If you are using the PHP memcached class (the one with the
d on the end, not
memcache) then yes, you can open a persistent connection.
You can pass a persistent ID to the constructor which will open a persistent connection and subsequent instances that use the same persistent ID will use that connection.
$memcached = new Memcached('method_name_or_persistent_identifier'); $memcached->addServer(...); // use it
Hope that helps.
Memcached::__construct() for more details.