(PECL apcu >= 4.0.0)
apcu_dec — Decrease a stored number
Decreases a stored integer value.
keyThe key of the value being decreased.
stepThe step, or value to decrease.
successOptionally pass the success or fail boolean value to this referenced variable.
ttlTTL 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,
or false on failure
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);
?>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)