public function __construct()
{
parent::__construct();
$this->data['k'] = "";
$this->load->library(array('pagination', 'cart'));
$this->load->helper(array('url', 'string'));
}
public static function getInstance()
{
if (!self::$_instance instanceof self) {
self::$_instance = new self();
}
return self::$_instance;
}