php convert local time to utc time taking into consideration Daylight savings

Question

suppose I have a certain date:

$date = mktime($hour, $minute, $second, $month, $day, $year);

this date is in local time, now how can I convert it to utc time and store the new hour, minute ... in php variables similar to $hour, $minute ...

Answer 1

You can get UTC time with gmdate: http://php.net/manual/en/function.gmdate.php

Also you can change your timezone to UTC: date_default_timezone_set('UTC');