Swoole\Table::decr (PECL swoole >= 1.9.0)Swoole\Table::decr — Decrement the value in the Swoole table by $key and $column 说明 public Swoole\Table::decr(string $key, string $column, int $decrby = ?): int 参数 key Key of the data. column Specify the column name. decrby Decrement value. 返回值