Memcache::decrement
(no version information, might be only in CVS)
Memcache::decrement -- Decrement item's value
Описание
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.
Замечание:
New item's value will not be less than zero.
Замечание:
Do not use Memcache::decrement() with item, which was
stored compressed, because consequent call to
Memcache::get() will fail.
create an item if it didn't exist.
Also you can use
memcache_decrement() function.
Список параметров
key
Key of the item do decrement.
value
Decrement the item by value. Optional and defaults to 1.
Возвращаемые значения
Returns item's new value on success or FALSE on failure.
Примеры
Пример 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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Смотрите также
| Memcache::increment() |
| Memcache::replace() |