如何在PHP中将默认时区设置为用户的本地时区？ [重复]

Question

This question already has an answer here:

• Determine a user's timezone 24 answers

I want to set default timezone to the user's local timezone, please find my code below:

date_default_timezone_set("Asia/Karachi");
$currentHour = date('h:i');

My code works correctly, but only works only for Karachi; if user in other country it may not works.

</div>

Answer 1

You can't get a user's timezone on the server side, and you can only make a guess at it on the client side.

If you rely on getting the user's IP address then you could geolocate that and deduce a time.

The way this is usually done is by asking the user (when they register, for instance) what timezone they are in and then use this in your time calculations.

Or use this javascript solution

http://www.onlineaspect.com/2007/06/08/auto-detect-a-time-zone-with-javascript/