apcu_dec

    (PECL apcu >= 4.0.0)

    apcu_dec — Decrease a stored number

    Опис

    apcu_dec(
        string $key,
        int $step = 1,
        bool &$success = ?,
        int $ttl = 0
    ): int|false

    Decreases a stored integer value.

    Параметри

    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).

    Значення, що повертаються

    Returns the current value of key's value on success, або false в разі помилки

    Приклади

    Приклад #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);
    ?>

    Поданий вище приклад виведе щось схоже на:

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

bool(false)
bool(false)

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