How to strtolower all query result keys

[eluser]skunkbad[/eluser]
Third and last, MY_CI_DB_mysqli_result.php

Code:

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

class MY_CI_DB_mysqli_result extends CI_DB_mysqli_result {

    function result_array()
    {
        if (count($this->result_array) > 0)
        {
            return $this->result_array;
        }

        // In the event that query caching is on the result_id variable
        // will return FALSE since there isn't a valid SQL resource so
        // we'll simply return an empty array.
        if ($this->result_id === FALSE OR $this->num_rows() == 0)
        {
            return array();
        }

        $this->_data_seek(0);
        while ($row = $this->_fetch_assoc())
        {
            $this->result_array[] = $row;
        }

        foreach ($this->result_array as $key => $value) {
            if (is_array($value)) {
                $this->result_array[$key] = array_change_key_case($value);
            }
        }

        return $this->result_array;
    }

}