Memcached::decrement

(PECL memcached >= 0.1.0)

Memcached::decrement — Decrement numeric item's value

Descrierea

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.

Parametri

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

Valorile întoarse

Returns item's new value on success sau FALSE în cazul eșecului. The Memcached::getResultCode() will return Memcached::RES_NOTFOUND if the key does not exist.

Exemple

Example #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'));
?>

Exemplul de mai sus va afișa:

int(4)
int(0)

Vedeți de asemenea

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

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