Memcache
PHP Manual

Memcache::add

(PECL memcache >= 0.2.0)

Memcache::add — Add an item to the server

Описание

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.

Список параметров

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).

Возвращаемые значения

Возвращает TRUE в случае успешного завершения или FALSE в случае возникновения ошибки. Returns FALSE if such key already exist. For the rest Memcache::add() behaves similarly to Memcache::set().

Примеры

Пример #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);

?>

Смотрите также

Memcache
PHP Manual
Участник рейтинга Тэглайн 2010