Decrease a stored number

# apcu_dec

(PECL apcu >= 4.0.0)

apcu_dec — Decrease a stored number

### Description

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

### Valeurs de retour

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

### 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_EOL, PHP_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

- apcu_inc() - Increase a stored number