apcu_dec

(PECL apcu >= 4.0.0)

apcu_dec — Decrease a stored number

Descrição

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

Decreases a stored integer value.

Parâmetros

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).

Valor Retornado

Returns the current value of key's value on success, ou FALSE em caso de falha

Changelog

Versão Descrição
5.1.12 The ttl parameter has been added.

Exemplos

Exemplo #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);
?>

O exemplo acima irá imprimir algo similar à:

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

bool(false)
bool(false)

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