= 2.0.0)Memcached::incrementByKey — Increment numeric item's value, stored on a specific server說(shuō)明public Memc">

Memcached::incrementByKey

(PECL memcached >= 2.0.0)

Memcached::incrementByKey — Increment numeric item's value, stored on a specific server

說(shuō)明

public Memcached::incrementByKey(
    string $server_key,
    string $key,
    int $offset = 1,
    int $initial_value = 0,
    int $expiry = 0
): int|false

Memcached::incrementByKey() increments a numeric item's value by the specified offset. If the item's value is not numeric, an error will result. Memcached::incrementByKey() will set the item to the initial_value parameter if the key doesn't exist.

參數(shù)

server_key

本鍵名用于識(shí)別儲(chǔ)存和讀取值的服務(wù)器。沒(méi)有將實(shí)際的鍵名散列到具體的項(xiàng)目，而是在決定與哪一個(gè) memcached 服務(wù)器通信時(shí)將其散列為服務(wù)器鍵名。這使得關(guān)聯(lián)的項(xiàng)目在單一的服務(wù)上被組合起來(lái)以提高多重操作的效率。

key

The key of the item to increment.

offset

The amount by which to increment the item's value.

initial_value

The value to set the item to if it doesn't currently exist.

expiry

The expiry time to set on the item.

返回值

Returns new item's value on success 或者在失敗時(shí)返回 false.

參見(jiàn)