ConFoo: Call for paper is now Open

Memcached::decrement

(PECL memcached >= 0.1.0)

Memcached::decrementDecrement numeric item's value

Description

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

Memcached::decrement() decrements 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. If the operation would decrease the value below 0, the new value will be 0. Memcached::decrement() will fail if the item does not exist.

Parameters

key

The key of the item to decrement.

offset

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

Return Values

Returns item's new 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::decrement() example

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

$m->set('counter'5);
$m->decrement('counter');
var_dump($m->get('counter'));

$m->decrement('counter'10);
var_dump($m->get('counter'));
?>

The above example will output:

int(4)
int(0)

See Also

add a note add a note

User Contributed Notes 3 notes

up
5
Pramod Patil
9 days ago
decrement will not change TTL of the stored key/value.
up
1
Pramod Patil
5 days ago
Found possible bug :
decrement fails and returns -1  when memcached::OPT_BINARY_PROTOCOL is set to true.

tested on PECL Memcached 2.1.0 and libmemcached version 1.0.8
up
1
jbaginski
1 year ago
PECL memcached < 0.2.0

public int Memcached::decrement ( string $key [, int $offset = 1 ] )
To Top