Memcached::__construct
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PHP Manual

# Memcached::decrement

(PECL memcached >= 0.1.0)

Memcached::decrement — Decrement numeric item's value

### Opis

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.

### Parametry

`key`

  The key of the item to decrement.

`offset`

  The amount by which to decrement the item's value.

### Zwracane wartości

Returns item's new value on success lub `FALSE` w przypadku błędu. The Memcached::getResultCode will return `Memcached::RES_NOTFOUND` if the key does not exist.

### Przykłady

Przykład #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'));
?>`

Powyższy przykład wyświetli:

    int(4)
    int(0)

### Zobacz też:

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

Memcached::__construct
Memcached::delete
Memcached
PHP Manual