apcu_dec

(PECL apcu >= 4.0.0)

apcu_decDecrease a stored number

Description

apcu_dec ( string $key [, int $step = 1 [, bool &$success [, int $ttl = 0 ]]] ) : int

Decreases a stored integer value.

Liste de paramètres

key

The key of the value being decreased.

step

The step, or value to decrease.

success

Optionally pass the success or fail boolean value to this referenced variable.

ttl

TTL to use if the operation inserts a new value (rather than decrementing an existing one).

Valeurs de retour

Returns the current value of key's value on success, ou FALSE si une erreur survient

Historique

Version Description
5.1.12 The ttl parameter has been added.

Exemples

Exemple #1 apcu_dec() example

<?php
echo "Let's do something with success"PHP_EOL;

apcu_store('anumber'42);

echo 
apcu_fetch('anumber'), PHP_EOL;

echo 
apcu_dec('anumber'), PHP_EOL;
echo 
apcu_dec('anumber'10), PHP_EOL;
echo 
apcu_dec('anumber'10$success), PHP_EOL;

var_dump($success);

echo 
"Now, let's fail"PHP_EOLPHP_EOL;

apcu_store('astring''foo');

$ret apcu_dec('astring'1$fail);

var_dump($ret);
var_dump($fail);
?>

L'exemple ci-dessus va afficher quelque chose de similaire à :

Let's do something with success
42
41
31
21
bool(true)
Now, let's fail

bool(false)
bool(false)

Voir aussi