(PECL memcached >= 0.1.0)
Memcached::increment — Increment numeric item's value
$key
[, int $offset = 1
[, int $initial_value = 0
[, int $expiry = 0
]]] ) : int|false
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.
keyThe key of the item to increment.
offsetThe amount by which to increment the item's value.
initial_valueThe value to set the item to if it doesn't currently exist.
expiryThe 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)