number format?

[searain]

what is the cleanest way to format the number to this

say

39.01 will be format as 3901

30.005 will be format as 3901

30.004 will be format as 3000

[mahers]

Multiply by 100 then round.

echo round(39.01*100); // 3901

Although I don't know how you will get this?
30.005 will be format as 3901