Memcached::increment

(PECL memcached >= 0.1.0)

Memcached::increment — Increment numeric item's value

Description

public int Memcached::increment ( string $key [, int $offset = 1 ] )

Memcached::increment() increments a numeric item's value by the specified offset. If the item's value is not numeric, it is treated as if the value were 0. Memcached::increment() will fail if the item does not exist.

Parameters

key

The key of the item to increment.

offset

The amount by which to increment the item's value.

Return Values

Returns new item's value on success or FALSE on failure. The Memcached::getResultCode() will return Memcached::RES_NOTFOUND if the key does not exist.

Examples

Example #1 Memcached::increment() example

<?php
$m = new Memcached();
$m->addServer('localhost', 11211);

$m->set('counter', 0);
$m->increment('counter');
$m->increment('counter', 10);
var_dump($m->get('counter'));

$m->set('key', 'abc');
$m->increment('counter');
?>

The above example will output:

int(11)
string(1) "1"

See Also

• Memcached::decrement() - Decrement numeric item's value