00001 <?php 00002 /*************************************************************************** 00003 * Copyright (C) 2007 by Konstantin V. Arkhipov * 00004 * * 00005 * This program is free software; you can redistribute it and/or modify * 00006 * it under the terms of the GNU Lesser General Public License as * 00007 * published by the Free Software Foundation; either version 3 of the * 00008 * License, or (at your option) any later version. * 00009 * * 00010 ***************************************************************************/ 00011 00018 class TimestampRange extends DateRange 00019 { 00023 public static function create($start = null, $end = null) 00024 { 00025 return new self($start, $end); 00026 } 00027 00028 public function getStartStamp() // null if start is null 00029 { 00030 if ($start = $this->getStart()) { 00031 return $start->toStamp(); 00032 } 00033 00034 return null; 00035 } 00036 00037 public function getEndStamp() // null if end is null 00038 { 00039 if ($end = $this->getEnd()) { 00040 return $end->toStamp(); 00041 } 00042 00043 return null; 00044 } 00045 00049 public function toTimestampRange() 00050 { 00051 return $this; 00052 } 00053 00054 protected function getObjectName() 00055 { 00056 return 'Timestamp'; 00057 } 00058 } 00059 ?>