update : 2015.11.03
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Increment numeric item's value
Memcached
PHP Manual

Memcached::increment

(PECL memcached >= 0.1.0)

Memcached::increment — Increment numeric item's value

설명

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

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

인수

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.

반환값

Returns new item's value on success실패 시 FALSE를 반환합니다.

예제

Example #1 Memcached::increment() example

<?php
$m = new Memcached();
$m->addServer('localhost', 11211);

$m->set('counter', 0);
$m->increment('counter');
$n = $m->increment('counter', 10);
var_dump($n);

$m->set('counter', 'abc');
$n = $m->increment('counter');
// ^ will fail due to item value not being numeric
var_dump($n);
?>

위 예제의 출력:

int(11)
bool(false)

참고

Memcached
PHP Manual