(PECL memcache >= 0.2.0)
memcache サーバーへの接続をあらわします。
$host
,$port
= 11211,$persistent
= ?,$weight
= ?,$timeout
= ?,$retry_interval
= ?,$status
= ?,$failure_callback
= ?,$timeoutms
= ?$host
,$port
= 11211,$timeout
= ?,$retry_interval
= false
,$status
= ?,$failure_callback
= ?