true; |
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} |
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public function clear(): bool |
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{ |
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return true; |
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} |
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public function has($key): bool |
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{ |
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return false; |
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} |
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public function enableKeyNormalization(): void |
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{ |
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// do nothing |
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} |
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public function disableKeyNormalization(): void |
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{ |
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// do nothing |
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} |
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public function setKeyPrefix(string $keyPrefix): void |
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{ |
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// do nothing |
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} |
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private function iterableToArray(iterable $iterable): array |
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{ |
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return $iterable instanceof \Traversable ? iterator_to_array($iterable) : (array)$iterable; |
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} |
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} |
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yiisoft /
cache
