/usr/share/php/Date/Human.php is in php-date 1.4.7-3.
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/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4 foldmethod=marker: */
// {{{ Header
/**
* Class to convert date strings between Gregorian and Human calendar formats
*
* The Human Calendar format has been proposed by Scott Flansburg and can be
* explained as follows:
* The year is made up of 13 months
* Each month has 28 days
* Counting of months starts from 0 (zero) so the months will run from 0 to 12
* New Years day (00) is a monthless day
* Note: Leap Years are not yet accounted for in the Human Calendar system
*
* PHP versions 4 and 5
*
* LICENSE:
*
* Copyright (c) 1997-2006 Allan Kent
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted under the terms of the BSD License.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* @category Date and Time
* @package Date
* @author Allan Kent <allan@lodestone.co.za>
* @copyright 1997-2006 Allan Kent
* @license http://www.opensource.org/licenses/bsd-license.php
* BSD License
* @version CVS: $Id: Human.php,v 1.6 2006/11/21 17:38:15 firman Exp $
* @link http://pear.php.net/package/Date
* @since File available since Release 1.3
*/
// }}}
// {{{ Class: Date_Human
/**
* Class to convert date strings between Gregorian and Human calendar formats
*
* The Human Calendar format has been proposed by Scott Flansburg and can be
* explained as follows:
* The year is made up of 13 months
* Each month has 28 days
* Counting of months starts from 0 (zero) so the months will run from 0 to 12
* New Years day (00) is a monthless day
* Note: Leap Years are not yet accounted for in the Human Calendar system
*
* @author Allan Kent <allan@lodestone.co.za>
* @copyright 1997-2005 Allan Kent
* @license http://www.opensource.org/licenses/bsd-license.php
* BSD License
* @version Release: 1.4.7
* @link http://pear.php.net/package/Date
* @since Class available since Release 1.3
*/
class Date_Human
{
// {{{ gregorianToHuman()
/**
* Returns an associative array containing the converted date information
* in 'Human Calendar' format.
*
* @param int day in DD format, default current local day
* @param int month in MM format, default current local month
* @param int year in CCYY format, default to current local year
*
* @access public
*
* @return associative array(
* hdom, // Human Day Of Month, starting at 1
* hdow, // Human Day Of Week, starting at 1
* hwom, // Human Week of Month, starting at 1
* hwoy, // Human Week of Year, starting at 1
* hmoy, // Human Month of Year, starting at 0
* )
*
* If the day is New Years Day, the function will return
* "hdom" => 0
* "hdow" => 0
* "hwom" => 0
* "hwoy" => 0
* "hmoy" => -1
* Since 0 is a valid month number under the Human Calendar, I have left
* the month as -1 for New Years Day.
*/
function gregorianToHuman($day=0, $month=0, $year=0)
{
/*
* Check to see if any of the arguments are empty
* If they are then populate the $dateinfo array
* Then check to see which arguments are empty and fill
* those with the current date info
*/
if ((empty($day) || (empty($month)) || empty($year))) {
$dateinfo = getdate(time());
}
if (empty($day)) {
$day = $dateinfo["mday"];
}
if (empty($month)) {
$month = $dateinfo["mon"];
}
if (empty($year)) {
$year = $dateinfo["year"];
}
/*
* We need to know how many days into the year we are
*/
$dateinfo = getdate(mktime(0, 0, 0, $month, $day, $year));
$dayofyear = $dateinfo["yday"];
/*
* Human Calendar starts at 0 for months and the first day of the year
* is designated 00, so we need to start our day of the year at 0 for
* these calculations.
* Also, the day of the month is calculated with a modulus of 28.
* Because a day is 28 days, the last day of the month would have a
* remainder of 0 and not 28 as it should be. Decrementing $dayofyear
* gets around this.
*/
$dayofyear--;
/*
* 28 days in a month...
*/
$humanMonthOfYear = floor($dayofyear / 28);
/*
* If we are in the first month then the day of the month is $dayofyear
* else we need to find the modulus of 28.
*/
if ($humanMonthOfYear == 0) {
$humanDayOfMonth = $dayofyear;
} else {
$humanDayOfMonth = ($dayofyear) % 28;
}
/*
* Day of the week is modulus 7
*/
$humanDayOfWeek = $dayofyear % 7;
/*
* We can now increment $dayofyear back to it's correct value for
* the remainder of the calculations
*/
$dayofyear++;
/*
* $humanDayOfMonth needs to be incremented now - recall that we fudged
* it a bit by decrementing $dayofyear earlier
* Same goes for $humanDayOfWeek
*/
$humanDayOfMonth++;
$humanDayOfWeek++;
/*
* Week of the month is day of the month divided by 7, rounded up
* Same for week of the year, but use $dayofyear instead $humanDayOfMonth
*/
$humanWeekOfMonth = ceil($humanDayOfMonth / 7);
$humanWeekOfYear = ceil($dayofyear / 7);
/*
* Return an associative array of the values
*/
return array(
"hdom" => $humanDayOfMonth,
"hdow" => $humanDayOfWeek,
"hwom" => $humanWeekOfMonth,
"hwoy" => $humanWeekOfYear,
"hmoy" => $humanMonthOfYear );
}
// }}}
// {{{ humanToGregorian()
/**
* Returns unix timestamp for a given Human Calendar date
*
* @param int day in DD format
* @param int month in MM format
* @param int year in CCYY format, default to current local year
*
* @access public
*
* @return int unix timestamp of date
*/
function humanToGregorian($day, $month, $year=0)
{
/*
* Check to see if the year has been passed through.
* If not get current year
*/
if (empty($year)) {
$dateinfo = getdate(time());
$year = $dateinfo["year"];
}
/*
* We need to get the day of the year that we are currently at so that
* we can work out the Gregorian Month and day
*/
$DayOfYear = $month * 28;
$DayOfYear += $day;
/*
* Human Calendar starts at 0, so we need to increment $DayOfYear
* to take into account the day 00
*/
$DayOfYear++;
/*
* the mktime() function will correctly calculate the date for out of
* range values, so putting $DayOfYear instead of the day of the month
* will work fine.
*/
$GregorianTimeStamp = mktime(0, 0, 0, 1, $DayOfYear, $year);
return $GregorianTimeStamp;
}
// }}}
}
// }}}
/*
* Local variables:
* mode: php
* tab-width: 4
* c-basic-offset: 4
* c-hanging-comment-ender-p: nil
* End:
*/
?>
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