They tend to be specific to the form being processed, so that is probably a bad idea. You might be looking to use an array of incoming variables instead, e.g., by setting name="array[]" for the attribute and then accessing $_POST['array'] as an array (but remember to check that it exists with [man]isset[/man] or [man]empty[/man], and then check that it is an array with [man]is_array/man).