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Memcache::decrement

memcache_decrement

(PECL memcache >= 0.2.0)

Memcache::decrement -- memcache_decrement — Decrement item's value

Beschreibung

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.

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

Hinweis: 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.

Parameter-Liste

key
Key of the item do decrement.
value
Decrement the item by value.

Rückgabewerte

Returns item's new value on successBei einem Fehler wird false zurückgegeben..

Beispiele

Beispiel #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);
?>

Siehe auch