(PECL apc:3.0.0-3.0.9)
apc_delete — Removes a stored variable from the cache
The key used to store the value (with apc_store()).
如果成功则返回 TRUE，失败则返回 FALSE。
Example#1 A apc_delete() example
<?php$bar = 'BAR';apc_store('foo', $bar);apc_delete('foo');// this is obviously useless in this form?>