Note that $success is set to false if no cached entry with given key exists.
So "failure" tells you if the cache was hit or not.
(PECL apcu >= 4.0.0)
apcu_fetch — Fetch a stored variable from the cache
key
The key used to store the value (with
apcu_store()). If an array is passed then each
element is fetched and returned.
success
The stored variable or array of variables on success; false on failure
| 版本 | 说明 |
|---|---|
| PECL apcu 3.0.17 |
The success parameter was added.
|
示例 #1 A apcu_fetch() example
<?php
$bar = 'BAR';
apcu_store('foo', $bar);
var_dump(apcu_fetch('foo'));
?>以上示例会输出：
string(3) "BAR"
Note that $success is set to false if no cached entry with given key exists.
So "failure" tells you if the cache was hit or not.