PHP-Handbuch: Add an item to the server

Beschreibung

bool Memcache::add ( string $key , mixed $var [, int $flag [, int $expire ]] )

Memcache::add stores variable var with key only if such key doesn't exist at the server yet. Also you can use memcache_add function.

Parameter-Liste

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).

Rückgabewerte

Gibt bei Erfolg TRUE zurück. Im Fehlerfall wird FALSE zurückgegeben. Returns FALSE if such key already exist. For the rest Memcache::add behaves similarly to Memcache::set.

Beispiele

Beispiel #1 Memcache::add example


<?php

$memcache_obj = memcache_connect("localhost", 11211);

/* procedural API */
memcache_add($memcache_obj, 'var_key', 'test variable', false, 30);

/* OO API */
$memcache_obj->add('var_key', 'test variable', false, 30);

?>

Siehe auch

Memcache::set
Memcache::replace