(PECL memcached >= 2.0.0)
Memcached::deleteMultiByKey — Delete multiple items from a specific server
$server_key, array $keys, int $time = 0): bool
Memcached::deleteMultiByKey() is functionally equivalent to
Memcached::deleteMulti(), except that the free-form
server_key can be used to map the
keys to a specific server.
server_key本鍵名用于識別儲存和讀取值的服務(wù)器。沒(méi)有將實(shí)際的鍵名散列到具體的項目，而是在決定與哪一個(gè) memcached 服務(wù)器通信時(shí)將其散列為服務(wù)器鍵名。這使得關(guān)聯(lián)的項目在單一的服務(wù)上被組合起來(lái)以提高多重操作的效率。
keysThe keys to be deleted.
timeThe amount of time the server will wait to delete the items.
成功時(shí)返回 true， 或者在失敗時(shí)返回 false。
The Memcached::getResultCode() will return
Memcached::RES_NOTFOUND if the key does not exist.