Is it possible to have global class variables in CodeIgniter? - codeigniter

Question

I am developing an application in CodeIgniter that has a member login system. I have a model that gets all the information of a requested member.
class Member extends CI_Model {
var $info = array();
var $error = NULL;
function __construct(){
parent::__construct();
}
public function get_info($member_id = ''){
$this->db->where('member_id', $member_id);
$this->db->limit(1);
$query = $this->db->get('members');
if($query->num_rows() > 0){
$member = $query->row_array();
$info = array(
'id' => $member['member_id'],
'display_name' => $member['display_name'],
'email_address' => $member['email_address'],
'password' => $member['password'],
'status' => ($member['status'] == 0) ? FALSE : TRUE,
'activation_code' => $member['activation_code'],
'location' => $member['location'],
'date_joined' => date('M jS, Y', $member['date_joined']),
'gender' => ($member['gender'] == 0) ? 'Male' : 'Female',
'results_per_page' => $member['results_per_page'],
'admin_emails' => ($member['admin_emails'] == 0) ? FALSE : TRUE,
'member_emails' => ($member['member_emails'] == 0) ? FALSE : TRUE
);
$this->info = $info;
} else {
$this->error = 'The member you requested could not be found in our database.';
}
}
At the top of my controllers and other models, I use the following to get the information of the current user to pass it along to all of the methods.
function __construct(){
parent::__construct();
$this->member->get_info($this->session->userdata('member_id'));
$this->user = $this->member->info;
}
function index(){
if($this->user['id'] > 0){
echo "You are logged in!";
} else {
echo "You are NOT logged in!";
}
}
Is there a way to do this on a global scale? It's kind of tiresome to type out the construct code at the top of every controller.

Answer 1

So I managed to find another post here on StackOverflow that solved my problem.
enter link description here
In application/core, I extended the existing Controller and Model classes with a few additions. Then I had to change my controllers and models to suit.
class Home extends MY_Controller {
}
application/core/MY_Model.php
class MY_Model extends CI_Model {
var $user = array();
function __construct(){
parent::__construct();
$this->load->model('member');
$this->member->get_info($this->session->userdata('member_id'));
$this->user = $this->member->info;
}
}
application/core/MY_Controller.php
class MY_Controller extends CI_Controller {
var $user = array();
function __construct(){
parent::__construct();
$this->load->model('member');
$this->member->get_info($this->session->userdata('member_id'));
$this->user = $this->member->info;
}
}

Answer 2

In construct simply try to access session data
function __construct() {
if($this->session->userdata('member_id')) {
echo 'You are logged in';
} else {
echo 'You are not logged in';
}
}
It is simple rather than getting all the data and selecting 'user id',if we check whether ths session data is there then a user is logged in orelse no one is logged.You can add this at your each controller construct function and you can check without help of any DB