PHP dividing decimal/integer values gives round up output

Question

When I'm dividing,

echo 50.3228679581385 / 100;
Output:0.50322867958139

It should be 0.503228679581385 . Is there any way to avoid default round up?

Possible duplicate of [Is floating point math broken?](https://stackoverflow.com/questions/588004/is-floating-point-math-broken) — Daniel W., Nov 14 '17 at 14:59
Read the article, it explains all the things about floating point numbers and arithmetic operations on a computer ;-) — Daniel W., Nov 14 '17 at 15:02

score 2 · Accepted Answer · answered Nov 14 '17 at 14:54

Yes, there's an INI setting for that, where 14 is the default value:

; The number of significant digits displayed in floating point numbers.
; http://php.net/precision
precision = 14

Increase to 15 or more, as necessary. Also works at runtime like this:

ini_set('precision', 15);

score 1 · Answer 2 · answered Nov 14 '17 at 14:49

1

It's not default round up, it's because of the precision limit on double.

answered Nov 14 '17 at 14:49

iamnoten

That's ok. To fix this? – Giri Annamalai M Nov 14 '17 at 14:53
This is a valid answer imo but it lacks references and explanation. – Daniel W. Nov 14 '17 at 14:56

2 Answers2