Contoh.php

<?php
defined('BASEPATH') OR exit('No direct script access allowed');

class Contoh extends MY_Controller{

  public function __construct()
  {
    parent::__construct();
    $this->load->library(array("btree"));
  }


  function get($id)
  {
    $is_parent = $this->btree->cek_is_parent($id);

      foreach ($is_parent as $value) {
        $data[$value]= $this->add_pairing($value);
      }

    echo json_encode($data);
  }


  function add_pairing($id)
  {
    $left = $this->btree->get_left_id_children($id);
    $right = $this->btree->get_right_id_children($id);

    $data = array($left ,$right );

    return $data;
  }


} //end class contoh