share array between function

Hi, if this question is too general I'm sorry =(

I have a conceptual problem.

I need to retrieve data from a db so I build a model function:

PHP Code:

public function lettura_dati($clienteemail)
{
  $this->db->where('email', $clienteemail);
  $query = $this->db->get('user');
  if ($query && $query->num_rows() > 0) {
    $row = $query->row();
    $cliente['nome'] = $row->nome;
    $cliente['cognome'] = $row->cognome;
    $cliente['id'] = $row->id;
    return $cliente;
  } else {
    echo "errore nella ricerca del nome";
  } 


This take a row based on the session email and store in an array all the data I need.
then on my controller I have:

PHP Code:

     public function index(){
        $this->load->model('model_users');
        $clienteemail = $this->session->userdata('email');
        $cliente = $this->model_users->lettura_dati($clienteemail);

              $data['title']='La Giumenta Bardata Dashboard'; //array per titolo e dati passati

              $this->load->view('auth/template/auth_header', $data);
              $this->load->view('auth/template/auth_nav', $cliente);
        $this->load->view('auth/clienti/auth_sidebar');
              $this->load->view('auth/clienti/client_dash');
              $this->load->view('auth/template/auth_footer');
      } 


the problem is that I need to build a series of functions that load different pages everypage has to show different data from the db.
I don't think that write for every function this code:

PHP Code:

$this->load->model('model_users');
        $clienteemail = $this->session->userdata('email');
        $cliente = $this->model_users->lettura_dati($clienteemail); 


Is really right...
So how can I make this three line of code, working for every functions of the same controller and share che $cliente array?

thank u