Memcached
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Memcached::getByKey

(PECL memcached >= 0.1.0)

Memcached::getByKey — Retrieve an item from a specific server

说明

public mixed Memcached::getByKey ( string $server_key , string $key [, callback $cache_cb [, double &$cas_token ]] )

Memcached::getByKey() is functionally equivalent to Memcached::get, except that the free-form server_key can be used to map the key to a specific server.

参数

server_key

The key identifying the server to fetch the item from.

key

The key of the item to fetch.

cache_cb

Read-through caching callback or NULL

cas_token

The variable to store the CAS token in.

返回值

Returns the value stored in the cache or FALSE otherwise. The Memcached::getResultCode will return Memcached::RES_NOTFOUND if the key does not exist.

参见

Memcached
PHP 手册