[TriLUG] OT?: php anomaly

[Donald J. Sipe III]

I have a hunch it has something to do with leap years.

On 8/17/06, stan briggs <stan at stanbriggs.com> wrote:
>
> DJ,
>
> that works.
>
> thanks for your effort!
>
> stan
>
> p.s. i do wish, though, that i understood why, on a single day of each
> year,
> adding 86400 (seconds) to the day only adds 23 hours.
>
> -----Original Message-----
> From: trilug-bounces at trilug.org [mailto:trilug-bounces at trilug.org] On
> Behalf
> Of Donald J. Sipe III
> Sent: Thursday, August 17, 2006 9:11 AM
> To: Triangle Linux Users Group discussion list
> Subject: Re: [TriLUG] OT?: php anomaly
>
> Stan,
>
> I think the problem is that the adding 86400 (the number of seconds in a
> day) doesn't always land on 00:00:00 (ie exactly at midnight).  It may be
> that it lands on 11:59:59, which will throw off the results--making the
> 29th
> appear twice.  I've actually ran into this problem before, I guess I just
> misunderstood the nature of your question at first.
>
> To get around it, I've taken to using strtotime("+1 day", $now) to
> increment
> time.  The function is more costly than some mathematical wizardry, but it
> works and you don't need an abacus to follow the code.  That said, the new
> code might look like this:
>
> <?
> $CurrentDate = strtotime("2006-10-24");
> $EndDate     = strtotime("2006-11-15");
> while ( $CurrentDate <= $EndDate ) {
>        $ShortDate  = date("m-d"  , $CurrentDate);
>        $MySQL4date = date("Y-m-d", $CurrentDate);
>        echo $ShortDate . '(' . $CurrentDate . ')[' . $MySQL4date . "]\n";
>        // $CurrentDate += 86400 ;
>        $CurrentDate = strtotime("+1 day", $CurrentDate); } ?>
>
>
> Cheers,
> DJ
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-- 
- DJ