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# Memcache::set

(no version information, might be only in CVS)

Memcache::set -- Store data at the server

## Description

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).

> Note: 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.

## Parameters

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).

## Return Values

Returns `TRUE` on success or `FALSE` on failure.

## Examples

Example 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'); ?>`

Example 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'); ?>`

## See Also

Memcache::add()
Memcache::replace()

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