Rounding numbers to ten

Question

What I'm trying to do seems rather simple, but I can't get it to work with the php.net documentation..

Numbers should always be rounded to "tens"

So:

1 -> 10

7 -> 10

12 -> 20

18 -> 20

23 -> 30

35 -> 40

cannot you use mod and then add 10 ? – Prog Mania Oct 24 '13 at 11:45 — Prog Mania, Oct 24 '13 at 11:45

score 1 · Answer 1 · answered Oct 24 '13 at 11:45

1

Something like this should work:

$rounded_num = round($orig_num / 10) * 10;

answered Oct 24 '13 at 11:45

John Conde

score 0 · Answer 2 · answered Oct 24 '13 at 11:46

0

Just read documentation about round.

round($number, -1);

answered Oct 24 '13 at 11:46

Gustek

**"but I can't get it to work with the php.net documentation"** Plus, haven't been able to access the damn php.net because of a malware notification. – Kevinster Oct 24 '13 at 13:46

score 0 · Answer 3 · answered Oct 24 '13 at 11:54

0

Your should use round() function. But if you want manual way, you can use something like that:

$number = 189;
$length = strlen((string)$number);
$div = '1';
for ($i=0;$i<$length-1;$i++){
$div .= '0';
}
$result = (int)$div*(ceil($number/$div));

$result = 200

answered Oct 24 '13 at 11:54

AxelPAL

3 Answers3