Re: [OFF: logical question] rounding in steps of 15
| From: | Robin Vickery | Date: | Thu, 18 Aug 2005 08:30:37 +0000 |
| Subject: | Re: [OFF: logical question] rounding in steps of 15 | ||
| References: | 1 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-220837@lists.php.net to get a copy of this message | ||
On 8/18/05, Norbert Wenzel <mail@brain4art.at> wrote:
> Excuse me, I know my question is not PHP specific, but I hope there are
> some logical and mathematical talents in here, since I've always been
> fighting with maths. ;-)
>
> I have to provide a textfield, where workers enter their time they
> worked on a certain subject. The smallest degree should be 15 minutes,
> but the workers may enter every time, such as 357 or maybe 1:38.
>
> Is there any better way to determine the next 15min step, than to take
> for example 38 % 15 = 8 and see whether the result is nearer to 0 or to
> 15? In this case (8) 8 + 8 would be 16 so i would save 45 minutes of work..
$time = 38;
$roundedTime = 15 * round($time/15);
// $roundedTime is 45