Return local time from unix timestamp with timezone identifier in php

Question

I have a dropdown box on a webpage that takes a timezone identifier as the value (however I can change it to save the GMT offset if that is a better choice). Currently a use

Answer 1

The easiest approach would be to use DateTime with:

$t = new DateTime();
$t->setTimestamp( $time=time() );
$t->setTimeZone(new DateTimeZone("America/Denver"));
print $t->format(DateTime::RFC850);

The timezone can be changed at will to cause the format function to recalculate the local time.