Memcached::increment
(PECL memcached >= 0.1.0)
Memcached::increment — Increment numeric item's value
Description
public int Memcached::increment ( string $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.
Parameters
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.
Return Values
Returns new item's value on success or FALSE on failure.
Examples
Example #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);
?>The above example will output:
int(11)
bool(false)See Also
- Memcached::decrement() - Decrement numeric item's value
- Memcached::decrementByKey() - Decrement numeric item's value, stored on a specific server
- Memcached::incrementByKey() - Increment numeric item's value, stored on a specific server
← Memcached::getVersion
Memcached::incrementByKey →
? 1997–2017 The PHP Documentation GroupLicensed under the Creative Commons Attribution License v3.0 or later.
本文档系腾讯云开发者社区成员共同维护，如有问题请联系 cloudcommunity@tencent.com
