$data * @param string $group * @param int $expire * @return array */ public function add_multiple(array $data, string $group = 'default', int $expire = 0): array; /** * Set given groups as global. * * @param array $groups * @return void */ public function add_global_groups(array $groups); /** * Set given groups as non-persistent. * * @param array $groups * @return void */ public function add_non_persistent_groups(array $groups); /** * Set given groups as non-prefetchable. * * @param array $groups * @return void */ public function add_non_prefetchable_groups(array $groups); /** * Closes the cache. * * @return bool */ public function close(): bool; /** * Decrements numeric cache item's value. * * @param int|string $key * @param int $offset * @param string $group * @return int|false */ public function decr($key, int $offset = 1, string $group = 'default'); /** * Removes the cache contents matching key and group. * * @param int|string $key * @param string $group * @return bool */ public function delete($key, string $group = 'default'): bool; /** * Deletes multiple values from the cache in one call. * * @param array $keys * @param string $group * @return array */ public function delete_multiple(array $keys, string $group = 'default'): array; /** * Removes all cache items. * * @return bool */ public function flush(): bool; /** * Removes all cache items from the in-memory runtime cache. * * @return bool */ public function flush_runtime(): bool; /** * Removes all cache items given group. * * @param string $group * @return bool */ public function flush_group(string $group): bool; /** * Retrieves the cache contents from the cache by key and group. * * @param int|string $key * @param string $group * @param bool $force * @param bool &$found * @return mixed|false */ public function get($key, string $group = 'default', bool $force = false, &$found = null); /** * Retrieves multiple values from the cache in one call. * * @param array $keys * @param string $group * @param bool $force * @return array */ public function get_multiple(array $keys, string $group = 'default', bool $force = false); /** * Whether the key exists in the cache. * * @param int|string $key * @param string $group * @return bool */ public function has($key, string $group = 'default'): bool; /** * Increment numeric cache item's value. * * @param int|string $key * @param int $offset * @param string $group * @return int|false */ public function incr($key, int $offset = 1, string $group = 'default'); /** * Replaces the contents of the cache with new data. * * @param int|string $key * @param mixed $data * @param string $group * @param int $expire * @return bool */ public function replace($key, $data, string $group = 'default', int $expire = 0): bool; /** * Saves the data to the cache. * * @param int|string $key * @param mixed $data * @param string $group * @param int $expire * @return bool */ public function set($key, $data, string $group = 'default', int $expire = 0): bool; /** * Sets multiple values to the cache in one call. * * @param array $data * @param string $group * @param int $expire * @return array */ public function set_multiple(array $data, string $group = 'default', int $expire = 0): array; /** * Switches the internal blog ID. * * @param int $blog_id * @return bool */ public function switch_to_blog(int $blog_id): bool; }