Memcached::prependByKey

    (PECL memcached >= 0.1.0)

    Memcached::prependByKey — Prepend data to an existing item on a specific server

    Description

    public Memcached::prependByKey(string $server_key, string $key, string $value): ?bool

    Memcached::prependByKey() is functionally equivalent to Memcached::prepend(), except that the free-form server_key can be used to map the key to a specific server.

    Parameters

    server_key

    The key identifying the server to store the value on or retrieve it from. Instead of hashing on the actual key for the item, we hash on the server key when deciding which memcached server to talk to. This allows related items to be grouped together on a single server for efficiency with multi operations.

    key

    The key of the item to prepend the data to.

    value

    The string to prepend.

    Return Values

    Returns true on success or false on failure. Returns null when compression is on.

    Errors/Exceptions

    Returns null and raises an E_WARNING when compression is enabled.

    See Also

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