PHP:Memcached::decrementByKey()的用法_Memcached类

编辑：rootadmin

Memcached::decrementByKey

推荐整理分享PHP:Memcached::decrementByKey()的用法_Memcached类，希望有所帮助，仅作参考，欢迎阅读内容。

文章相关热门搜索词:,内容如对您有帮助，希望把文章链接给更多的朋友！

(PECL memcached >= 2.0.0)

Memcached::decrementByKey — Decrement numeric item&#;s value, stored on a specific server

说明 public int Memcached::decrementByKey ( string $server_key , string $key [, int $offset = 1 [, int $initial_value = 0 [, int $expiry = 0 ]]] )

Memcached::decrementByKey() decrements a numeric item&#;s value by the specified offset. If the item&#;s value is not numeric, an error will result. If the operation would decrease the value below 0, the new value will be 0. Memcached::decrementByKey() will set the item to the initial_value parameter if the key doesn&#;t exist.

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

PHP:Memcached::decrementByKey()的用法_Memcached类

The key of the item to decrement.

offset

The amount by which to decrement 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 item&#;s new value on success 或者在失败时返回 FALSE.

参见

Memcached::decrement() - 减小数值元素的值 Memcached::increment() - 增加数值元素的值 Memcached::incrementByKey() - Increment numeric item's value, stored on a specific server

PHP:Memcached::deleteMultiByKey()的用法_Memcached类 Memcached::deleteMultiByKey(PECLmemcached=2.0.0)Memcached::deleteMultiByKeyDeletemultipleitemsfromaspecificserver说明publicboolMemcached::deleteMultiByKey(string$server_key,array$keys[,int$time=0])M

PHP:Memcached::setOption()的用法_Memcached类 Memcached::setOption(PECLmemcached=0.1.0)Memcached::setOption设置一个memcached选项说明publicboolMemcached::setOption(int$option,mixed$value)这个方法用来设置Memcachedoption的值。一

PHP:Memcached::setMulti()的用法_Memcached类 Memcached::setMulti(PECLmemcached=0.1.0)Memcached::setMulti存储多个元素说明publicboolMemcached::setMulti(array$items[,int$expiration])Memcached::setMulti()类似于Memcached::set()，但是使

标签: PHP:Memcached::decrementByKey()的用法_Memcached类

本文链接地址:https://www.jiuchutong.com/biancheng/280096.html 转载请保留说明！

上一篇：PHP:Memcached::deleteMulti()的用法_Memcached类

下一篇：PHP:Memcached::deleteMultiByKey()的用法_Memcached类