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Memcached::touchByKey

(PECL memcached >= 2.0.0)

Memcached::touchByKey — Set a new expiration on an item on a specific server

说明

public Memcached::touchByKey(string $server_key, string $key, int $expiration = 0): bool

Memcached::touchByKey() is functionally equivalent to Memcached::touch(), except that the free-form server_key can be used to map the key to a specific server.

参数

server_key

本键名用于识别储存和读取值的服务器。没有将实际的键名散列到具体的项目，而是在决定与哪一个 memcached 服务器通信时将其散列为服务器键名。这使得关联的项目在单一的服务上被组合起来以提高多重操作的效率。

key

用于存储值的键名。

expiration

到期时间，默认为 0。 更多信息请参见到期时间。

返回值

成功时返回 true， 或者在失败时返回 false。 如需要则使用 Memcached::getResultCode()。

参见