时区转换，我该如何做到最好和正确

Question

So I have the following

• A match with a time and a timezone, this can be different from every match
• A user with a timezone

Now what do I want?

I want to display the time for the user in his timezone so if the match is on 12:00 in GMT+0 (Europe/London) then I want it to be displayed as 13:00 for Europe/Amsterdam.

I have no idea how to do this, please help me out ;)

EDIT Sorry, I use PHP

Answer 1

You can use PHP's DateTime class, which does a wonderful job of handling date/times and timezones. Here's an example of what you want.

/* Create a DateTime object using Europe/London Timezone */
$date = new DateTime("2012-12-10 12:00", new DateTimeZone("Europe/London"));
echo $date->format('r'); // Mon, 10 Dec 2012 12:00:00 +0000

/* Change the timezone to Europe/Amsterdam and output the new formatted date/time */
$date->setTimezone(new DateTimeZone("Europe/Amsterdam"));
echo $date->format('r'); // Mon, 10 Dec 2012 13:00:00 +0100