How to Round Numbers to the Nearest 10 in PHP?

Rounding Numbers to the Nearest 10 in PHP

In PHP, you can round a number to the nearest 10 using the built-in round() function. However, if you want to round a number specifically to the nearest multiple of 10, there's a more precise approach than simply using round().

Dividing by 10 and Rounding Up

To round a number to the nearest 10, you can divide it by 10, apply the ceil() function to round up to the nearest integer, and then multiply the result by 10 again. This effectively eliminates the significant digits beyond the tens place.

<code class="php">$number = ceil($input / 10) * 10;</code>

Example

Consider the number 23. Using the above approach:

<code class="php">$number = ceil(23 / 10) * 10;</code>

• Divide by 10: 23 / 10 = 2.3
• Round up to nearest integer using ceil(): ceil(2.3) = 3
• Multiply by 10: 3 * 10 = 30

Therefore, the number 23 is rounded up to the nearest 10, resulting in 30.

The above is the detailed content of How to Round Numbers to the Nearest 10 in PHP?. For more information, please follow other related articles on the PHP Chinese website!