CodeIgniter - sorting CSV - php

Question

I have a table in my DB with following headers: user, category, title, marks
And values in it are like this
User1 - Food - Pizza - 19
User2 - Drinks - Cola - 18
User2 - Food - Spaghetti - 19
User1 - Food - Potato - 15
User1 - Drinks- Pepsi- 10
User2 - Food - Onion - 11
User1 - Food - Tomato - 10
This is also the way it printed in my CSV file, But what I'm trying to achieve in my CSV file is this format
A(user) B(=category) C D E
1. User 1 Food Pizza -19 Potato - 15 Tomato - 10
2. Drinks Pepsi
3. Empty row
4. User 2 Food Spaghetti-19 Onion-11
5. Drinks Cola-18
6. Empty Row
7. A third user with his category's
This basically what I'm trying to achieve - Sorting the user then sorting the category's that the user has and then at every category the user has print the titles and the scores. But How can I sort and do logic for putting in a CSV?
I have the following code
Model:
function CSV(){
$this->load->dbutil();
$this->db->select('user, category, title, score');
$query = $this->db->get('Table_restaurant_scores');
return $this->dbutil->csv_from_result($query, ";", "\r\n");
}
Controller:
function exporting(){
$this->load->model('restaurant_mdl');
$this->load->helper('download');
$name = 'restaurant_scores.csv';
$data = $this->restaurant_mdl->CSV();
force_download($name, $data);
}
Can someone help me out with this?

Answer 1

It depends on how you fetch your data in your model. You need to add order_by statement in your query e.g
$this->db->order_by("user", "asc");
$this->db->order_by("category", "asc");
// Produces: ORDER BY user DESC, category ASC