(PECL memcached >= 0.1.0)
Memcached::increment — Increment numeric item's value
$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.
keyThe key of the item to increment.
offsetThe amount by which to increment the item's value.
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.
Example #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"