# Memcache::set

(PECL memcache >= 0.2.0)

Memcache::set — Store data at the server

### Description

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

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() - Add an item to the server
- Memcache::replace() - Replace value of the existing item