"-{ Rene Brehmer }-" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> hi gang
>
> I'm trying to find a simple way to determine if a given date/time is with
> DST for a given locale at any point in time ... the point is basically to
> convert date strings into accurate GMT timestamps for storage in the
> database...
>
> Like I've got date strings looking like:
>
> Thursday, July 22, 2004 8:50:01 PM
> July 22, 2004 6:42 PM
>
> the strings are submitted through a form, together with a variable
> determining the time zone these times are in. I just want to figure out if
> the dates are with or without dst for that locale, at that given time, so
> that I can properly convert them to GMT times ... but I have no clue how
to
> do that ... haven't been able to find anything useful in the manual or the
> PHP Cookbook ... the time zone is submitted negative of the actual value
...
> so a time offset of -0700 is submitted as +7 and +0200 as -2 ... this is
> simply to make the time conversion simpler...
>
> these are extracts of the current time calculation codes, including some
> debugging code for the time conversion:
>
> <?php
> $date = $_POST['date'];
> $tzone = $_POST['tzone'];
>
> $timestamp = strtotime($date);
>
> if ($tzone != 'none') {
> $tdif = $tzone.' hours';
> $timestamp = strtotime($tdif,$timestamp);
> }
> ?>
>
> /* the following part is an extra of a larger table ... the formatting of
> the time zone is merely for displaying purposes atm. The goal is to create
> RFC2822 dates to be stored in the database alongside messages...
> */
>
> <td>Workdate: <?php echo($date.' '.$tzone); ?><br>
> Time difference: <?php
> if ($tzone > 0) {
> $format = '-';
> } else {
> $format = '+';
> }
> if (abs($tzone) > 9) {
> $format .= '%u00';
> } else {
> $format .= '0%u00';
> }
> printf($format,abs($tzone)); ?><br>
> Unix timestamp: <?php echo($timestamp); ?><br>
> GMT date: <?php echo(date('D, d M Y H:i:s',$timestamp)); ?></td>
>
>
> if anyone has any ideas for determining whether DST is on or off, I'd
> appreciate it. right now I have no clue how to do this the easiest...
>
> TIA
>
> Rene
> --
> Rene Brehmer
> aka Metalbunny
>
> If your life was a dream, would you wake up from a nightmare, dripping of
sweat, hoping it was over? Or would you wake up happy and pleased, ready to
take on the day with a smile?
>
> http://metalbunny.net/
> References, tools, and other useful stuff...
> Check out the new Metalbunny forums at http://forums.metalbunny.net/
Hi Rene,
I'm not totally sure but I loosely remember this topic being discussed here
some weeks ago. Try your look by searching the mailing list archives.
Best regards, Torsten Roehr
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