php 한글 메뉴얼 도움말 검색 사이트 Decrease a stored number [function.apc-dec]

설명

int apc_dec ( string $key [, int $step = 1 [, bool &$success ]] )

Decreases a stored integer value.

인수

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.

반환값

Returns the current value of key's value on success, 실패 시 FALSE를 반환합니다

예제

Example #1 apc_dec() example


<?php
echo "Let's do something with success", PHP_EOL;

apc_store('anumber', 42);

echo apc_fetch('anumber'), PHP_EOL;

echo apc_dec('anumber'), PHP_EOL;
echo apc_dec('anumber', 10), PHP_EOL;
echo apc_dec('anumber', 10, $success), PHP_EOL;

var_dump($success);

echo "Now, let's fail", PHP_EOL, PHP_EOL;

apc_store('astring', 'foo');

$ret = apc_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)

참고

apc_inc() - Increase a stored number