apcu_dec

(PECL apcu >= 4.0.0)

apcu_decDecrease a stored number

Descrizione

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

Decreases a stored integer value.

Elenco dei parametri

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).

Valori restituiti

Returns the current value of key's value on success, o false in caso di fallimento

Esempi

Example #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_EOLPHP_EOL;

apcu_store('astring''foo');

$ret apcu_dec('astring'1$fail);

var_dump($ret);
var_dump($fail);
?>

Il precedente esempio visualizzerĂ  qualcosa simile a:

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

bool(false)
bool(false)

Vedere anche:

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