number formatting error

[Aviezero]

When $tottax get longer than XX.XX (ie. XXX.XX) I get invalid returns from this script. Are there better number formatting methods?

$tottax = ($subtot * $taxrate);
$tottax = number_format($tottax, 2);
echo "$".$tottax;

[lobobr]

The problem here is that you're trying to format a number with three decimal places with a function that only gets two.

So, you should do this:

$tottax = ($subtot * $taxrate);

list($a, $b) = split(".", $tottax); // splits the "decimal" part

$leng = strlen($b); // Length of "decimal" part

$tottax = number_format($tottax, $leng); // format with any numer of elements

echo "$".$tottax;

Hope it helps

[Aviezero]

dont think it works and it doesnt format how i want it to.
gives back something like $27 instead of $27.17 and
still gives incorrect data over values of 99 ( will just show "$0")

im still working with it ... changing it up a bit

[lobobr]

I think I got it.

Try this:

$dot = strpos($tottax,".") + 1; // Position of the dot
$len = (strlen($tottax) - $dot); // Number of decimal places

$tottax2 = number_format($tottax, $len); // format with any numer of elements 

Hope it helps.