Memcached
PHP Manual

Memcached::add

(PECL memcached >= 0.1.0)

Memcached::addAdd an item under a new key

Descrição

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.

Parâmetros

key

The key under which to store the value.

value

The value to store.

expiration

The expiration time, defaults to 0. See Expiration Times for more info.

Valor Retornado

Retorna TRUE em caso de sucesso ou FALSE em falhas. The Memcached::getResultCode will return Memcached::RES_NOTSTORED if the key already exists.

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Memcached
PHP Manual