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<?php
/* --------------------------------------------------------------
EmptyDateTime.inc.php 2016-02-16
Gambio GmbH
http://www.gambio.de
Copyright (c) 2016 Gambio GmbH
Released under the GNU General Public License (Version 2)
[http://www.gnu.org/licenses/gpl-2.0.html]
--------------------------------------------------------------
*/
/**
* EmptyDateTime
*
* The purpose of this class is to represent a DateTime with support of an empty date 1000-01-01 00:00:00
*
* @category System
* @package Shared
* @extends DateTime
*/
class EmptyDateTime extends DateTime
{
/**
* @var bool
*/
protected $isNullDate = false;
/**
* @param string $time A date/time string. NULL will be represented as 1000-01-01 00:00:00 instead of
* the current time like in DateTime.
* @param DateTimeZone $timeZone A DateTimeZone object representing the timezone of $time. If $timezone is omitted,
* the current timezone will be used.
*/
public function __construct($time = '1000-01-01 00:00:00', DateTimeZone $timeZone = null)
{
if(strpos($time, '0000') === 0 || empty($time) || $time === '00.00.0000')
{
$time = '1000-01-01 00:00:00';
}
if($time === '1000-01-01 00:00:00')
{
$this->isNullDate = true;
}
parent::__construct($time, $timeZone);
}
/**
* Formats a date by a given pattern and ensures, that dates that represent empty data are formatted to
* '1000-01-01 00:00:00'
*
* @param string $format
*
* @return string
*/
public function format($format)
{
$formattedDate = parent::format($format);
return $formattedDate;
}
}