Memcached::add

    (PECL memcached >= 0.1.0)

    Memcached::add — Añade un nuevo elemento bajo una nueva clave

    Descripción

    public Memcached::add(string $key, mixed $value, int $expiration = 0): bool

    Memcached::add() es similar a Memcached::set(), pero la operación falla si la clave key ya existe.

    Parámetros

    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.

    Valores devueltos

    Esta función retorna true en caso de éxito o false si ocurre un error. El método Memcached::getResultCode() devuelve la constante Memcached::RES_NOTSTORED si la clave ya existe.

    Ver también

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    User Contributed Notes 1 note

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    ilya dot chase at yandex dot ru
    6 years ago
    Note that this operation is atomic, means that it's safe from race condition operation (since memcached is running in single process). You can use this method for locks and can be sure that two requests will not get "true" simultaneously using this method.
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