Spent a long time frustrated with this. If you read the patch notes carefully:
- Make increment/decrement initialize value when it is not available (when using binary protocol).
If you dont have the opt binary protocol set the arguments for initial value just return an error 38 - INVALID ARGUMENTS. This is not documented.
Memcached::increment
(PECL memcached >= 0.1.0)
Memcached::increment — Increment numeric item's value
Beskrivelse
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.
Parametre
-
key -
The key of the item to increment.
-
offset -
The amount by which to increment the item's value.
Returnerings Værdier
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.
Eksempler
Eksempel #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"
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User Contributed Notes 4 notes
Anonymous ¶
11 years ago
Anonymous ¶
10 years ago
If it'll save others some head-scratching, the PECL Memcached extension only supports initializing increment (or decrement) values from 2.0.0b2 onwards - i.e. not the version (1.0.2) that comes out of the box with Ubuntu 12.04.
