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phpfloating-point-precisionbcmath

php - bcadd has different point precision

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?

Solution

  • 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";