function date_offset in Date 5

A function to calculate offset using timezone.inc file

Parameters

$date_parts - an array of date parts in the format created by getdate(): @param $timezone - the timezone to use @return $offset - the offset of $timezone from GMT on the $date_parts date

2 calls to date_offset()

date_convert_timezone in ./date.inc

Timezone conversion function

date_format_date in ./date.inc

Format date

File

./date.inc, line 395

Date/time API functions

Code

function date_offset($date_parts, $timezone = 'GMT') {
  include_once './' . drupal_get_path('module', 'date_api') . '/date_timezones.inc';

  // no adjustment needed for gmt dates
  if ($timezone == 'GMT') {
    return 0;
  }

  // find the timezone info for the input timezone
  $timezones = array_flip(date_zonelist());
  $zid = $timezones[$timezone];

  // create a timestamp for the date to be evaluated
  if ($date_parts['year'] < 1970) {

    // fudge offset for dates prior to 1970 by finding the offset in 1971
    $date_parts['year'] = 1971;
    $timestamp = date_array2unix($date_parts);
  }
  else {
    $timestamp = $date_parts[0];
  }
  return date_get_offset($zid, $timestamp);
}