(PECL apcu >= 4.0.0)
apcu_dec — Decrease a stored number
$key
[, int $step
= 1
[, bool &$success
[, int $ttl
= 0
]]] ) : intDecreases a stored integer value.
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).
Returns the current value of key
's value on success,
lub FALSE
w przypadku niepowodzenia
Wersja | Opis |
---|---|
5.1.12 |
The ttl parameter has been added.
|
Przykład #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);
?>
Powyższy przykład wyświetli coś podobnego do:
Let's do something with success 42 41 31 21 bool(true) Now, let's fail bool(false) bool(false)