Converting a Mysql Result Object to Associative Array (CodeIgniter)

I'm trying to get a database query which is an object converted to an associative array, so that I can use it in the calendar class in codeigniter.

This is my model:

<?php

class Get_diary_model extends Model {
    
    function getAllDiaries($year,$month) {
        
        $data = $this->db->query("SELECT day AND entry FROM diary WHERE month=$month AND year=$year"); // the entries for the relevant month and year
        
        foreach($data->result_array() as $row) { // return result as assoc array to use in calendar
            echo $row['day'];
            echo $row['entry'];
        }

        return $data;
        }
    }

and this is the error I get:

Fatal error: Cannot use object of type CI_DB_mysql_result as array in C:\wamp\www\mm\system\libraries\Calendar.php on line 219

Check ou this video tutorial, it will help you -> http://net.tutsplus.com/tutorials/php/codeigniter-from-scratch-the-calendar-library/

Your model should look like this:

    function getAllDiaries($year,$month)
    {
        $q = $this->db->query("SELECT day AND entry FROM diary WHERE month=$month AND year=$year");

        if($q->num_rows() > 0):
            foreach($q->result() as $row):
                $data[] = $row;
            endforeach;
            return $data;
        else:
            return false;
        endif;
    }

and your controller:

    function index($year = null, $month = null)
    {
        $this->load->model('Get_diary_model');

        if (!$year) {
            $year = date('Y');
        }
        if (!$month) {
            $month = date('m');
        }

        $data['calendar'] = $this->Get_diary_model->getAllDiaries($year, $month);
}