PHP Manual: Invalidate all items in the cache

Description

public bool Memcached::flush(int $delay = 0)

Memcached::flush invalidates all existing cache items immediately (by default) or after the delay specified. After invalidation none of the items will be returned in response to a retrieval command (unless it's stored again under the same key after Memcached::flush has invalidated the items). The flush does not actually free all the memory taken up by the existing items; that will happen gradually as new items are stored.

Parameters

delay: Number of seconds to wait before invalidating the items.

Return Values

Returns true on success or false on failure. Use Memcached::getResultCode if necessary.

Examples

Example #1 Memcached::flush example

<?php
$m = new Memcached();
$m->addServer('localhost', 11211);

/* flush all items in 10 seconds */
$m->flush(10);
?>