$production_order_id = $_REQUEST['num'];
$check_type = "stop";
 
switch ($check_type) {
    case "stop" :
    /*
    *check production order id for `NULL` in start and stop
    *there will be several rows with the same production_number_id
    *update all the NULL value in start and stop with $timestamp
    *and update user with "automated"
    * (this in case some one forgot to check in or out an order)
    *this should only ever affect one row, of course.
    */
    break; 
 
    case "start" :
    // update
    break;
}

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