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Memcache::increment

(PECL memcache:0.2-2.1.2)

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.

Note: 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

Example#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);

?>

参见

  • Memcache::decrement()
  • Memcache::replace()


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