<?php
$theTime = time(); // specific date/time we're checking, in epoch seconds.
$tz = new DateTimeZone('America/New_York');
$transition = $tz->getTransitions($theTime, $theTime);
// only one array should be returned into $transition. Now get the data:
$offset = $transition[0]['offset'];
$abbr = $transition[0]['abbr'];
echo $offset . ' - ' . $abbr;