incr 命令/方法/函数

Description

Increment the number stored at key by one. If the second argument is filled, it will be used as the integer value of the increment.

对指定的KEY的值自增1。如何填写了第二个参数,将把第二个参数自增给KEY的值。


Parameters

key

value: value that will be added to key (only for incrBy)


Return value

INT the new value

返回新的INT数值


Examples

$redis->incr('key1'); /* key1 didn't exists, set to 0 before the increment  如果key1不存在,在自增之前的默认值为0 */

                      /* and now has the value 1 执行incr后,现在为1 */


$redis->incr('key1'); /* 2 */

$redis->incr('key1'); /* 3 */