code: public static function countPublishedFromToByPids($intFrom, $intTo, $arrPids, array $arrOptions=array())
  	{
  		if (empty($arrPids) || !\is_array($arrPids))
  		{
  			return null;
  		}
  
  		$t = static::$strTable;
  		$arrColumns = array("$t.date>=? AND $t.date<=? AND $t.pid IN(" . implode(',', array_map('\intval', $arrPids)) . ")");
  
  		if (!static::isPreviewMode($arrOptions))
  		{
  			$time = Date::floorToMinute();
  			$arrColumns[] = "($t.start='' OR $t.start<='$time') AND ($t.stop='' OR $t.stop>'" . ($time + 60) . "') AND $t.published='1'";
  		}
  
  		return static::countBy($arrColumns, array($intFrom, $intTo), $arrOptions);
  	}
docs: Count all published news items of a certain period of time by their parent ID
  
  @param integer $intFrom    The start date as Unix timestamp
  @param integer $intTo      The end date as Unix timestamp
  @param array   $arrPids    An array of news archive IDs
  @param array   $arrOptions An optional options array
  
  @return integer The number of news items