Memcache::decrement

memcache_decrement

(PECL memcache >= 0.2.0)

Memcache::decrement -- memcache_decrementDecrement item's value

Descrizione

Memcache::decrement(string $key, int $value = 1): int|false
memcache_decrement(Memcache $memcache, string $key, int $value = 1): int|false

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 subtracted.

Nota:

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

Nota:

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

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

Elenco dei parametri

key

Key of the item do decrement.

value

Decrement the item by value.

Valori restituiti

Returns item's new value on success o false in caso di fallimento.

Esempi

Example #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);
?>

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