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    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|false

    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

    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 produzirá algo semelhante a:

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

bool(false)
bool(false)

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