Save User Secure

function saveUser(){
    $username = $this->input->post('username');
    $password = $this->input->post('password');
    $secure   = password_hash($password, PASSWORD_DEFAULT);
    $data     = [
        'username' => $username,
        'password' => $password,
    ];
    $this->load->model('model');
    $save = $this->model->saveUser('user',$data);
    if($save){
        redirect(SUCCESS_URL);
    }else{
        redirect(FAILED_URL);
    }
}