php-general Digest 6 Oct 2013 22:19:43 -0000 Issue 8387
Topics (messages 322241 through 322242):
Re: Algorithm Help
322241 by: Nickolas Whiting
date time problem
322242 by: Jim Giner
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Round Robin algorithm should solve this and is a fairly quick alogrithm ...
http://en.wikipedia.org/wiki/Round-robin
An example can be found
http://forrst.com/posts/PHP_Round_Robin_Algorithm-2zm
On Tue, Oct 1, 2013 at 2:51 PM, Floyd Resler <fres...@adex-intl.com> wrote:
> Here's my task: A group of kids is going to be staying with different host
> families throughout the next 8 months. The number of kids staying with a
> host family can range from 2 to 10. When deciding which kids should stay
> together at a host family, the idea is for the system to put together kids
> who have stayed with each other the least on past weekends. So, if a host
> family can keep 5 kids, then the group of 5 kids who have stayed together
> the least will be chosen.
>
> I can't think of an easy, quick way to accomplish this. I've tried
> various approaches that have resulted in a lot of coding and being very
> slow. My idea was to give each group of kids a score and the lowest score
> is the group that is selected. However, this approach wound of iterating
> through several arrays several times which was really slow. Does anyone
> have any ideas on this puzzle?
>
> Thanks!
> Floyd
>
>
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>
--
Nickolas Whiting
Freelance Consultant
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I always hate dealing with date/time stuff in php - never get it even
close until an hour or two goes by....
anyway
I have this:
// get two timestamp values
$exp_time = $_COOKIE[$applid."expire"];
$curr_time = time();
// get the difference
$diff = $exp_time - $curr_time;
// produce a display time of the diff
$time_left = date("h:i:s",$diff);
Currently the results are:
exp_time is 06:55:07
curr_time is 06:12:03
the diff is 2584
All of these are correct.
BUT time_left is 07:43:04 when it should be only "00:43:04".
So - where is the hour value of '07' coming from?? And how do I get this
right?
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