Convert Unix Timestamp to time zone?

Use DateTime and DateTimeZone:

$dt = new DateTime('@1369490592');
$dt->setTimeZone(new DateTimeZone('America/Chicago'));
echo $dt->format('F j, Y, g:i a');

An easier way to do that is:

While using gmdate(), add your time zone in seconds to unix_stamp in gmdate.

Consider my time zone is GMT+5:30. So 5 hr 30 min in seconds will be 19800

So, I'll do this:

gmdate("F j, Y, g:i a", 1369490592+19800)