apcu_dec

(PECL apcu >= 4.0.0)

Decrease a stored number

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

Decreases a stored integer value.

Parameters:

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:

Returns the current value of key's value on success, or FALSE on failure

Examples:

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);
?>

The above example will output something similar to:

Let's do something with success
42
41
31
21
bool(true)

Now, let's fail
bool(false)
bool(false)