Memcached::decrement

(PECL memcached >= 0.1.0)

Memcached::decrement — Decrement numeric item's value

Описание

public int Memcached::decrement ( string $key [, int $offset = 1 ] )

Memcached::decrement() decrements a numeric item's value by the specified offset. If the item's value is not numeric, it is treated as if the value were 0. If the operation would decrease the value below 0, the new value will be 0. Memcached::decrement() will fail if the item does not exist.

Список параметров

key: The key of the item to decrement.
offset: The amount by which to decrement the item's value.

Возвращаемые значения

Returns item's new value on success или FALSE в случае возникновения ошибки. The Memcached::getResultCode() will return Memcached::RES_NOTFOUND if the key does not exist.

Примеры

Пример #1 Memcached::decrement() example


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

$m->set('counter', 5);
$m->decrement('counter');
var_dump($m->get('counter'));

$m->decrement('counter', 10);
var_dump($m->get('counter'));
?>

Результат выполнения данного примера:

int(4)
int(0)

Смотрите также

Memcached::increment() - Increment numeric item's value