update : 2015.11.03
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Memcached::decrementByKey(PECL memcached >= 2.0.0) Memcached::decrementByKey — Decrement numeric item's value, stored on a specific server 설명
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 인수
반환값
Returns item's new value on success실패 시 참고
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