(PECL apcu >= 4.0.0)
apcu_dec — Decrease a stored number
Decreases a stored integuer 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.
ttl
TTL to use if the operation insers 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)