public function validateLogin() { if ($this->session->userdata('is_logged_in') == 1) { redirect('', 'refresh'); } else { $data = array(); $this->load->model('Users_model'); $p = new Users_model(); $p->user_id = $this->input->post('user_id'); $p->password = $this->input->post('password'); $result = $p->checkUser(); if ($result == 0) { redirect('', 'refresh'); echo mysqli_error($result); } else { $this->setSession(); } } }