memcache = new Memcached(); } else { $this->memcache = new Memcache(); } $this->memcache->addServer('127.0.0.1', 11211); } /** * Read values for a set of keys from cache * * @param array $keys list of keys to fetch * * @return array list of values with the given keys used as indexes * @return boolean true on success, false on failure */ protected function read(array $keys) { $_keys = $lookup = array(); foreach ($keys as $k) { $_k = sha1($k); $_keys[] = $_k; $lookup[ $_k ] = $k; } $_res = array(); $res = $this->memcache->get($_keys); foreach ($res as $k => $v) { $_res[ $lookup[ $k ] ] = $v; } return $_res; } /** * Save values for a set of keys to cache * * @param array $keys list of values to save * @param int $expire expiration time * * @return boolean true on success, false on failure */ protected function write(array $keys, $expire = null) { foreach ($keys as $k => $v) { $k = sha1($k); $this->memcache->set($k, $v, 0, $expire); } return true; } /** * Remove values from cache * * @param array $keys list of keys to delete * * @return boolean true on success, false on failure */ protected function delete(array $keys) { foreach ($keys as $k) { $k = sha1($k); $this->memcache->delete($k); } return true; } /** * Remove *all* values from cache * * @return boolean true on success, false on failure */ protected function purge() { $this->memcache->flush(); } }