(PECL memcached >= 0.1.0)
Memcached::increment — Increment numeric item's value
$key
,$offset
= 1,$initial_value
= 0,$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 success або false
в разі помилки.
Приклад #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);
?>
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