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Memcache::set

(no version information, might be only in CVS)

Memcache::set -- Store data at the server

Описание

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

Memcache::set() stores an item var with key on the memcached server. Parameter expire is expiration time in seconds. If it's 0, the item never expires (but memcached server doesn't guarantee this item to be stored all the time, it could be deleted from the cache to make place for other items). You can use MEMCACHE_COMPRESSED constant as flag value if you want to use on-the-fly compression (uses zlib).

Замечание: Remember that resource variables (i.e. file and connection descriptors) cannot be stored in the cache, because they cannot be adequately represented in serialized state.

Also you can use memcache_set() 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.

Примеры

Пример 1. Memcache::set() example

<?php /* procedural API */ /* connect to memcached server */ $memcache_obj = memcache_connect('memcache_host', 11211); /* set value of item with key 'var_key' using 0 as flag value, compression is not used expire time is 30 seconds */ memcache_set($memcache_obj, 'var_key', 'some variable', 0, 30); echo memcache_get($memcache_obj, 'var_key'); ?>

Пример 2. Memcache::set() example

<?php /* OO API */ $memcache_obj = new Memcache; /* connect to memcached server */ $memcache_obj->connect('memcache_host', 11211); /* set value of item with key 'var_key', using on-the-fly compression expire time is 50 seconds */ $memcache_obj->set('var_key', 'some really big variable', MEMCACHE_COMPRESSED, 50); echo $memcache_obj->get('var_key'); ?>

Смотрите также

Memcache::add()

Memcache::replace()

add a note User Contributed Notes
Memcache::set

phalcos
24-Sep-2007 11:46


Here is a very visual example on how to use the memcache. It sets the key 'time' to the current time.

Put the example code in an empty page and keep reloading it.

As you can see, after 10 seconds your memcache key will be able to update with a new timestamp.



<?php



$memcache_obj = new Memcache;

$memcache_obj->connect('127.0.0.1', 11211);



if ($memcache_obj->get('time') == "") {

        $date = date("H:i:s");

        $memcache_obj->set('time', $date, MEMCACHE_COMPRESSED, 10);

}



echo "At ".date("H:i:s").", your key is ".$memcache_obj->get('time');



?>

add a note

Memcache::setCompressThreshold

Memcache::replace

Last updated: Sat, 27 Jan 2007

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11 июля 2007
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