Decrease a stored number

Description

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

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