Is there a PHP function anywhere which converts between the timezone name (such as those found here: http://php.net/manual/en/timezones.america.php) and the \"value\" such as Ea
If you know the value from your list at (http://php.net/manual/en/timezones.america.php) you can do something like.
setTimeZone(new DateTimeZone('America/New_York')); echo $dateTime->format('T'); ?>