php - bcadd has different point precision

Question

On my windows box when I run

  $SR = "0";
  $SPR = "149";
  $SR = bcadd($SR, $SPR);
  echo "$SR";

It outputs 149.0000000000

But when I upload the same code to my Linux host, the output is 149.

Why?

PHP floating point precision depends on Operation System, as said in PHP manual — Raptor, Jun 01 '15 at 08:48

score 3 · Accepted Answer · edited Jun 01 '15 at 11:13

3

probably the "scale" is different on the two environments.

Try to set the scale with the bcscale function before doing your operations, For example:

bcscale(3);

$SR = "0";
$SPR = "149";
$SR = bcadd($SR, $SPR);
echo "$SR";

Or simply use the third parameter in bcadd to set the scale:

$SR = "0";
$SPR = "149";
$SR = bcadd($SR, $SPR, 3);
echo "$SR";

edited Jun 01 '15 at 11:13

Positivity

answered Jun 01 '15 at 08:48

Moppo

1 Answers1