(PECL apcu >= 4.0.0)
apcu_delete — Removes a stored variable from the cache
key
A key used to store the value as a
string for a single key,
or as an array of strings for several keys,
or as an APCUIterator object.
成功时返回 TRUE， 或者在失败时返回 FALSE。
Example #1 A apcu_delete() example
<?php
$bar = 'BAR';
apcu_store('foo', $bar);
apcu_delete('foo');
// this is obviously useless in this form
// Alternatively delete multiple keys.
apcu_delete(['foo', 'bar', 'baz']);
// Or use an Iterator with a regular expression.
apcu_delete(new APCUIterator('#^myprefix_#'));
?>