(PECL memcached >= 0.1.0)
Memcached::increment — Increment numeric item's value
$key
[, int $offset
= 1
[, int $initial_value
= 0
[, int $expiry
= 0
]]] )
Memcached::increment() increments a numeric item's value
by the specified offset
. If the item's value is not
numeric, an error will result.
Memcached::increment() will set the item to the
initial_value
parameter if the key doesn't exist.
key
The key of the item to increment.
offset
The amount by which to increment the item's value.
initial_value
The value to set the item to if it doesn't currently exist.
expiry
The expiry time to set on the item.
Returns new item's value on successIm Fehlerfall wird FALSE
zurückgegeben..
Beispiel #1 Memcached::increment() example
<?php
$m = new Memcached();
$m->addServer('localhost', 11211);
$m->set('counter', 0);
$m->increment('counter');
$n = $m->increment('counter', 10);
var_dump($n);
$m->set('counter', 'abc');
$n = $m->increment('counter');
// ^ will fail due to item value not being numeric
var_dump($n);
?>
Das oben gezeigte Beispiel erzeugt folgende Ausgabe:
int(11) bool(false)