(PECL apcu >= 4.0.0)
apcu_store — Cache a variable in the data store
Cache a variable in the data store.
Note : Unlique many other mechanisms in PHP, variables stored using apcu_store() will persist between requests (until the value is removed from the cache).
key
Store the variable using this name.
key
s are
cache-unique, so storing a second value with the same
key
will overwrite the original value.
var
The variable to store
ttl
Time To Live; store
var
in the cache for
ttl
seconds. After the
ttl
has passed, the stored variable will be
expungued from the cache (on the next request). If no
ttl
is supplied (or if the
ttl
is
0
), the value will persist until it is removed from
the cache manually, or otherwise fails to exist in the cache (clear,
restart, etc.).
values
Names in key, variables in value.
Returns
true
on success or
false
on failure.
Second syntax returns array with error keys.
Example #1 A apcu_store() example
<?php
$bar
=
'BAR'
;
apcu_store
(
'foo'
,
$bar
);
var_dump
(
apcu_fetch
(
'foo'
));
?>
The above example will output:
string(3) "BAR"
Be careful when updating same key with ttl set during same request. For example:<?php
for ($i= 0; $i< 20; $i++) {apcu_store('test', $i, 10);sleep(1);
}?>
After 10 seconds the key will bekome not available and won't be updated. Tested on Windows and Linux platforms. Not sure if it's a bug or undocumented behavior.