PHP to round up to the 2nd decimal place

Question

By calculating areas I have a number which I need to display in a strange way.

Always display 2 decimal places. Always round up the 2nd decimal place if the 3rd+ decimal places > 0.

Examples:

0.5 = 0.50
0.500003 = 0.51
0.96531 = 0.97
0.96231 = 0.97
0.8701 = 0.88

Is there a built in function to do this in PHP or do I need to write one?

[`round()`](http://www.php.net/manual/en/function.round.php) — John Conde, Apr 10 '14 at 14:30
possible duplicate of [PHP: show a number to 2 decimal places](http://stackoverflow.com/questions/4483540/php-show-a-number-to-2-decimal-places) — 0x9BD0, Apr 10 '14 at 14:30
multiply by 100, [`ceil()`](http://php.net/ceil), divide by 100 then format as needed — Wiseguy, Apr 10 '14 at 14:33

score 11 · Answer 1 · answered Apr 10 '14 at 14:48

11

To always round up you will want to use something like this:

$number = 0.8701;

echo ceil($number*100)/100;

// = 0.88

answered Apr 10 '14 at 14:48

Paul Blundell

ceil only rounds in + meaning 12.011 will be rounded to 12.02 – ied3vil Apr 10 '14 at 14:48
6

Yes, if you read the OP question that is what he has asked for. Always round up to 2 decimal places. – Paul Blundell Apr 10 '14 at 14:50

ied3vil · Accepted Answer · 2014-04-10T15:01:20.503

6

You can use 2 functions:

I've used both with success, and depending on what you're doing with the result, you may chose either of the above functions.

Later edit: If you want to only round up, you can use ceil() - http://www.php.net/manual/en/function.ceil.php + number format or round

echo round(ceil($number*100)/100,2);

As another user suggested earlier

edited Apr 10 '14 at 15:01

answered Apr 10 '14 at 14:31

ied3vil

3

Using the round function is not needed in this case as the division by 100 will format it to 2 decimal places. Ceil returns a whole integer. – Paul Blundell Apr 10 '14 at 15:15
the round() method will fail on a number with two decimals : echo round(ceil(1.12*100)/100, 2); # output 1.13 – Julien Feb 21 '20 at 09:04

2 Answers2