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() { return $this->memcache->flush(); } }