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<?php |
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namespace voku\cache; |
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/** |
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* AdapterArray: simple array-cache adapter |
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* |
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* @package voku\cache |
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*/ |
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class AdapterArray implements iAdapter |
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{ |
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/** |
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* @var array |
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*/ |
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private static $values = array(); |
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/** |
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* @var array |
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*/ |
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private static $expired = array(); |
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/** |
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* get cached-item by key |
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* |
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* @param String $key |
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* |
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* @return mixed |
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*/ |
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public function get($key) |
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{ |
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return $this->exists($key) ? self::$values[$key] : null; |
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} |
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/** |
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* remove expired |
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* |
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* @param string $key |
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* |
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* @return boolean |
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*/ |
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private function removeExpired($key) |
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{ |
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if ( |
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!isset(self::$expired[$key]) |
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|| |
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!isset(self::$values[$key]) |
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) { |
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return false; |
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} |
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list($time, $ttl) = self::$expired[$key]; |
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if (time() > ($time + $ttl)) { |
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unset(self::$values[$key]); |
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} |
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if (!isset(self::$values[$key])) { |
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unset(self::$expired[$key]); |
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} |
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return true; |
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} |
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/** |
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* check if cached-item exists |
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* |
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* @param string $key |
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* |
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* @return bool |
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*/ |
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public function exists($key) |
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{ |
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$this->removeExpired($key); |
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return isset(self::$values[$key]); |
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} |
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/** |
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* set cache-item by key => value |
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* |
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* @param string $key |
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* @param mixed $value |
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* |
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* @return mixed|void |
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*/ |
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public function set($key, $value) |
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{ |
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self::$values[$key] = $value; |
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return true; |
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} |
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/** |
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* set cache-item by key => value + ttl |
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* |
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* @param string $key |
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* @param mixed $value |
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* @param int $ttl |
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* |
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* @return mixed|void |
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*/ |
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public function setExpired($key, $value, $ttl) |
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{ |
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self::$values[$key] = $value; |
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self::$expired[$key] = array(time(), $ttl); |
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return true; |
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} |
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/** |
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* remove cache-item by key |
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* |
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* @param string $key |
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* |
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* @return bool |
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*/ |
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public function remove($key) |
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{ |
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$this->removeExpired($key); |
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if (isset(self::$values[$key])) { |
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unset(self::$values[$key]); |
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return true; |
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} |
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return false; |
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} |
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/** |
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* remove cache |
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* |
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* @return true |
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*/ |
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public function removeAll() |
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{ |
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self::$values = array(); |
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self::$expired = array(); |
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return true; |
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} |
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/** |
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* check if cache is installed |
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* |
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* @return true |
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*/ |
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public function installed() |
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{ |
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return true; |
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} |
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154
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} |
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voku /
simple-cache
