Can I use a generated variable name in PHP?

Question

I have a bunch a values I would like to add together which are entered into a form. Right now, the form has 11 lines but it could get larger in the future. I can easily add

Answer 1

The values you need are posted from a form, right? If so, you could iterate through the keys in the $_POST variable that match your form field's generated names.

foreach($_POST as $key=>$value)
{
  if(strpos($key, 'pBalance')===0)
  {
    $final_total += $value;
  }
}