Not changing the time zone maybe best but the only way as it seems is
the following:
function getNonDstOffset($timeZone, $dateTime)
{
$env_tz = date_default_timezone_get();
date_default_timezone_set($timeZone->getName());
$localtime = localtime(time(), true);
date_default_timezone_set($env_tz);
$offset = timezone_offset_get($timeZone, $dateTime);
$offset = $offset / (60 * 60) - (($localtime['tm_isdst'])?1:0);
//converts to hours
return $offset;
}
Also what side effects can the change of default time zone and turning
it back almost immediately have?
Regards,
Kupo
Dan Grossman wrote:
> This isn't Symfony specific, but thought one of ya PHP gurus might be
> able to help.
>
> I have some time zone strings (ex: "America/New_York" or
> "Europe/London"), and want to find the GMT offset of that timezone,
> *without DST adjustments*. In other words, the offset (like GMT -5) that
> I print should be consistent throughout the year.
>
> The first part I've figured out; how to easily remove DST adjustments I
> haven't. For example, for Europe/London, I get GMT+1 right now, where I
> want GMT+0, as it will be during London's winter.
>
> $dateTimeZone = new DateTimeZone($timeZoneString);
> $dateTime = new DateTime("now", $dateTimeZone);
> $offset = $dateTimeZone->getOffset($dateTime);
> if ($offset != 0) {
> $offset = $offset / (60 * 60); //converts to hours
> }
>
> Switching the timezone setting with date_default_timezone_set() or
> putenv('TZ=') can have side-effects, so something that doesn't involve
> tricking the thread into thinking it's in a different timezone would be
> best.
>
> >
>
>
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