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<?php |
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/** |
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* Pimf |
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* |
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* @copyright Copyright (c) Gjero Krsteski (http://krsteski.de) |
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* @license http://opensource.org/licenses/MIT MIT License |
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*/ |
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namespace Pimf\Cache\Storages; |
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/** |
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* @package Cache_Storages |
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* @author Gjero Krsteski <[email protected]> |
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*/ |
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class File extends Storage |
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{ |
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/** |
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* The path to which the cache files should be written. |
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* |
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* @var string |
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*/ |
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protected $path; |
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/** |
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* @param $path |
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*/ |
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public function __construct($path) |
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{ |
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$this->path = $path; |
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} |
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/** |
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* Determine if an item exists in the cache. |
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* |
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* @param $key |
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* |
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* @return bool |
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*/ |
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public function has($key) |
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{ |
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return file_exists($this->path . $key); |
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} |
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/** |
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* @param string $key |
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* |
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* @return bool|mixed|null |
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*/ |
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View Code Duplication |
protected function retrieve($key) |
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{ |
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if (!$this->has($key)) { |
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return null; |
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} |
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$cache = file_get_contents($this->path . $key); |
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// compare the timestamp to the current time when we read the file. |
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if (time() >= substr($cache, 0, 10)) { |
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$this->forget($key); |
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return null; |
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} |
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return unserialize(substr($cache, 10)); |
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} |
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/** |
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* Write an item to the cache for a given number of minutes. |
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* |
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* <code> |
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* // Put an item in the cache for 15 minutes |
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* Cache::put('name', 'Robin', 15); |
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* </code> |
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* |
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* @param string $key |
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* @param mixed $value |
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* @param int $minutes |
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* |
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* @return int|void |
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*/ |
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public function put($key, $value, $minutes) |
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{ |
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if ((int)$minutes <= 0) { |
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return null; |
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} |
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$value = self::expiration($minutes) . serialize($value); |
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return file_put_contents($this->path . $key, $value, LOCK_EX); |
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} |
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/** |
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* Write an item to the cache for five years. |
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* |
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* @param $key |
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* @param $value |
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* |
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* @return int|void |
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*/ |
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public function forever($key, $value) |
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{ |
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return $this->put($key, $value, 2628000); |
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} |
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/** |
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* Delete an item from the cache. |
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* |
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* @param string $key |
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* |
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* @return bool |
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*/ |
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public function forget($key) |
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{ |
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if ($this->has($key)) { |
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unlink($this->path . $key); |
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clearstatcache(); |
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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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