PHP : result to array function

if (!function_exists('result_to_array')) {
    function result_to_array($result_set=array(), $value_feild='', $label_field='')
    {

        $_ci = get_instance();
        $option = [];
        foreach ((array)$result_set as $key => $value) {

            if(is_array($label_field)){
                if(count($label_field) > 0){
                    $lbltext = array();
                    foreach ($label_field as $lblval) {
                        $lbltext[] = $value->$lblval;
                    }
                    $lbl = implode(' - ',$lbltext);
                }else{
                    $lbl = $value->$label_field;
                }
            }else{
                $lbl = $value->$label_field;
            }
            
            $option[$value->$value_feild] = $lbl;
        }
        return $option;
    }
}