Correct way to display my query - php

Question

I have a query in my model that I need to print the data in my view
Model
function get_bank()
{
$query = $this->db->query("SELECT
(
12* (YEAR('account_add_date') - YEAR('start_date')) +
(MONTH('account_add_date') - MONTH('start_date'))
) AS differenceInMonth
->FROM ('bank')
WHERE mem_id = '".$this->session->userdata('id')."'");
return $query->result();
$data['account_age'] = $query->row_array();
}
and I am trying to print the output in my model, but its not working and I do not know where I have gone wrong. I am new to MVC and still getting used to it.
View
<h2>age of account</h2>
<?php
$age = $this->model('profiles_model' , $data );
print "<h2>$age</h2>";
?>
Controller
function index()
{
$data = array();
$this->load->model('user_profile/profiles_model');
$query = $this->profiles_model->get_bank();
if(!empty($query))
{
$data['records'] = $query;
}
$this->load->view('profile_view', $data);
}

Answer 1

Let's first write your code in proper convention.
Model
function get_bank() {
$mem_id = $this->session->userdata('id');
$query = $this->db
->select("12*(YEAR('account_add_date') - YEAR('start_date')) + (MONTH('account_add_date') - MONTH('start_date')) AS differenceInMonth")
->where('mem_id', $mem_id)
->get('bank');
return $query;
// $data['account_age'] = $query->row_array(); <-- Statement after return is useless.
}
Controller
function index() {
$data = array(
'records' => array()
);
$this->load->model('user_profile/profiles_model');
$bank = $this->profiles_model->get_bank();
if($bank->num_rows()){
$data['records'] = $bank->row_array();
}
$this->load->view('profile_view', $data);
}
View
Not sure what you are trying to do with the bank data but here's how you print the record
<p>Bank data</p>
<p><?=isset($records['differenceInMonth'])?$records['differenceInMonth']:"No record found"?></p>

Answer 2

You are not far away, do it this way:
Controller:
function index()
{
$this->load->model('user_profile/profiles_model');
$data = $this->profiles_model->get_bank();
$this->load->view('profile_view', $data);
}
Model:
function get_bank()
{
$query = $this->db->query("SELECT
(
12* (YEAR('account_add_date') - YEAR('start_date')) +
(MONTH('account_add_date') - MONTH('start_date'))
) AS differenceInMonth
->FROM ('bank')
WHERE mem_id = '".$this->session->userdata('id')."'");
return $query->result();
}
View:
<?php
foreach(differenceInMonth AS $age){
echo "<p>" . $age . "</p>";
}

Answer 3

When you load the view you are passing in $data with $data['records'] that has the data you are wanting to display.
Since that is how you pass the data into the view when you load it you will need to call it that way:
<?php
var_dump($records);
?>
You will also need to loop through the data as well assuming $records is an array of the query results or use var_dump instead of print just to verify the data is there.
Reading through these will help going forward:
https://codeigniter.com/user_guide/general/views.html
https://codeigniter.com/user_guide/general/models.html