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<?php
namespace Guzzle\Cache;
/**
* Interface for cache adapters.
*
* Cache adapters allow Guzzle to utilize various frameworks for caching HTTP responses.
*
* @link http://www.doctrine-project.org/ Inspired by Doctrine 2
*/
interface CacheAdapterInterface
{
/**
* Test if an entry exists in the cache.
*
* @param string $id cache id The cache id of the entry to check for.
* @param array $options Array of cache adapter options
*
* @return bool Returns TRUE if a cache entry exists for the given cache id, FALSE otherwise.
*/
public function contains($id, array $options = null);
/**
* Deletes a cache entry.
*
* @param string $id cache id
* @param array $options Array of cache adapter options
*
* @return bool TRUE on success, FALSE on failure
*/
public function delete($id, array $options = null);
/**
* Fetches an entry from the cache.
*
* @param string $id cache id The id of the cache entry to fetch.
* @param array $options Array of cache adapter options
*
* @return string The cached data or FALSE, if no cache entry exists for the given id.
*/
public function fetch($id, array $options = null);
/**
* Puts data into the cache.
*
* @param string $id The cache id
* @param string $data The cache entry/data
* @param int|bool $lifeTime The lifetime. If != false, sets a specific lifetime for this cache entry
* @param array $options Array of cache adapter options
*
* @return bool TRUE if the entry was successfully stored in the cache, FALSE otherwise.
*/
public function save($id, $data, $lifeTime = false, array $options = null);
}