Memcached::add

(PECL memcached >= 0.1.0)

Memcached::add — Add an item under a new key

public bool Memcached::add ( string $key , mixed $value [, int $expiration ] )

Memcached::add() is similar to Memcached::set, but the operation fails if the key already exists on the server.

성공할 경우 TRUE를, 실패할 경우 FALSE를 반환합니다. The Memcached::getResultCode will return Memcached::RES_NOTSTORED if the key already exists.