model

<?php
defined('BASEPATH') OR exit('No direct script access allowed');

class Model_user extends CI_Model {

    public function check_credential()
    {
        $username = set_value('username');
        $password = set_value('password');

        $hasil = $this->db->where('username', $username)
                          ->where('password', MD5($password))
                          ->limit(1)
                          ->get('users');

        if($hasil->num_rows() > 0){
            return $hasil->row();
        } else {
            return array();
        }
    }

}