Podręcznik PHP
Poprzedni |  | Następny

# Memcache::decrement

(no version information, might be only in CVS)

Memcache::decrement -- Decrement item's value

## Description

int Memcache::decrement ( string key [, int value] )

Memcache::decrement() decrements value of the item by value. Similarly to Memcache::increment(), current value of the item is being converted to numerical and after that value is substracted.

Parameter value is optional. It's default is 1.

> Notatka: New item's value will not be less than zero.

> Notatka: Do not use Memcache::decrement() with item, which was stored compressed, because consequent call to Memcache::get() will fail.

Also you can use memcache_decrement() function. See example below.

Przykład 1. Memcache::decrement() example

`<?php /* procedural API */ $memcache_obj = memcache_connect('memcache_host', 11211); /* decrement item by 2 */ $new_value = memcache_decrement($memcache_obj, 'test_item', 2); /* OO API */ $memcache_obj = new Memcache; $memcache_obj->connect('memcache_host', 11211); /* decrement item by 3 */ $new_value = $memcache_obj->decrement('test_item', 3); ?>`

Memcache::decrement() does not create an item if it didn't exist.

Memcache::decrement() returns item's new value on success or `FALSE` on failure.

See also Memcache::increment(), Memcache::replace().

Poprzedni | Spis treści | Następny
memcache_debug | Początek rozdziału | Memcache::delete