Nu-Coder Manual

PhpExpress Manual

PHP Joomla
Development

Memcached::quit	Memcached::replaceByKey

Memcached	Last updated: Mon, 26 Oct 2026

Memcached::replace

(PECL memcached >= 0.1.0)

Memcached::replace — Replace the item under an existing key

Description

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

Memcached::replace() is similar to Memcached::set(), but the operation fails if the key does not exist on the server.

Parameters

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.

Return Values

Returns true on success or false on failure. The Memcached::getResultCode() will return Memcached::RES_NOTSTORED if the key does not exist.

See Also

Memcached::replaceByKey() - Replace the item under an existing key on a specific server
Memcached::set() - Store an item
Memcached::add() - Add an item under a new key

Memcached::quit	Memcached::replaceByKey

Memcached	Last updated: Mon, 26 Oct 2026