How to round up a number to nearest 10?

Question

How can we round off a number to the nearest 10 in php?

Say I have 23, what code would I use to round it off to 30?

Answer 1

floor() will go down.

ceil() will go up.

round() will go to nearest by default.

Divide by 10, do the ceil, then multiply by 10 to reduce the significant digits.

$number = ceil($input / 10) * 10; 

Edit: I've been doing it this way for so long.. but TallGreenTree's answer is cleaner.