How to round numbers with PHP

Rounding numbers can be done a number of ways. You can round a float up or down
to the nearest integer or you could round to a specific precision. Even then
you can choose whether or not to round halves up or down and even round towards
even and odd values. Let’s take a look at the PHP code to pull this off:

Round up to the nearest integer

ceil(12.30 // 13

Round down to the nearest integer

floor(6.66 // 6

Round to 2 decimal places

round(3.1415926535, 2 // 3.14

Round half up

round(7.5, 0, PHP_ROUND_HALF_UP // 8

Round half down

round(7.5, 0, PHP_ROUND_HALF_DOWN // 7

Round half even

round(5.5, 0, PHP_ROUND_HALF_EVEN // 6

Round half odd

round(5.5, 0, PHP_ROUND_HALF_ODD // 5

As always, there’s many ways to skin this cat with PHP.

Josh Sherman - The Man, The Myth, The Avatar

About Josh

Husband. Father. Pug dad. Musician. Founder of Holiday API, Head of Engineering and Emoji Specialist at Mailshake, and author of the best damn Lorem Ipsum Library for PHP.

If you found this article helpful, please consider buying me a coffee.