Online PHP editor | refs for 5fPDn

<?php /** * @link http://stackoverflow.com/questions/26453510/datetimezone-and-utc-offset-for-standard-and-daylight-times */ /** * @param $seconds * * @return string +\d\d\d\d / -\d\d\d\d */ function format_offset($seconds) { $minutes = (int) ($seconds / 60); $hours = (int) ($minutes / 60); $leftover = abs($minutes - $hours * 60); return sprintf("%+03d%02d", $hours, $leftover); } $zones = array('ET', 'EDT', 'EST'); foreach ($zones as $zone) { // get offset $timezone = new DateTimeZone($zone); $offset = $timezone->getOffset(new DateTime(null, $timezone)); printf("%s (%s) %s\n", $zone, $timezone->getName(), format_offset($offset)); }