How to format a float to n decimal places

Question

Example:

22.453667 => 22.45

34.65355 => 34.65

http://stackoverflow.com/questions/1619265/how-to-round-off-a-number-to-nearest-10 — noobie-php, Mar 13 '14 at 18:09

score 2 · Answer 1 · edited Mar 13 '14 at 18:23

2

You should use PHP's round function:

<?php
echo round(3.4);         // 3
echo round(3.5);         // 4
echo round(3.6);         // 4
echo round(3.6, 0);      // 4
echo round(1.95583, 2);  // 1.96
echo round(1241757, -3); // 1242000
echo round(5.045, 2);    // 5.05
echo round(5.055, 2);    // 5.06
?>

edited Mar 13 '14 at 18:23

Brandon

16,382
12
55
88

answered Mar 13 '14 at 18:14

vino

302
4
18

Any options : echo round(3,4453); // 3,44 echo round(3,536); // 3,53 echo round(3,6783); // 3,37 – vino Mar 13 '14 at 18:38

jogesh_pi · Answer 2 · 2014-03-13T18:29:15.103

1

use number_format:

$num = "22.469667";

// Without round
echo number_format( floor($num*100) / 100, 2, '.', '' );
// output: 22.46

echo "\n"; 

// With round
echo number_format($num, 2, '.', '' );
// output: 22.47

http://codepad.org/BjGiEeVa

edited Mar 13 '14 at 18:29

answered Mar 13 '14 at 18:13

jogesh_pi

9,762
4
37
65

score 1 · Answer 3 · answered Mar 13 '14 at 18:18

1

use round function

echo round(2.98684, 2); The output is 2.99

answered Mar 13 '14 at 18:18

codelover

317
1
11

score 0 · Answer 4 · answered Mar 13 '14 at 18:26

number_format() is a lot easier than jogesh_pi made it out to be.

Just do:

$num = "22.453667";
echo number_format($num, 2);

which returns: 22.45

It just needs the number as the first parameter and then the number of decimal points you want it to round to.

$num = "22.457667"; would return 22.46 $num = "22"; would return 22.00

http://codepad.org/9zollLf5

How to format a float to n decimal places

4 Answers4