cache data in codeigniter

1if (! function_exists('getCacheSettings')){
2	function getCacheSettings($key)
3	{
4		if ($cacheSettingValue = checkCachedValue($key)) {
5			return $cacheSettingValue;
6		}
7
8		$ci = & get_instance();
9		$result = $ci->db->get_where('settings', array('key' => $key));
10
11		if ($result->num_rows() > 0) {
12			$fetchData = $result->row();
13			cacheFetchedData($key, base64_decode($fetchData->value));
14			return base64_decode($fetchData->value);
15		}
16		return null;
17	}
18}
19
20if (! function_exists('checkCachedValue')){
21	function checkCachedValue($key)
22	{
23		$ci = & get_instance();
24		$ci->load->driver('cache', array('adapter' => 'file'));
25		$cacheKeyData = $ci->cache->get("icd10_".$key);
26
27		return !empty($cacheKeyData) ? $cacheKeyData : false;
28	}
29}
30
31if (! function_exists('cacheFetchedData')){
32	function cacheFetchedData($key, $fetchedData)
33	{
34		$ci = & get_instance();
35		$ci->load->driver('cache', array('adapter' => 'file'));
36		// Save into the cache for 12 Hours
37		$ci->cache->save('icd10_'.$key, $fetchedData, 60 * 60 * 12);
38		return $fetchedData;
39	}
40}
41
42
43getCacheSettings('KEY_NAME');
44
45$this->cache->delete('cache_item_id');
46
47This method will ‘clean’ the entire cache. If the deletion of the cache files
48fails, the method will return FALSE.
49
50$this->cache->clean();
51
52refrence:
53https://www.codeigniter.com/userguide3/libraries/caching.html#example-usage

1class MY_Output extends CI_Output
2