Newbie trying to learn

[I Will Make It]

Hi!

I'm trying to learn some easy php.

Right now I would like to understand how I can take a number, ex: 42.5 and round it up or down to the closest number that ends on 9.

As in: 42.5 would be 39
but 47 would be 49

[lucy24]

Which direction do you want 44 to go?

:: thinking ::

Add 1, divide by 10, round to an integer.

[I Will Make It]

I didn't think of that scenario ;) But up :)
I'm making a small code that takes the cost price from my supplier, and converts into the saleprice on my webshop :)

Thank you for your quick response!

[LifeinAsia]

add 1, divide by 10, round to an integer, multiply by 10, subtract 1. :)

[lucy24]

"Having reduced the problem to a previously solved one, the mathematician went back to sleep."
:)

[I Will Make It]

I fixed it :) Thanks all