* @param string $group The group the key is in.
* @return false|int False on failure, the item's new value on success.
*/
function decr( $key, $offset = 1, $group = 'default' ) {
* @param string $group The group the key is in.
* @return false|int False on failure, the item's new value on success.
*/
function decr( $key, $offset = 1, $group = 'default' ) {