Memcached::getByKey
Retrieve an item from a specific server
Description
public mixed Memcached::getByKey(
string $server_key
,
string $key
,
callablenull $cache_cb
= null
,
int $get_flags
= 0
)
Parameters
-
server_key
-
The key identifying the server to store the value on or retrieve it from. Instead of hashing on the actual key for the item, we hash on the server key when deciding which memcached server to talk to. This allows related items to be grouped together on a single server for efficiency with multi operations.
-
key
-
The key of the item to fetch.
-
cache_cb
-
Read-through caching callback or null
-
get_flags
-
Flags to control the returned result. When value of Memcached::GET_EXTENDED
is given will return the CAS token.
Return Values
Returns the value stored in the cache or false
otherwise.
The Memcached::getResultCode will return
Memcached::RES_NOTFOUND
if the key does not exist.
See Also
- Memcached::get
- Memcached::getMulti
- Memcached::getDelayed