function date_views_browser_period_start_stamp in Date 5

Find the timestamp for the beginning of the period of the analyzed date arg

3 calls to date_views_browser_period_start_stamp()

date_views_browser_navigation in ./date_views.inc

Navigation links for the full view

date_views_browser_period_arg in ./date_views.inc

Format an argument for the date range

date_views_browser_period_label in ./date_views.inc

Return label for current date range

File

./date_views.inc, line 716

Code

function date_views_browser_period_start_stamp($arg = NULL, $period = 'month') {
  include_once drupal_get_path('module', 'date_api') . '/date.inc';

  // get the range of dates
  $range = date_views_date_range($arg);
  $stamp = date_iso2unix($range[0]);

  // if a date range has already been determined, return the beginning of that range
  if ($arg) {
    return $stamp;
  }

  // if no range is yet set, find the beginning of the appropriate period
  switch ($period) {
    case 'week':
      $dow = date_gmdate('w', $stamp);
      if ($dow >= 6) {
        $adj = 86400 * 7;
      }
      $start = intval($stamp - intval($dow * 86400) + $adj);

      // if site preference is to start week on other than a Sunday, go back a week and move up to correct day
      if (variable_get('date_first_day', 0)) {
        $start += intval(variable_get('date_first_day', 0) * 86400);
      }
      break;
    case 'year':
      $year = date_gmdate('Y', $stamp);
      $start = date_gmmktime(array(
        'year' => $year,
        'mon' => 1,
        'mday' => 1,
      ));
      break;
    case 'day':
      $year = date_gmdate('Y', $stamp);
      $month = date_gmdate('n', $stamp);
      $day = date_gmdate('j', $stamp);
      $start = date_gmmktime(array(
        'year' => $year,
        'mon' => $month,
        'mday' => $day,
        'hours' => 1,
      ));
      break;
    case 'hour':
      $year = date_gmdate('Y', $stamp);
      $month = date_gmdate('n', $stamp);
      $day = date_gmdate('j', $stamp);
      $hour = date_gmdate('H', $stamp);
      $start = date_gmmktime(array(
        'year' => $year,
        'mon' => $month,
        'mday' => $day,
        'hours' => $hour,
        'minutes' => 1,
      ));
      break;
    default:
      $year = date_gmdate('Y', $stamp);
      $month = date_gmdate('n', $stamp);
      $start = date_gmmktime(array(
        'year' => $year,
        'mon' => $month,
        'mday' => 1,
      ));
      break;
  }
  return $start;
}