Manuale PHP
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Memcache::add

(no version information, might be only in CVS)

Memcache::add -- Add an item to the server

Descrizione

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.

Elenco dei parametri

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).

Valori restituiti

Restituisce TRUE in caso di successo, FALSE in caso di fallimento. Returns FALSE if such key already exist. For the rest Memcache::add() behaves similarly to Memcache::set().

Esempi

Esempio 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);

?>

Vedere anche:

Memcache::set()
Memcache::replace()



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