apcu_dec

(PECL apcu >= 4.0.0)

apcu_decDecrease a stored number

Descrierea

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

Decreases a stored integer value.

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).

Valorile întoarse

Returns the current value of key's value on success, sau false în cazul eșecului

Istoricul schimbărilor

Versiune Descriere
5.1.12 The ttl parameter has been added.

Exemple

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);
?>

Exemplul de mai sus va afișa ceva similar cu:

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

bool(false)
bool(false)

A se vedea și

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