(PECL apcu >= 4.0.0)
apcu_dec — Decrease a stored number
$key
[, int $step
= 1
[, bool &$success
]] )Decreases 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.
Returns the current value of key
's value on success,
실패 시 FALSE
를 반환합니다
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_EOL, PHP_EOL;
apcu_store('astring', 'foo');
$ret = apcu_dec('astring', 1, $fail);
var_dump($ret);
var_dump($fail);
?>
위 예제의 출력 예시:
Let's do something with success 42 41 31 21 bool(true) Now, let's fail bool(false) bool(false)