==== set() ====
Store arbitrary data in the cache

<php>
set($id, $data, $tags = NULL, $lifetime = NULL)
</php>

==Parameters==

  * **[string]** ''$id'' The ID of the cached data. Must be unique.
  * **[mixed]** ''$data'' If $data is not a string it will be serialized for storage. 
  * **[mixed]** ''$tags''defaults to none, an array should be supplied.  This is useful when grouping caches together.
  * **[mixed]** ''$lifetime'' specific lifetime can be set. If none given the default lifetime from the configuration file will be used.

==Returns==

  * **[array]** The cached data.

===Usage===

This is one example
<code php>
$this->cache->set('existentialists', $data, $tags);
</code>

Here's another example
<code php>
$data = array('Jean Paul Sartre', 'Albert Camus', 'Simone de Beauvoir');
$tags = array('existentialism', 'philosophy', 'french');

$this->cache->set('existentialists', $data, $tags);
</code>