apc_dec

(PECL apc >= 3.1.1)

apc_decDecrease a stored number

Opis

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

Decreases a stored integer value.

Parametry

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.

Zwracane wartości

Returns the current value of key's value on success, lub FALSE w przypadku niepowodzenia

Przykłady

Przykład #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_EOLPHP_EOL;

apc_store('astring''foo');

$ret apc_dec('astring'1$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)

Zobacz też:

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User Contributed Notes 1 note

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0
elfi47
11 years ago
check for errors with === FALSE or === 0

dec() will increase to 3, 2, 1, 0, -1, -2, -3....

if you check with == FALSE you will get an wrong FALSE result if the variable is on 0.
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