Upgraded Code help needed

[ryanb4614]

Hello. I have upgrade from 1.3.8 to 1.3.9d today and I used this following code in tpl_main_page.php But it seems not to be working now. It is to disable columns on certain pages. Can anyone help me out? Columns are still showing.

//add page names that you wantto disable left and right columns 
   $center_column_only = array('login','account','checkout_shipping','checkout_payment','checkout_confirmation','shippinginfo','checkout_login','checkout_account'); 
// the following IF statement can be duplicated/modified as needed to set additional flags
  if (in_array($current_page_base,explode(",",'list_pages_to_skip_all_right_sideboxes_on_here,separated_by_commas,and_no_spaces')) ) {
    $flag_disable_right = true;
   $flag_disable_left = true; 
     }