/**
* Gets APC instance if exists, otherwise creates a new instance.
*
* @return APC cache instance.
*/
public static function getInstance()
{
if (self::$instance === NULL) {
self::$instance = new self();
}
return self::$instance;
}
/**
* singleton function to return
* the instance of the class
*
* @return APCCache or NoCache
*/
public static function singleton()
{
if (!Cache::$enabled) {
return NoCache::singleton();
}
if (!self::$instance) {
self::$instance = new APCCache();
}
return self::$instance;
}
