Replace value of the existing item
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    Memcache::replace

    (PECL memcache >= 0.2.0)

    Memcache::replace — Replace value of the existing item

    Description

    Memcache::replace(
        string $key,
        mixed $var,
        int $flag = ?,
        int $expire = ?
    ): bool

    Memcache::replace() should be used to replace value of existing item with key. In case if item with such key doesn't exists, Memcache::replace() returns false. For the rest Memcache::replace() behaves similarly to Memcache::set(). Also you can use memcache_replace() function.

    Parameters

    key

    The key that will be associated with the item.

    var

    The variable to store. Strings and integers are stored as is, other types are stored serialized.

    flag

    Use MEMCACHE_COMPRESSED to store the item compressed (uses zlib).

    expire

    Expiration time of the item. If it's equal to zero, the item will never expire. You can also use Unix timestamp or a number of seconds starting from current time, but in the latter case the number of seconds may not exceed 2592000 (30 days).

    Return Values

    Returns true on success or false on failure.

    Examples

    Example #1 Memcache::replace() example

    <?php$memcache_obj = memcache_connect('memcache_host', 11211);/* procedural API */memcache_replace($memcache_obj, "test_key", "some variable", false, 30);/* OO API */$memcache_obj->replace("test_key", "some variable", false, 30);?>

    See Also