apcu_dec

    (PECL apcu >= 4.0.0)

    apcu_dec — Decrease a stored number

    Опис

    function 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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