(PHP 5.5.0, PECL >= 3.0.0a1)
IntlTimeZone::getOffset — Get the time zone raw and GMT offset for the given moment in time
$date
   , bool $local
   , integer &$rawOffset
   , integer &$dstOffset
   )
This function is currently not documented; only its argument list is available.
date
local
rawOffset
dstOffset