CodeIgniter无法访问控制器中的全局变量

Question

I have already tried lots of ways. add library, add config file, add a controller, just add in same controller.........etc. This also have same problem: (this is add in same controller)

<?php
class Test extends CI_Controller{
  public $data = array();

  public function __construct(){
    parent::__construct();
    //if call add_data() here, it is work
  }

  function add_data(){
    $arraya = array('a'=>'aa', 'b'=>'bb');
    $this->data = $arraya;
  }

  function index(){
    $this->add_data();
  }

  function want_print(){
    print_r($this->data);
  }
}
?>

if I call add_data in index, i cannot get any data in want_print().... if I call add_data in the construct, i can get data in want_print()..

Please anyone help me solve this problem? I don't want to call it in construct because i will not call it every time...

Answer 1

You can set the data in your want_print() function like this:

function want_print() {
    $this->index();
    print_r($this->data);
}