Memcache::increment
(no version information, might be only in CVS)
Memcache::increment -- Increment item's value
说明
int
Memcache::increment ( string key [, int value] )
Memcache::increment() increments value of the item on
the specified value. If item with key
key was not numeric and cannot be converted to
number, it will change it's value to value.
Memcache::increment() does not
create an item if it didn't exist.
注意:
Do not use Memcache::increment() with item, which was
stored compressed, because consequent call to
Memcache::get() will fail.
Also you can use
memcache_increment() function.
参数
key
Key of the item to increment.
value
Increment the item by value. Optional and defaults to 1.
返回值
Returns new item's value on success or FALSE on failure.
范例
例 1. Memcache::increment() example
<?php
/* procedural API */
$memcache_obj = memcache_connect('memcache_host', 11211);
/* increment counter by 2 */
$current_value = memcache_increment($memcache_obj, 'counter', 2);
/* OO API */
$memcache_obj = new Memcache;
$memcache_obj->connect('memcache_host', 11211);
/* increment counter by 3 */
$current_value = $memcache_obj->increment('counter', 3);
?>
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参见
| Memcache::decrement() |
| Memcache::replace() |