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Horde_Date_Recurrence.php
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Horde_Date_Recurrence.php
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<?php
/**
* This is a concatenated copy of the following files:
* Horde/Date.php, PEAR/Date/Calc.php, Horde/Date/Recurrence.php
*/
define('HORDE_DATE_SUNDAY', 0);
define('HORDE_DATE_MONDAY', 1);
define('HORDE_DATE_TUESDAY', 2);
define('HORDE_DATE_WEDNESDAY', 3);
define('HORDE_DATE_THURSDAY', 4);
define('HORDE_DATE_FRIDAY', 5);
define('HORDE_DATE_SATURDAY', 6);
define('HORDE_DATE_MASK_SUNDAY', 1);
define('HORDE_DATE_MASK_MONDAY', 2);
define('HORDE_DATE_MASK_TUESDAY', 4);
define('HORDE_DATE_MASK_WEDNESDAY', 8);
define('HORDE_DATE_MASK_THURSDAY', 16);
define('HORDE_DATE_MASK_FRIDAY', 32);
define('HORDE_DATE_MASK_SATURDAY', 64);
define('HORDE_DATE_MASK_WEEKDAYS', 62);
define('HORDE_DATE_MASK_WEEKEND', 65);
define('HORDE_DATE_MASK_ALLDAYS', 127);
define('HORDE_DATE_MASK_SECOND', 1);
define('HORDE_DATE_MASK_MINUTE', 2);
define('HORDE_DATE_MASK_HOUR', 4);
define('HORDE_DATE_MASK_DAY', 8);
define('HORDE_DATE_MASK_MONTH', 16);
define('HORDE_DATE_MASK_YEAR', 32);
define('HORDE_DATE_MASK_ALLPARTS', 63);
/**
* Horde Date wrapper/logic class, including some calculation
* functions.
*
* $Horde: framework/Date/Date.php,v 1.8.10.18 2008/09/17 08:46:04 jan Exp $
*
* @package Horde_Date
*/
class Horde_Date {
/**
* Year
*
* @var integer
*/
var $year;
/**
* Month
*
* @var integer
*/
var $month;
/**
* Day
*
* @var integer
*/
var $mday;
/**
* Hour
*
* @var integer
*/
var $hour = 0;
/**
* Minute
*
* @var integer
*/
var $min = 0;
/**
* Second
*
* @var integer
*/
var $sec = 0;
/**
* Internally supported strftime() specifiers.
*
* @var string
*/
var $_supportedSpecs = '%CdDeHImMnRStTyY';
/**
* Build a new date object. If $date contains date parts, use them to
* initialize the object.
*
* Recognized formats:
* - arrays with keys 'year', 'month', 'mday', 'day' (since Horde 3.2),
* 'hour', 'min', 'minute' (since Horde 3.2), 'sec'
* - objects with properties 'year', 'month', 'mday', 'hour', 'min', 'sec'
* - yyyy-mm-dd hh:mm:ss (since Horde 3.1)
* - yyyymmddhhmmss (since Horde 3.1)
* - yyyymmddThhmmssZ (since Horde 3.1.4)
* - unix timestamps
*/
function Horde_Date($date = null)
{
if (function_exists('nl_langinfo')) {
$this->_supportedSpecs .= 'bBpxX';
}
if (is_array($date) || is_object($date)) {
foreach ($date as $key => $val) {
if (in_array($key, array('year', 'month', 'mday', 'hour', 'min', 'sec'))) {
$this->$key = (int)$val;
}
}
// If $date['day'] is present and numeric we may have been passed
// a Horde_Form_datetime array.
if (is_array($date) && isset($date['day']) &&
is_numeric($date['day'])) {
$this->mday = (int)$date['day'];
}
// 'minute' key also from Horde_Form_datetime
if (is_array($date) && isset($date['minute'])) {
$this->min = $date['minute'];
}
} elseif (!is_null($date)) {
// Match YYYY-MM-DD HH:MM:SS, YYYYMMDDHHMMSS and YYYYMMDD'T'HHMMSS'Z'.
if (preg_match('/(\d{4})-?(\d{2})-?(\d{2})T? ?(\d{2}):?(\d{2}):?(\d{2})Z?/', $date, $parts)) {
$this->year = (int)$parts[1];
$this->month = (int)$parts[2];
$this->mday = (int)$parts[3];
$this->hour = (int)$parts[4];
$this->min = (int)$parts[5];
$this->sec = (int)$parts[6];
} else {
// Try as a timestamp.
$parts = @getdate($date);
if ($parts) {
$this->year = $parts['year'];
$this->month = $parts['mon'];
$this->mday = $parts['mday'];
$this->hour = $parts['hours'];
$this->min = $parts['minutes'];
$this->sec = $parts['seconds'];
}
}
}
}
/**
* @static
*/
function isLeapYear($year)
{
if (strlen($year) != 4 || preg_match('/\D/', $year)) {
return false;
}
return (($year % 4 == 0 && $year % 100 != 0) || $year % 400 == 0);
}
/**
* Returns the day of the year (1-366) that corresponds to the
* first day of the given week.
*
* TODO: with PHP 5.1+, see http://derickrethans.nl/calculating_start_and_end_dates_of_a_week.php
*
* @param integer $week The week of the year to find the first day of.
* @param integer $year The year to calculate for.
*
* @return integer The day of the year of the first day of the given week.
*/
function firstDayOfWeek($week, $year)
{
$jan1 = new Horde_Date(array('year' => $year, 'month' => 1, 'mday' => 1));
$start = $jan1->dayOfWeek();
if ($start > HORDE_DATE_THURSDAY) {
$start -= 7;
}
return (($week * 7) - (7 + $start)) + 1;
}
/**
* @static
*/
function daysInMonth($month, $year)
{
if ($month == 2) {
if (Horde_Date::isLeapYear($year)) {
return 29;
} else {
return 28;
}
} elseif ($month == 4 || $month == 6 || $month == 9 || $month == 11) {
return 30;
} else {
return 31;
}
}
/**
* Return the day of the week (0 = Sunday, 6 = Saturday) of this
* object's date.
*
* @return integer The day of the week.
*/
function dayOfWeek()
{
if ($this->month > 2) {
$month = $this->month - 2;
$year = $this->year;
} else {
$month = $this->month + 10;
$year = $this->year - 1;
}
$day = (floor((13 * $month - 1) / 5) +
$this->mday + ($year % 100) +
floor(($year % 100) / 4) +
floor(($year / 100) / 4) - 2 *
floor($year / 100) + 77);
return (int)($day - 7 * floor($day / 7));
}
/**
* Returns the day number of the year (1 to 365/366).
*
* @return integer The day of the year.
*/
function dayOfYear()
{
$monthTotals = array(0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334);
$dayOfYear = $this->mday + $monthTotals[$this->month - 1];
if (Horde_Date::isLeapYear($this->year) && $this->month > 2) {
++$dayOfYear;
}
return $dayOfYear;
}
/**
* Returns the week of the month.
*
* @since Horde 3.2
*
* @return integer The week number.
*/
function weekOfMonth()
{
return ceil($this->mday / 7);
}
/**
* Returns the week of the year, first Monday is first day of first week.
*
* @return integer The week number.
*/
function weekOfYear()
{
return $this->format('W');
}
/**
* Return the number of weeks in the given year (52 or 53).
*
* @static
*
* @param integer $year The year to count the number of weeks in.
*
* @return integer $numWeeks The number of weeks in $year.
*/
function weeksInYear($year)
{
// Find the last Thursday of the year.
$day = 31;
$date = new Horde_Date(array('year' => $year, 'month' => 12, 'mday' => $day, 'hour' => 0, 'min' => 0, 'sec' => 0));
while ($date->dayOfWeek() != HORDE_DATE_THURSDAY) {
--$date->mday;
}
return $date->weekOfYear();
}
/**
* Set the date of this object to the $nth weekday of $weekday.
*
* @param integer $weekday The day of the week (0 = Sunday, etc).
* @param integer $nth The $nth $weekday to set to (defaults to 1).
*/
function setNthWeekday($weekday, $nth = 1)
{
if ($weekday < HORDE_DATE_SUNDAY || $weekday > HORDE_DATE_SATURDAY) {
return false;
}
$this->mday = 1;
$first = $this->dayOfWeek();
if ($weekday < $first) {
$this->mday = 8 + $weekday - $first;
} else {
$this->mday = $weekday - $first + 1;
}
$this->mday += 7 * $nth - 7;
$this->correct();
return true;
}
function dump($prefix = '')
{
echo ($prefix ? $prefix . ': ' : '') . $this->year . '-' . $this->month . '-' . $this->mday . "<br />\n";
}
/**
* Is the date currently represented by this object a valid date?
*
* @return boolean Validity, counting leap years, etc.
*/
function isValid()
{
if ($this->year < 0 || $this->year > 9999) {
return false;
}
return checkdate($this->month, $this->mday, $this->year);
}
/**
* Correct any over- or underflows in any of the date's members.
*
* @param integer $mask We may not want to correct some overflows.
*/
function correct($mask = HORDE_DATE_MASK_ALLPARTS)
{
if ($mask & HORDE_DATE_MASK_SECOND) {
while ($this->sec < 0) {
--$this->min;
$this->sec += 60;
}
while ($this->sec > 59) {
++$this->min;
$this->sec -= 60;
}
}
if ($mask & HORDE_DATE_MASK_MINUTE) {
while ($this->min < 0) {
--$this->hour;
$this->min += 60;
}
while ($this->min > 59) {
++$this->hour;
$this->min -= 60;
}
}
if ($mask & HORDE_DATE_MASK_HOUR) {
while ($this->hour < 0) {
--$this->mday;
$this->hour += 24;
}
while ($this->hour > 23) {
++$this->mday;
$this->hour -= 24;
}
}
if ($mask & HORDE_DATE_MASK_MONTH) {
while ($this->month > 12) {
++$this->year;
$this->month -= 12;
}
while ($this->month < 1) {
--$this->year;
$this->month += 12;
}
}
if ($mask & HORDE_DATE_MASK_DAY) {
while ($this->mday > Horde_Date::daysInMonth($this->month, $this->year)) {
$this->mday -= Horde_Date::daysInMonth($this->month, $this->year);
++$this->month;
$this->correct(HORDE_DATE_MASK_MONTH);
}
while ($this->mday < 1) {
--$this->month;
$this->correct(HORDE_DATE_MASK_MONTH);
$this->mday += Horde_Date::daysInMonth($this->month, $this->year);
}
}
}
/**
* Compare this date to another date object to see which one is
* greater (later). Assumes that the dates are in the same
* timezone.
*
* @param mixed $date The date to compare to.
*
* @return integer == 0 if the dates are equal
* >= 1 if this date is greater (later)
* <= -1 if the other date is greater (later)
*/
function compareDate($date)
{
if (!is_a($date, 'Horde_Date')) {
$date = new Horde_Date($date);
}
if ($this->year != $date->year) {
return $this->year - $date->year;
}
if ($this->month != $date->month) {
return $this->month - $date->month;
}
return $this->mday - $date->mday;
}
/**
* Compare this to another date object by time, to see which one
* is greater (later). Assumes that the dates are in the same
* timezone.
*
* @param mixed $date The date to compare to.
*
* @return integer == 0 if the dates are equal
* >= 1 if this date is greater (later)
* <= -1 if the other date is greater (later)
*/
function compareTime($date)
{
if (!is_a($date, 'Horde_Date')) {
$date = new Horde_Date($date);
}
if ($this->hour != $date->hour) {
return $this->hour - $date->hour;
}
if ($this->min != $date->min) {
return $this->min - $date->min;
}
return $this->sec - $date->sec;
}
/**
* Compare this to another date object, including times, to see
* which one is greater (later). Assumes that the dates are in the
* same timezone.
*
* @param mixed $date The date to compare to.
*
* @return integer == 0 if the dates are equal
* >= 1 if this date is greater (later)
* <= -1 if the other date is greater (later)
*/
function compareDateTime($date)
{
if (!is_a($date, 'Horde_Date')) {
$date = new Horde_Date($date);
}
if ($diff = $this->compareDate($date)) {
return $diff;
}
return $this->compareTime($date);
}
/**
* Get the time offset for local time zone.
*
* @param boolean $colon Place a colon between hours and minutes?
*
* @return string Timezone offset as a string in the format +HH:MM.
*/
function tzOffset($colon = true)
{
$secs = $this->format('Z');
if ($secs < 0) {
$sign = '-';
$secs = -$secs;
} else {
$sign = '+';
}
$colon = $colon ? ':' : '';
$mins = intval(($secs + 30) / 60);
return sprintf('%s%02d%s%02d',
$sign, $mins / 60, $colon, $mins % 60);
}
/**
* Return the unix timestamp representation of this date.
*
* @return integer A unix timestamp.
*/
function timestamp()
{
if (class_exists('DateTime')) {
return $this->format('U');
} else {
return Horde_Date::_mktime($this->hour, $this->min, $this->sec, $this->month, $this->mday, $this->year);
}
}
/**
* Return the unix timestamp representation of this date, 12:00am.
*
* @return integer A unix timestamp.
*/
function datestamp()
{
if (class_exists('DateTime')) {
$dt = new DateTime();
$dt->setDate($this->year, $this->month, $this->mday);
$dt->setTime(0, 0, 0);
return $dt->format('U');
} else {
return Horde_Date::_mktime(0, 0, 0, $this->month, $this->mday, $this->year);
}
}
/**
* Format time using the specifiers available in date() or in the DateTime
* class' format() method.
*
* @since Horde 3.3
*
* @param string $format
*
* @return string Formatted time.
*/
function format($format)
{
if (class_exists('DateTime')) {
$dt = new DateTime();
$dt->setDate($this->year, $this->month, $this->mday);
$dt->setTime($this->hour, $this->min, $this->sec);
return $dt->format($format);
} else {
return date($format, $this->timestamp());
}
}
/**
* Format time in ISO-8601 format. Works correctly since Horde 3.2.
*
* @return string Date and time in ISO-8601 format.
*/
function iso8601DateTime()
{
return $this->rfc3339DateTime() . $this->tzOffset();
}
/**
* Format time in RFC 2822 format.
*
* @return string Date and time in RFC 2822 format.
*/
function rfc2822DateTime()
{
return $this->format('D, j M Y H:i:s') . ' ' . $this->tzOffset(false);
}
/**
* Format time in RFC 3339 format.
*
* @since Horde 3.1
*
* @return string Date and time in RFC 3339 format. The seconds part has
* been added with Horde 3.2.
*/
function rfc3339DateTime()
{
return $this->format('Y-m-d\TH:i:s');
}
/**
* Format time to standard 'ctime' format.
*
* @return string Date and time.
*/
function cTime()
{
return $this->format('D M j H:i:s Y');
}
/**
* Format date and time using strftime() format.
*
* @since Horde 3.1
*
* @return string strftime() formatted date and time.
*/
function strftime($format)
{
if (preg_match('/%[^' . $this->_supportedSpecs . ']/', $format)) {
return strftime($format, $this->timestamp());
} else {
return $this->_strftime($format);
}
}
/**
* Format date and time using a limited set of the strftime() format.
*
* @return string strftime() formatted date and time.
*/
function _strftime($format)
{
if (preg_match('/%[bBpxX]/', $format)) {
require_once 'Horde/NLS.php';
}
return preg_replace(
array('/%b/e',
'/%B/e',
'/%C/e',
'/%d/e',
'/%D/e',
'/%e/e',
'/%H/e',
'/%I/e',
'/%m/e',
'/%M/e',
'/%n/',
'/%p/e',
'/%R/e',
'/%S/e',
'/%t/',
'/%T/e',
'/%x/e',
'/%X/e',
'/%y/e',
'/%Y/',
'/%%/'),
array('$this->_strftime(NLS::getLangInfo(constant(\'ABMON_\' . (int)$this->month)))',
'$this->_strftime(NLS::getLangInfo(constant(\'MON_\' . (int)$this->month)))',
'(int)($this->year / 100)',
'sprintf(\'%02d\', $this->mday)',
'$this->_strftime(\'%m/%d/%y\')',
'sprintf(\'%2d\', $this->mday)',
'sprintf(\'%02d\', $this->hour)',
'sprintf(\'%02d\', $this->hour == 0 ? 12 : ($this->hour > 12 ? $this->hour - 12 : $this->hour))',
'sprintf(\'%02d\', $this->month)',
'sprintf(\'%02d\', $this->min)',
"\n",
'$this->_strftime(NLS::getLangInfo($this->hour < 12 ? AM_STR : PM_STR))',
'$this->_strftime(\'%H:%M\')',
'sprintf(\'%02d\', $this->sec)',
"\t",
'$this->_strftime(\'%H:%M:%S\')',
'$this->_strftime(NLS::getLangInfo(D_FMT))',
'$this->_strftime(NLS::getLangInfo(T_FMT))',
'substr(sprintf(\'%04d\', $this->year), -2)',
(int)$this->year,
'%'),
$format);
}
/**
* mktime() implementation that supports dates outside of 1970-2038,
* from http://phplens.com/phpeverywhere/adodb_date_library.
*
* @TODO remove in Horde 4
*
* This does NOT work with pre-1970 daylight saving times.
*
* @static
*/
function _mktime($hr, $min, $sec, $mon = false, $day = false,
$year = false, $is_dst = false, $is_gmt = false)
{
if ($mon === false) {
return $is_gmt
? @gmmktime($hr, $min, $sec)
: @mktime($hr, $min, $sec);
}
if ($year > 1901 && $year < 2038 &&
($year >= 1970 || version_compare(PHP_VERSION, '5.0.0', '>='))) {
return $is_gmt
? @gmmktime($hr, $min, $sec, $mon, $day, $year)
: @mktime($hr, $min, $sec, $mon, $day, $year);
}
$gmt_different = $is_gmt
? 0
: (mktime(0, 0, 0, 1, 2, 1970, 0) - gmmktime(0, 0, 0, 1, 2, 1970, 0));
$mon = intval($mon);
$day = intval($day);
$year = intval($year);
if ($mon > 12) {
$y = floor($mon / 12);
$year += $y;
$mon -= $y * 12;
} elseif ($mon < 1) {
$y = ceil((1 - $mon) / 12);
$year -= $y;
$mon += $y * 12;
}
$_day_power = 86400;
$_hour_power = 3600;
$_min_power = 60;
$_month_table_normal = array('', 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);
$_month_table_leaf = array('', 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);
$_total_date = 0;
if ($year >= 1970) {
for ($a = 1970; $a <= $year; $a++) {
$leaf = Horde_Date::isLeapYear($a);
if ($leaf == true) {
$loop_table = $_month_table_leaf;
$_add_date = 366;
} else {
$loop_table = $_month_table_normal;
$_add_date = 365;
}
if ($a < $year) {
$_total_date += $_add_date;
} else {
for ($b = 1; $b < $mon; $b++) {
$_total_date += $loop_table[$b];
}
}
}
return ($_total_date + $day - 1) * $_day_power + $hr * $_hour_power + $min * $_min_power + $sec + $gmt_different;
}
for ($a = 1969 ; $a >= $year; $a--) {
$leaf = Horde_Date::isLeapYear($a);
if ($leaf == true) {
$loop_table = $_month_table_leaf;
$_add_date = 366;
} else {
$loop_table = $_month_table_normal;
$_add_date = 365;
}
if ($a > $year) {
$_total_date += $_add_date;
} else {
for ($b = 12; $b > $mon; $b--) {
$_total_date += $loop_table[$b];
}
}
}
$_total_date += $loop_table[$mon] - $day;
$_day_time = $hr * $_hour_power + $min * $_min_power + $sec;
$_day_time = $_day_power - $_day_time;
$ret = -($_total_date * $_day_power + $_day_time - $gmt_different);
if ($ret < -12220185600) {
// If earlier than 5 Oct 1582 - gregorian correction.
return $ret + 10 * 86400;
} elseif ($ret < -12219321600) {
// If in limbo, reset to 15 Oct 1582.
return -12219321600;
} else {
return $ret;
}
}
}
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4 foldmethod=marker: */
// {{{ Header
/**
* Calculates, manipulates and retrieves dates
*
* It does not rely on 32-bit system time stamps, so it works dates
* before 1970 and after 2038.
*
* PHP versions 4 and 5
*
* LICENSE:
*
* Copyright (c) 1999-2007 Monte Ohrt, Pierre-Alain Joye, Daniel Convissor,
* C.A. Woodcock
* 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 Monte Ohrt <monte@ispi.net>
* @author Pierre-Alain Joye <pajoye@php.net>
* @author Daniel Convissor <danielc@php.net>
* @author C.A. Woodcock <c01234@netcomuk.co.uk>
* @copyright 1999-2007 Monte Ohrt, Pierre-Alain Joye, Daniel Convissor, C.A. Woodcock
* @license http://www.opensource.org/licenses/bsd-license.php
* BSD License
* @version CVS: $Id: Calc.php,v 1.57 2008/03/23 18:34:16 c01234 Exp $
* @link http://pear.php.net/package/Date
* @since File available since Release 1.2
*/
// }}}
// {{{ General constants:
if (!defined('DATE_CALC_BEGIN_WEEKDAY')) {
/**
* Defines what day starts the week
*
* Monday (1) is the international standard.
* Redefine this to 0 if you want weeks to begin on Sunday.
*/
define('DATE_CALC_BEGIN_WEEKDAY', 1);
}
if (!defined('DATE_CALC_FORMAT')) {
/**
* The default value for each method's $format parameter
*
* The default is '%Y%m%d'. To override this default, define
* this constant before including Calc.php.
*
* @since Constant available since Release 1.4.4
*/
define('DATE_CALC_FORMAT', '%Y%m%d');
}
// {{{ Date precision constants (used in 'round()' and 'trunc()'):
define('DATE_PRECISION_YEAR', -2);
define('DATE_PRECISION_MONTH', -1);
define('DATE_PRECISION_DAY', 0);
define('DATE_PRECISION_HOUR', 1);
define('DATE_PRECISION_10MINUTES', 2);
define('DATE_PRECISION_MINUTE', 3);
define('DATE_PRECISION_10SECONDS', 4);
define('DATE_PRECISION_SECOND', 5);
// }}}
// {{{ Class: Date_Calc
/**
* Calculates, manipulates and retrieves dates
*
* It does not rely on 32-bit system time stamps, so it works dates
* before 1970 and after 2038.
*
* @category Date and Time
* @package Date
* @author Monte Ohrt <monte@ispi.net>
* @author Daniel Convissor <danielc@php.net>
* @author C.A. Woodcock <c01234@netcomuk.co.uk>
* @copyright 1999-2007 Monte Ohrt, Pierre-Alain Joye, Daniel Convissor, C.A. Woodcock
* @license http://www.opensource.org/licenses/bsd-license.php
* BSD License
* @version Release: 1.5.0a1
* @link http://pear.php.net/package/Date
* @since Class available since Release 1.2
*/
class Date_Calc
{
// {{{ dateFormat()
/**
* Formats the date in the given format, much like strfmt()
*
* This function is used to alleviate the problem with 32-bit numbers for
* dates pre 1970 or post 2038, as strfmt() has on most systems.
* Most of the formatting options are compatible.
*
* Formatting options:
* <pre>
* %a abbreviated weekday name (Sun, Mon, Tue)
* %A full weekday name (Sunday, Monday, Tuesday)
* %b abbreviated month name (Jan, Feb, Mar)
* %B full month name (January, February, March)
* %d day of month (range 00 to 31)
* %e day of month, single digit (range 0 to 31)
* %E number of days since unspecified epoch (integer)
* (%E is useful for passing a date in a URL as
* an integer value. Then simply use
* daysToDate() to convert back to a date.)
* %j day of year (range 001 to 366)
* %m month as decimal number (range 1 to 12)
* %n newline character (\n)
* %t tab character (\t)
* %w weekday as decimal (0 = Sunday)
* %U week number of current year, first sunday as first week
* %y year as decimal (range 00 to 99)
* %Y year as decimal including century (range 0000 to 9999)
* %% literal '%'
* </pre>
*
* @param int $day the day of the month
* @param int $month the month
* @param int $year the year. Use the complete year instead of the
* abbreviated version. E.g. use 2005, not 05.
* @param string $format the format string
*
* @return string the date in the desired format
* @access public
* @static
*/
function dateFormat($day, $month, $year, $format)
{
if (!Date_Calc::isValidDate($day, $month, $year)) {
$year = Date_Calc::dateNow('%Y');
$month = Date_Calc::dateNow('%m');
$day = Date_Calc::dateNow('%d');
}
$output = '';
for ($strpos = 0; $strpos < strlen($format); $strpos++) {
$char = substr($format, $strpos, 1);
if ($char == '%') {
$nextchar = substr($format, $strpos + 1, 1);
switch($nextchar) {
case 'a':
$output .= Date_Calc::getWeekdayAbbrname($day, $month, $year);
break;
case 'A':
$output .= Date_Calc::getWeekdayFullname($day, $month, $year);
break;
case 'b':
$output .= Date_Calc::getMonthAbbrname($month);
break;
case 'B':
$output .= Date_Calc::getMonthFullname($month);
break;
case 'd':
$output .= sprintf('%02d', $day);
break;
case 'e':
$output .= $day;
break;
case 'E':
$output .= Date_Calc::dateToDays($day, $month, $year);
break;
case 'j':
$output .= Date_Calc::dayOfYear($day, $month, $year);
break;
case 'm':
$output .= sprintf('%02d', $month);
break;
case 'n':
$output .= "\n";
break;
case 't':
$output .= "\t";
break;
case 'w':
$output .= Date_Calc::dayOfWeek($day, $month, $year);
break;
case 'U':
$output .= Date_Calc::weekOfYear($day, $month, $year);
break;
case 'y':
$output .= sprintf('%0' .
($year < 0 ? '3' : '2') .
'd',
$year % 100);
break;
case "Y":
$output .= sprintf('%0' .
($year < 0 ? '5' : '4') .
'd',
$year);
break;
case '%':
$output .= '%';
break;
default:
$output .= $char.$nextchar;
}
$strpos++;
} else {
$output .= $char;
}
}
return $output;
}
// }}}
// {{{ dateNow()
/**
* Returns the current local date
*
* NOTE: This function retrieves the local date using strftime(),
* which may or may not be 32-bit safe on your system.
*
* @param string $format the string indicating how to format the output
*
* @return string the current date in the specified format
* @access public
* @static
*/
function dateNow($format = DATE_CALC_FORMAT)
{
return strftime($format, time());
}
// }}}
// {{{ getYear()
/**
* Returns the current local year in format CCYY
*
* @return string the current year in four digit format
* @access public
* @static
*/
function getYear()
{
return Date_Calc::dateNow('%Y');
}
// }}}
// {{{ getMonth()
/**
* Returns the current local month in format MM
*
* @return string the current month in two digit format
* @access public
* @static
*/
function getMonth()
{
return Date_Calc::dateNow('%m');
}
// }}}
// {{{ getDay()
/**
* Returns the current local day in format DD
*
* @return string the current day of the month in two digit format
* @access public
* @static
*/
function getDay()
{
return Date_Calc::dateNow('%d');
}
// }}}
// {{{ defaultCentury()
/**
* Turns a two digit year into a four digit year
*
* Return value depends on current year; the century chosen
* will be the one which forms the year that is closest
* to the current year. If the two possibilities are
* equidistant to the current year (i.e. 50 years in the past
* and 50 years in the future), then the past year is chosen.
*
* For example, if the current year is 2007:
* 03 - returns 2003
* 09 - returns 2009
* 56 - returns 2056 (closer to 2007 than 1956)
* 57 - returns 1957 (1957 and 2007 are equidistant, so previous century
* chosen)
* 58 - returns 1958
*
* @param int $year the 2 digit year
*
* @return int the 4 digit year
* @access public
* @static
*/
function defaultCentury($year)
{
$hn_century = intval(($hn_currentyear = date("Y")) / 100);
$hn_currentyear = $hn_currentyear % 100;
if ($year < 0 || $year >= 100)
$year = $year % 100;
if ($year - $hn_currentyear < -50)
return ($hn_century + 1) * 100 + $year;
else if ($year - $hn_currentyear < 50)
return $hn_century * 100 + $year;
else
return ($hn_century - 1) * 100 + $year;
}
// }}}
// {{{ getSecondsInYear()
/**
* Returns the total number of seconds in the given year
*
* This takes into account leap seconds.
*
* @param int $pn_year the year in four digit format
*
* @return int
* @access public
* @static
* @since Method available since Release 1.5.0
*/
function getSecondsInYear($pn_year)
{
$pn_year = intval($pn_year);
static $ha_leapseconds;
if (!isset($ha_leapseconds)) {
$ha_leapseconds = array(1972 => 2,
1973 => 1,
1974 => 1,
1975 => 1,
1976 => 1,
1977 => 1,
1978 => 1,
1979 => 1,
1981 => 1,
1982 => 1,
1983 => 1,
1985 => 1,
1987 => 1,
1989 => 1,
1990 => 1,
1992 => 1,
1993 => 1,
1994 => 1,
1995 => 1,
1997 => 1,
1998 => 1,
2005 => 1);
}
$ret = Date_Calc::daysInYear($pn_year) * 86400;
if (isset($ha_leapseconds[$pn_year])) {
return $ret + $ha_leapseconds[$pn_year];
} else {
return $ret;
}
}
// }}}
// {{{ getSecondsInMonth()
/**
* Returns the total number of seconds in the given month
*
* This takes into account leap seconds.
*
* @param int $pn_month the month
* @param int $pn_year the year in four digit format
*
* @return int
* @access public
* @static
* @since Method available since Release 1.5.0
*/
function getSecondsInMonth($pn_month, $pn_year)
{
$pn_month = intval($pn_month);
$pn_year = intval($pn_year);
static $ha_leapseconds;
if (!isset($ha_leapseconds)) {
$ha_leapseconds = array(1972 => array(6 => 1,
12 => 1),
1973 => array(12 => 1),
1974 => array(12 => 1),
1975 => array(12 => 1),
1976 => array(12 => 1),
1977 => array(12 => 1),
1978 => array(12 => 1),
1979 => array(12 => 1),
1981 => array(6 => 1),
1982 => array(6 => 1),
1983 => array(6 => 1),
1985 => array(6 => 1),
1987 => array(12 => 1),
1989 => array(12 => 1),
1990 => array(12 => 1),
1992 => array(6 => 1),
1993 => array(6 => 1),
1994 => array(6 => 1),
1995 => array(12 => 1),
1997 => array(6 => 1),
1998 => array(12 => 1),
2005 => array(12 => 1));
}
$ret = Date_Calc::daysInMonth($pn_month, $pn_year) * 86400;
if (isset($ha_leapseconds[$pn_year][$pn_month])) {
return $ret + $ha_leapseconds[$pn_year][$pn_month];
} else {
return $ret;
}
}
// }}}
// {{{ getSecondsInDay()
/**
* Returns the total number of seconds in the day of the given date
*
* This takes into account leap seconds.
*
* @param int $pn_day the day of the month
* @param int $pn_month the month
* @param int $pn_year the year in four digit format
*
* @return int
* @access public
* @static
* @since Method available since Release 1.5.0
*/
function getSecondsInDay($pn_day, $pn_month, $pn_year)
{
// Note to developers:
//
// The leap seconds listed here are a matter of historical fact,
// that is, it is known on which exact day they occurred.
// However, the implementation of the class as a whole depends
// on the fact that they always occur at the end of the month
// (although it is assumed that they could occur in any month,
// even though practically they only occur in June or December).
//
// Do not define a leap second on a day of the month other than
// the last day without altering the implementation of the
// functions that depend on this one.
//
// It is possible, though, to define an un-leap second (i.e. a skipped
// second (I do not know what they are called), or a number of
// consecutive leap seconds).
$pn_day = intval($pn_day);
$pn_month = intval($pn_month);
$pn_year = intval($pn_year);
static $ha_leapseconds;
if (!isset($ha_leapseconds)) {
$ha_leapseconds = array(1972 => array(6 => array(30 => 1),
12 => array(31 => 1)),
1973 => array(12 => array(31 => 1)),
1974 => array(12 => array(31 => 1)),
1975 => array(12 => array(31 => 1)),
1976 => array(12 => array(31 => 1)),
1977 => array(12 => array(31 => 1)),
1978 => array(12 => array(31 => 1)),
1979 => array(12 => array(31 => 1)),
1981 => array(6 => array(30 => 1)),
1982 => array(6 => array(30 => 1)),
1983 => array(6 => array(30 => 1)),
1985 => array(6 => array(30 => 1)),
1987 => array(12 => array(31 => 1)),
1989 => array(12 => array(31 => 1)),
1990 => array(12 => array(31 => 1)),
1992 => array(6 => array(30 => 1)),
1993 => array(6 => array(30 => 1)),
1994 => array(6 => array(30 => 1)),
1995 => array(12 => array(31 => 1)),
1997 => array(6 => array(30 => 1)),
1998 => array(12 => array(31 => 1)),
2005 => array(12 => array(31 => 1)));
}
if (isset($ha_leapseconds[$pn_year][$pn_month][$pn_day])) {
return 86400 + $ha_leapseconds[$pn_year][$pn_month][$pn_day];
} else {
return 86400;
}
}
// }}}
// {{{ getSecondsInHour()
/**
* Returns the total number of seconds in the hour of the given date
*
* This takes into account leap seconds.
*
* @param int $pn_day the day of the month
* @param int $pn_month the month
* @param int $pn_year the year in four digit format
* @param int $pn_hour the hour
*
* @return int
* @access public
* @static
*/
function getSecondsInHour($pn_day, $pn_month, $pn_year, $pn_hour)
{
if ($pn_hour < 23)
return 3600;
else
return Date_Calc::getSecondsInDay($pn_day, $pn_month, $pn_year) -
82800;
}
// }}}
// {{{ getSecondsInMinute()
/**
* Returns the total number of seconds in the minute of the given hour
*
* This takes into account leap seconds.
*
* @param int $pn_day the day of the month
* @param int $pn_month the month
* @param int $pn_year the year in four digit format
* @param int $pn_hour the hour
* @param int $pn_minute the minute
*
* @return int
* @access public
* @static
* @since Method available since Release 1.5.0
*/
function getSecondsInMinute($pn_day,
$pn_month,
$pn_year,
$pn_hour,
$pn_minute)
{
if ($pn_hour < 23 || $pn_minute < 59)
return 60;
else
return Date_Calc::getSecondsInDay($pn_day, $pn_month, $pn_year) -
86340;
}
// }}}
// {{{ secondsPastMidnight()
/**
* Returns the no of seconds since midnight (0-86399)
*
* @param int $pn_hour the hour of the day
* @param int $pn_minute the minute
* @param mixed $pn_second the second as integer or float
*
* @return mixed integer or float from 0-86399
* @access public
* @static
* @since Method available since Release 1.5.0
*/
function secondsPastMidnight($pn_hour, $pn_minute, $pn_second)
{
return 3600 * $pn_hour + 60 * $pn_minute + $pn_second;
}
// }}}
// {{{ secondsPastMidnightToTime()
/**
* Returns the time as an array (i.e. hour, minute, second)
*
* @param mixed $pn_seconds the no of seconds since midnight (0-86399)
*
* @return mixed array of hour, minute (both as integers), second (as
* integer or float, depending on parameter)
* @access public
* @static
* @since Method available since Release 1.5.0
*/
function secondsPastMidnightToTime($pn_seconds)
{
if ($pn_seconds >= 86400) {
return array(23, 59, $pn_seconds - 86340);
}
$hn_hour = intval($pn_seconds / 3600);
$hn_minute = intval(($pn_seconds - $hn_hour * 3600) / 60);
$hn_second = is_float($pn_seconds) ?
fmod($pn_seconds, 60) :
$pn_seconds % 60;
return array($hn_hour, $hn_minute, $hn_second);
}
// }}}
// {{{ secondsPastTheHour()
/**
* Returns the no of seconds since the last hour o'clock (0-3599)
*
* @param int $pn_minute the minute
* @param mixed $pn_second the second as integer or float
*
* @return mixed integer or float from 0-3599
* @access public
* @static
* @since Method available since Release 1.5.0
*/
function secondsPastTheHour($pn_minute, $pn_second)
{
return 60 * $pn_minute + $pn_second;
}
// }}}
// {{{ addHours()
/**
* Returns the date the specified no of hours from the given date
*
* To subtract hours use a negative value for the '$pn_hours' parameter
*
* @param int $pn_hours hours to add
* @param int $pn_day the day of the month
* @param int $pn_month the month
* @param int $pn_year the year
* @param int $pn_hour the hour
*
* @return array array of year, month, day, hour
* @access public
* @static
* @since Method available since Release 1.5.0
*/
function addHours($pn_hours, $pn_day, $pn_month, $pn_year, $pn_hour)
{
if ($pn_hours == 0)
return array((int) $pn_year,
(int) $pn_month,
(int) $pn_day,
(int) $pn_hour);
$hn_days = intval($pn_hours / 24);
$hn_hour = $pn_hour + $pn_hours % 24;
if ($hn_hour >= 24) {
++$hn_days;
$hn_hour -= 24;
} else if ($hn_hour < 0) {
--$hn_days;
$hn_hour += 24;
}
if ($hn_days == 0) {
$hn_year = $pn_year;
$hn_month = $pn_month;
$hn_day = $pn_day;
} else {
list($hn_year, $hn_month, $hn_day) =
explode(" ",
Date_Calc::addDays($hn_days,
$pn_day,
$pn_month,
$pn_year,
"%Y %m %d"));
}
return array((int) $hn_year, (int) $hn_month, (int) $hn_day, $hn_hour);
}
// }}}
// {{{ addMinutes()
/**
* Returns the date the specified no of minutes from the given date
*
* To subtract minutes use a negative value for the '$pn_minutes' parameter
*
* @param int $pn_minutes minutes to add
* @param int $pn_day the day of the month
* @param int $pn_month the month
* @param int $pn_year the year
* @param int $pn_hour the hour
* @param int $pn_minute the minute
*
* @return array array of year, month, day, hour, minute
* @access public
* @static
* @since Method available since Release 1.5.0
*/
function addMinutes($pn_minutes,
$pn_day,
$pn_month,
$pn_year,
$pn_hour,
$pn_minute)
{
if ($pn_minutes == 0)
return array((int) $pn_year,
(int) $pn_month,
(int) $pn_day,
(int) $pn_hour,
(int) $pn_minute);
$hn_hours = intval($pn_minutes / 60);
$hn_minute = $pn_minute + $pn_minutes % 60;
if ($hn_minute >= 60) {
++$hn_hours;
$hn_minute -= 60;
} else if ($hn_minute < 0) {
--$hn_hours;
$hn_minute += 60;
}
if ($hn_hours == 0) {
$hn_year = $pn_year;
$hn_month = $pn_month;
$hn_day = $pn_day;
$hn_hour = $pn_hour;
} else {
list($hn_year, $hn_month, $hn_day, $hn_hour) =
Date_Calc::addHours($hn_hours,
$pn_day,
$pn_month,
$pn_year,
$pn_hour);
}
return array($hn_year, $hn_month, $hn_day, $hn_hour, $hn_minute);
}
// }}}
// {{{ addSeconds()
/**
* Returns the date the specified no of seconds from the given date
*
* If leap seconds are specified to be counted, the passed time must be UTC.
* To subtract seconds use a negative value for the '$pn_seconds' parameter.
*
* N.B. the return type of the second part of the date is float if
* either '$pn_seconds' or '$pn_second' is a float; otherwise, it
* is integer.
*
* @param mixed $pn_seconds seconds to add as integer or float
* @param int $pn_day the day of the month
* @param int $pn_month the month
* @param int $pn_year the year
* @param int $pn_hour the hour
* @param int $pn_minute the minute
* @param mixed $pn_second the second as integer or float
* @param bool $pb_countleap whether to count leap seconds (defaults to
* DATE_COUNT_LEAP_SECONDS)
*
* @return array array of year, month, day, hour, minute, second
* @access public
* @static
* @since Method available since Release 1.5.0
*/
function addSeconds($pn_seconds,
$pn_day,
$pn_month,
$pn_year,
$pn_hour,
$pn_minute,
$pn_second,
$pb_countleap = DATE_COUNT_LEAP_SECONDS)
{
if ($pn_seconds == 0)
return array((int) $pn_year,
(int) $pn_month,
(int) $pn_day,
(int) $pn_hour,
(int) $pn_minute,
$pn_second);
if ($pb_countleap) {
$hn_seconds = $pn_seconds;
$hn_day = (int) $pn_day;
$hn_month = (int) $pn_month;
$hn_year = (int) $pn_year;
$hn_hour = (int) $pn_hour;
$hn_minute = (int) $pn_minute;
$hn_second = $pn_second;
$hn_days = Date_Calc::dateToDays($pn_day,
$pn_month,
$pn_year);
$hn_secondsofmonth = 86400 * ($hn_days -
Date_Calc::firstDayOfMonth($pn_month,
$pn_year)) +
Date_Calc::secondsPastMidnight($pn_hour,
$pn_minute,
$pn_second);
if ($hn_seconds > 0) {
// Advance to end of month:
//
if ($hn_secondsofmonth != 0 &&
$hn_secondsofmonth + $hn_seconds >=
($hn_secondsinmonth =
Date_Calc::getSecondsInMonth($hn_month, $hn_year))) {
$hn_seconds -= $hn_secondsinmonth - $hn_secondsofmonth;
$hn_secondsofmonth = 0;
list($hn_year, $hn_month) =
Date_Calc::nextMonth($hn_month, $hn_year);
$hn_day = Date_Calc::getFirstDayOfMonth($hn_month,
$hn_year);
$hn_hour = $hn_minute = $hn_second = 0;
}
// Advance to end of year:
//
if ($hn_secondsofmonth == 0 &&
$hn_month != Date_Calc::getFirstMonthOfYear($hn_year)) {
while ($hn_year == $pn_year &&
$hn_seconds >= ($hn_secondsinmonth =
Date_Calc::getSecondsInMonth($hn_month,
$hn_year))) {
$hn_seconds -= $hn_secondsinmonth;
list($hn_year, $hn_month) =
Date_Calc::nextMonth($hn_month, $hn_year);
$hn_day = Date_Calc::getFirstDayOfMonth($hn_month,
$hn_year);
}
}
if ($hn_secondsofmonth == 0) {
// Add years:
//
if ($hn_month == Date_Calc::getFirstMonthOfYear($hn_year)) {
while ($hn_seconds >= ($hn_secondsinyear =
Date_Calc::getSecondsInYear($hn_year))) {
$hn_seconds -= $hn_secondsinyear;
$hn_month = Date_Calc::getFirstMonthOfYear(++$hn_year);
$hn_day = Date_Calc::getFirstDayOfMonth($hn_month,
$hn_year);
}
}
// Add months:
//
while ($hn_seconds >= ($hn_secondsinmonth =
Date_Calc::getSecondsInMonth($hn_month, $hn_year))) {
$hn_seconds -= $hn_secondsinmonth;
list($hn_year, $hn_month) =
Date_Calc::nextMonth($hn_month, $hn_year);
$hn_day = Date_Calc::getFirstDayOfMonth($hn_month, $hn_year);
}
}
} else {
//
// (if $hn_seconds < 0)
// Go back to start of month:
//
if ($hn_secondsofmonth != 0 &&
-$hn_seconds >= $hn_secondsofmonth) {
$hn_seconds += $hn_secondsofmonth;
$hn_secondsofmonth = 0;
$hn_day = Date_Calc::getFirstDayOfMonth($hn_month,
$hn_year);
$hn_hour = $hn_minute = $hn_second = 0;
}
// Go back to start of year:
//
if ($hn_secondsofmonth == 0) {
while ($hn_month !=
Date_Calc::getFirstMonthOfYear($hn_year)) {
list($hn_year, $hn_prevmonth) =
Date_Calc::prevMonth($hn_month, $hn_year);
if (-$hn_seconds >= ($hn_secondsinmonth =
Date_Calc::getSecondsInMonth($hn_prevmonth,
$hn_year))) {
$hn_seconds += $hn_secondsinmonth;
$hn_month = $hn_prevmonth;
$hn_day = Date_Calc::getFirstDayOfMonth($hn_month,
$hn_year);
} else {
break;
}
}
}
if ($hn_secondsofmonth == 0) {
// Subtract years:
//
if ($hn_month == Date_Calc::getFirstMonthOfYear($hn_year)) {
while (-$hn_seconds >= ($hn_secondsinyear =
Date_Calc::getSecondsInYear($hn_year - 1))) {
$hn_seconds += $hn_secondsinyear;
$hn_month = Date_Calc::getFirstMonthOfYear(--$hn_year);
$hn_day = Date_Calc::getFirstDayOfMonth($hn_month,
$hn_year);
}
}
// Subtract months:
//
list($hn_pmyear, $hn_prevmonth) =
Date_Calc::prevMonth($hn_month, $hn_year);
while (-$hn_seconds >= ($hn_secondsinmonth =
Date_Calc::getSecondsInMonth($hn_prevmonth,
$hn_pmyear))) {
$hn_seconds += $hn_secondsinmonth;
$hn_year = $hn_pmyear;
$hn_month = $hn_prevmonth;
$hn_day = Date_Calc::getFirstDayOfMonth($hn_month,
$hn_year);
list($hn_pmyear, $hn_prevmonth) =
Date_Calc::prevMonth($hn_month, $hn_year);
}
}
}
if ($hn_seconds < 0 && $hn_secondsofmonth == 0) {
list($hn_year, $hn_month) =
Date_Calc::prevMonth($hn_month, $hn_year);
$hn_day = Date_Calc::getFirstDayOfMonth($hn_month, $hn_year);
$hn_seconds += Date_Calc::getSecondsInMonth($hn_month, $hn_year);
}
$hn_seconds += Date_Calc::secondsPastMidnight($hn_hour,
$hn_minute,
$hn_second);
if ($hn_seconds < 0) {
$hn_daysadd = intval($hn_seconds / 86400) - 1;
} else if ($hn_seconds < 86400) {
$hn_daysadd = 0;
} else {
$hn_daysadd = intval($hn_seconds / 86400) - 1;
}
if ($hn_daysadd != 0) {
list($hn_year, $hn_month, $hn_day) =
explode(" ",
Date_Calc::addDays($hn_daysadd,
$hn_day,
$hn_month,
$hn_year,
"%Y %m %d"));
$hn_seconds -= $hn_daysadd * 86400;
}
$hn_secondsinday = Date_Calc::getSecondsInDay($hn_day,
$hn_month,
$hn_year);
if ($hn_seconds >= $hn_secondsinday) {
list($hn_year, $hn_month, $hn_day) =
explode(" ",
Date_Calc::addDays(1,
$hn_day,
$hn_month,
$hn_year,
"%Y %m %d"));
$hn_seconds -= $hn_secondsinday;
}
list($hn_hour, $hn_minute, $hn_second) =
Date_Calc::secondsPastMidnightToTime($hn_seconds);
return array((int) $hn_year,
(int) $hn_month,
(int) $hn_day,
$hn_hour,
$hn_minute,
$hn_second);
} else {
// Assume every day has 86400 seconds exactly (ignore leap seconds):
//
$hn_minutes = intval($pn_seconds / 60);
if (is_float($pn_seconds)) {
$hn_second = $pn_second + fmod($pn_seconds, 60);
} else {
$hn_second = $pn_second + $pn_seconds % 60;
}
if ($hn_second >= 60) {
++$hn_minutes;
$hn_second -= 60;
} else if ($hn_second < 0) {
--$hn_minutes;
$hn_second += 60;
}
if ($hn_minutes == 0) {
$hn_year = $pn_year;
$hn_month = $pn_month;
$hn_day = $pn_day;
$hn_hour = $pn_hour;
$hn_minute = $pn_minute;
} else {
list($hn_year, $hn_month, $hn_day, $hn_hour, $hn_minute) =
Date_Calc::addMinutes($hn_minutes,
$pn_day,
$pn_month,
$pn_year,
$pn_hour,
$pn_minute);
}
return array($hn_year,
$hn_month,
$hn_day,
$hn_hour,
$hn_minute,
$hn_second);
}
}
// }}}
// {{{ dateToDays()
/**
* Converts a date in the proleptic Gregorian calendar to the no of days
* since 24th November, 4714 B.C.
*
* Returns the no of days since Monday, 24th November, 4714 B.C. in the
* proleptic Gregorian calendar (which is 24th November, -4713 using
* 'Astronomical' year numbering, and 1st January, 4713 B.C. in the
* proleptic Julian calendar). This is also the first day of the 'Julian
* Period' proposed by Joseph Scaliger in 1583, and the number of days
* since this date is known as the 'Julian Day'. (It is not directly
* to do with the Julian calendar, although this is where the name
* is derived from.)
*
* The algorithm is valid for all years (positive and negative), and
* also for years preceding 4714 B.C.
*
* @param int $day the day of the month
* @param int $month the month
* @param int $year the year (using 'Astronomical' year numbering)
*
* @return int the number of days since 24th November, 4714 B.C.
* @access public
* @static
*/
function dateToDays($day, $month, $year)
{
if ($month > 2) {
// March = 0, April = 1, ..., December = 9,
// January = 10, February = 11
$month -= 3;
} else {
$month += 9;
--$year;
}
$hb_negativeyear = $year < 0;
$century = intval($year / 100);
$year = $year % 100;
if ($hb_negativeyear) {
// Subtract 1 because year 0 is a leap year;
// And N.B. that we must treat the leap years as occurring
// one year earlier than they do, because for the purposes
// of calculation, the year starts on 1st March:
//
return intval((14609700 * $century + ($year == 0 ? 1 : 0)) / 400) +
intval((1461 * $year + 1) / 4) +
intval((153 * $month + 2) / 5) +
$day + 1721118;
} else {
return intval(146097 * $century / 4) +
intval(1461 * $year / 4) +
intval((153 * $month + 2) / 5) +
$day + 1721119;
}
}
// }}}
// {{{ daysToDate()
/**
* Converts no of days since 24th November, 4714 B.C. (in the proleptic
* Gregorian calendar, which is year -4713 using 'Astronomical' year
* numbering) to Gregorian calendar date
*
* Returned date belongs to the proleptic Gregorian calendar, using
* 'Astronomical' year numbering.
*
* The algorithm is valid for all years (positive and negative), and
* also for years preceding 4714 B.C. (i.e. for negative 'Julian Days'),
* and so the only limitation is platform-dependent (for 32-bit systems
* the maximum year would be something like about 1,465,190 A.D.).
*
* N.B. Monday, 24th November, 4714 B.C. is Julian Day '0'.
*
* @param int $days the number of days since 24th November, 4714 B.C.
* @param string $format the string indicating how to format the output
*
* @return string the date in the desired format
* @access public
* @static
*/
function daysToDate($days, $format = DATE_CALC_FORMAT)
{
$days = intval($days);
$days -= 1721119;
$century = floor((4 * $days - 1) / 146097);
$days = floor(4 * $days - 1 - 146097 * $century);
$day = floor($days / 4);
$year = floor((4 * $day + 3) / 1461);
$day = floor(4 * $day + 3 - 1461 * $year);
$day = floor(($day + 4) / 4);
$month = floor((5 * $day - 3) / 153);
$day = floor(5 * $day - 3 - 153 * $month);
$day = floor(($day + 5) / 5);
$year = $century * 100 + $year;
if ($month < 10) {
$month +=3;
} else {
$month -=9;
++$year;
}
return Date_Calc::dateFormat($day, $month, $year, $format);
}
// }}}
// {{{ getMonths()
/**
* Returns array of the month numbers, in order, for the given year
*
* @param int $pn_year the year (using 'Astronomical' year numbering)
*
* @return array array of integer month numbers, in order
* @access public
* @static
* @since Method available since Release 1.5.0
*/
function getMonths($pn_year)
{
// N.B. Month numbers can be skipped but not duplicated:
//
return array(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12);
}
// }}}
// {{{ getMonthNames()
/**
* Returns an array of month names
*
* Used to take advantage of the setlocale function to return
* language specific month names.
*
* TODO: cache values to some global array to avoid performance
* hits when called more than once.
*
* @param int $pb_abbreviated whether to return the abbreviated form of the
* months
*
* @return array associative array of integer month numbers, in
* order, to month names
* @access public
* @static
*/
function getMonthNames($pb_abbreviated = false)
{
$ret = array();
foreach (Date_Calc::getMonths(2001) as $i) {
$ret[$i] = strftime($pb_abbreviated ? '%b' : '%B',
mktime(0, 0, 0, $i, 1, 2001));
}
return $ret;
}
// }}}
// {{{ prevMonth()
/**
* Returns month and year of previous month
*
* @param int $pn_month the month
* @param int $pn_year the year (using 'Astronomical' year numbering)
*
* @return array array of year, month as integers
* @access public
* @static
* @since Method available since Release 1.5.0
*/
function prevMonth($pn_month, $pn_year)
{
$ha_months = Date_Calc::getMonths($pn_year);
$hn_monthkey = array_search($pn_month, $ha_months);
if (array_key_exists($hn_monthkey - 1, $ha_months)) {
return array((int) $pn_year, $ha_months[$hn_monthkey - 1]);
} else {
$ha_months = Date_Calc::getMonths($pn_year - 1);
return array($pn_year - 1, end($ha_months));
}
}
// }}}
// {{{ nextMonth()
/**
* Returns month and year of next month
*
* @param int $pn_month the month
* @param int $pn_year the year (using 'Astronomical' year numbering)
*
* @return array array of year, month as integers
* @access public
* @static
* @since Method available since Release 1.5.0
*/
function nextMonth($pn_month, $pn_year)
{
$ha_months = Date_Calc::getMonths($pn_year);
$hn_monthkey = array_search($pn_month, $ha_months);
if (array_key_exists($hn_monthkey + 1, $ha_months)) {
return array((int) $pn_year, $ha_months[$hn_monthkey + 1]);
} else {
$ha_months = Date_Calc::getMonths($pn_year + 1);
return array($pn_year + 1, $ha_months[0]);
}
}
// }}}
// {{{ addMonthsToDays()
/**
* Returns 'Julian Day' of the date the specified no of months
* from the given date
*
* To subtract months use a negative value for the '$pn_months'
* parameter
*
* @param int $pn_months months to add
* @param int $pn_days 'Julian Day', i.e. the no of days since 1st
* January, 4713 B.C.
*
* @return int 'Julian Day', i.e. the no of days since 1st January,
* 4713 B.C.
* @access public
* @static
* @since Method available since Release 1.5.0
*/
function addMonthsToDays($pn_months, $pn_days)
{
if ($pn_months == 0)
return (int) $pn_days;
list($hn_year, $hn_month, $hn_day) =
explode(" ", Date_Calc::daysToDate($pn_days, "%Y %m %d"));
$hn_retmonth = $hn_month + $pn_months % 12;
$hn_retyear = $hn_year + intval($pn_months / 12);
if ($hn_retmonth < 1) {
$hn_retmonth += 12;
--$hn_retyear;
} else if ($hn_retmonth > 12) {
$hn_retmonth -= 12;
++$hn_retyear;
}
if (Date_Calc::isValidDate($hn_day, $hn_retmonth, $hn_retyear))
return Date_Calc::dateToDays($hn_day, $hn_retmonth, $hn_retyear);
// Calculate days since first of month:
//
$hn_dayoffset = $pn_days -
Date_Calc::firstDayOfMonth($hn_month, $hn_year);
$hn_retmonthfirstday = Date_Calc::firstDayOfMonth($hn_retmonth,
$hn_retyear);
$hn_retmonthlastday = Date_Calc::lastDayOfMonth($hn_retmonth,
$hn_retyear);
if ($hn_dayoffset > $hn_retmonthlastday - $hn_retmonthfirstday) {
return $hn_retmonthlastday;
} else {
return $hn_retmonthfirstday + $hn_dayoffset;
}
}
// }}}
// {{{ addMonths()
/**
* Returns the date the specified no of months from the given date
*
* To subtract months use a negative value for the '$pn_months'
* parameter
*
* @param int $pn_months months to add
* @param int $pn_day the day of the month, default is current local
* day
* @param int $pn_month the month, default is current local month
* @param int $pn_year the year in four digit format, default is
* current local year
* @param string $ps_format string specifying how to format the output
*
* @return string the date in the desired format
* @access public
* @static
* @since Method available since Release 1.5.0
*/
function addMonths($pn_months,
$pn_day,
$pn_month,
$pn_year,
$ps_format = DATE_CALC_FORMAT)
{
if (is_null($pn_year)) {
$pn_year = Date_Calc::dateNow('%Y');
}
if (empty($pn_month)) {
$pn_month = Date_Calc::dateNow('%m');
}
if (empty($pn_day)) {
$pn_day = Date_Calc::dateNow('%d');
}
if ($pn_months == 0)
return Date_Calc::dateFormat($pn_day,
$pn_month,
$pn_year,
$ps_format);
$hn_days = Date_Calc::dateToDays($pn_day, $pn_month, $pn_year);
return Date_Calc::daysToDate(Date_Calc::addMonthsToDays($pn_months,
$hn_days),
$ps_format);
}
// }}}
// {{{ addYearsToDays()
/**
* Returns 'Julian Day' of the date the specified no of years
* from the given date
*
* To subtract years use a negative value for the '$pn_years'
* parameter
*
* @param int $pn_years years to add
* @param int $pn_days 'Julian Day', i.e. the no of days since 1st January,
* 4713 B.C.
*
* @return int 'Julian Day', i.e. the no of days since 1st January,
* 4713 B.C.
* @access public
* @static
* @since Method available since Release 1.5.0
*/
function addYearsToDays($pn_years, $pn_days)
{
if ($pn_years == 0)
return (int) $pn_days;
list($hn_year, $hn_month, $hn_day) =
explode(" ", Date_Calc::daysToDate($pn_days, "%Y %m %d"));
$hn_retyear = $hn_year + $pn_years;
if (Date_Calc::isValidDate($hn_day, $hn_month, $hn_retyear))
return Date_Calc::dateToDays($hn_day, $hn_month, $hn_retyear);
$ha_months = Date_Calc::getMonths($hn_retyear);
if (in_array($hn_month, $ha_months)) {
$hn_retmonth = $hn_month;
// Calculate days since first of month:
//
$hn_dayoffset = $pn_days - Date_Calc::firstDayOfMonth($hn_month,
$hn_year);
$hn_retmonthfirstday = Date_Calc::firstDayOfMonth($hn_retmonth,
$hn_retyear);
$hn_retmonthlastday = Date_Calc::lastDayOfMonth($hn_retmonth,
$hn_retyear);
if ($hn_dayoffset > $hn_retmonthlastday - $hn_retmonthfirstday) {
return $hn_retmonthlastday;
} else {
return $hn_retmonthfirstday + $hn_dayoffset;
}
} else {
// Calculate days since first of year:
//
$hn_dayoffset = $pn_days - Date_Calc::firstDayOfYear($hn_year);
$hn_retyearfirstday = Date_Calc::firstDayOfYear($hn_retyear);
$hn_retyearlastday = Date_Calc::lastDayOfYear($hn_retyear);
if ($hn_dayoffset > $hn_retyearlastday - $hn_retyearfirstday) {
return $hn_retyearlastday;
} else {
return $hn_retyearfirstday + $hn_dayoffset;
}
}
}
// }}}
// {{{ addYears()
/**
* Returns the date the specified no of years from the given date
*
* To subtract years use a negative value for the '$pn_years'
* parameter
*
* @param int $pn_years years to add
* @param int $pn_day the day of the month, default is current local
* day
* @param int $pn_month the month, default is current local month
* @param int $pn_year the year in four digit format, default is
* current local year
* @param string $ps_format string specifying how to format the output
*
* @return string the date in the desired format
* @access public
* @static
* @since Method available since Release 1.5.0
*/
function addYears($pn_years,
$pn_day,
$pn_month,
$pn_year,
$ps_format = DATE_CALC_FORMAT)
{
if (is_null($pn_year)) {
$pn_year = Date_Calc::dateNow('%Y');
}
if (empty($pn_month)) {
$pn_month = Date_Calc::dateNow('%m');
}
if (empty($pn_day)) {
$pn_day = Date_Calc::dateNow('%d');
}
if ($pn_years == 0)
return Date_Calc::dateFormat($pn_day,
$pn_month,
$pn_year,
$ps_format);
$hn_days = Date_Calc::dateToDays($pn_day, $pn_month, $pn_year);
return Date_Calc::daysToDate(Date_Calc::addYearsToDays($pn_years,
$hn_days),
$ps_format);
}
// }}}
// {{{ addDays()
/**
* Returns the date the specified no of days from the given date
*
* To subtract days use a negative value for the '$pn_days' parameter
*
* @param int $pn_days days to add
* @param int $pn_day the day of the month, default is current local
* day
* @param int $pn_month the month, default is current local month
* @param int $pn_year the year in four digit format, default is
* current local year
* @param string $ps_format string specifying how to format the output
*
* @return string the date in the desired format
* @access public
* @static
* @since Method available since Release 1.5.0
*/
function addDays($pn_days,
$pn_day,
$pn_month,
$pn_year,
$ps_format = DATE_CALC_FORMAT)
{
if (is_null($pn_year)) {
$pn_year = Date_Calc::dateNow('%Y');
}
if (empty($pn_month)) {
$pn_month = Date_Calc::dateNow('%m');
}
if (empty($pn_day)) {
$pn_day = Date_Calc::dateNow('%d');
}
if ($pn_days == 0)
return Date_Calc::dateFormat($pn_day,
$pn_month,
$pn_year,
$ps_format);
return Date_Calc::daysToDate(Date_Calc::dateToDays($pn_day,
$pn_month,
$pn_year) +
$pn_days,
$ps_format);
}
// }}}
// {{{ getFirstDayOfMonth()
/**
* Returns first day of the specified month of specified year as integer
*
* @param int $pn_month the month
* @param int $pn_year the year (using 'Astronomical' year numbering)
*
* @return int number of first day of month
* @access public
* @static
* @since Method available since Release 1.5.0
*/
function getFirstDayOfMonth($pn_month, $pn_year)
{
return 1;
}
// }}}
// {{{ getLastDayOfMonth()
/**
* Returns last day of the specified month of specified year as integer
*
* @param int $pn_month the month
* @param int $pn_year the year (using 'Astronomical' year numbering)
*
* @return int number of last day of month
* @access public
* @static
* @since Method available since Release 1.5.0
*/
function getLastDayOfMonth($pn_month, $pn_year)
{
return Date_Calc::daysInMonth($pn_month, $pn_year);
}
// }}}
// {{{ firstDayOfMonth()
/**
* Returns the Julian Day of the first day of the month of the specified
* year (i.e. the no of days since 24th November, 4714 B.C.)
*
* @param int $pn_month the month
* @param int $pn_year the year (using 'Astronomical' year numbering)
*
* @return integer the number of days since 24th November, 4714 B.C.
* @access public
* @static
* @since Method available since Release 1.5.0
*/
function firstDayOfMonth($pn_month, $pn_year)
{
return Date_Calc::dateToDays(Date_Calc::getFirstDayOfMonth($pn_month,
$pn_year),
$pn_month,
$pn_year);
}
// }}}
// {{{ lastDayOfMonth()
/**
* Returns the Julian Day of the last day of the month of the specified
* year (i.e. the no of days since 24th November, 4714 B.C.)
*
* @param int $pn_month the month
* @param int $pn_year the year (using 'Astronomical' year numbering)
*
* @return integer the number of days since 24th November, 4714 B.C.
* @access public
* @static
* @since Method available since Release 1.5.0
*/
function lastDayOfMonth($pn_month, $pn_year)
{
list($hn_nmyear, $hn_nextmonth) = Date_Calc::nextMonth($pn_month,
$pn_year);
return Date_Calc::firstDayOfMonth($hn_nextmonth, $hn_nmyear) - 1;
}
// }}}
// {{{ getFirstMonthOfYear()
/**
* Returns first month of specified year as integer
*
* @param int $pn_year the year (using 'Astronomical' year numbering)
*
* @return int number of first month of year
* @access public
* @static
* @since Method available since Release 1.5.0
*/
function getFirstMonthOfYear($pn_year)
{
$ha_months = Date_Calc::getMonths($pn_year);
return $ha_months[0];
}
// }}}
// {{{ firstDayOfYear()
/**
* Returns the Julian Day of the first day of the year (i.e. the no of
* days since 24th November, 4714 B.C.)
*
* @param int $pn_year the year (using 'Astronomical' year numbering)
*
* @return integer the number of days since 24th November, 4714 B.C.
* @access public
* @static
* @since Method available since Release 1.5.0
*/
function firstDayOfYear($pn_year)
{
return Date_Calc::firstDayOfMonth(Date_Calc::getFirstMonthOfYear($pn_year),
$pn_year);
}
// }}}
// {{{ lastDayOfYear()
/**
* Returns the Julian Day of the last day of the year (i.e. the no of
* days since 24th November, 4714 B.C.)
*
* @param int $pn_year the year (using 'Astronomical' year numbering)
*
* @return integer the number of days since 24th November, 4714 B.C.
* @access public
* @static
* @since Method available since Release 1.5.0
*/
function lastDayOfYear($pn_year)
{
return Date_Calc::firstDayOfYear($pn_year + 1) - 1;
}
// }}}
// {{{ dateToDaysJulian()
/**
* Converts a date in the proleptic Julian calendar to the no of days
* since 1st January, 4713 B.C.
*
* Returns the no of days since Monday, 1st January, 4713 B.C. in the
* proleptic Julian calendar (which is 1st January, -4712 using
* 'Astronomical' year numbering, and 24th November, 4713 B.C. in the
* proleptic Gregorian calendar). This is also the first day of the 'Julian
* Period' proposed by Joseph Scaliger in 1583, and the number of days
* since this date is known as the 'Julian Day'. (It is not directly
* to do with the Julian calendar, although this is where the name
* is derived from.)
*
* The algorithm is valid for all years (positive and negative), and
* also for years preceding 4713 B.C.
*
* @param int $day the day of the month
* @param int $month the month
* @param int $year the year (using 'Astronomical' year numbering)
*
* @return int the number of days since 1st January, 4713 B.C.
* @access public
* @static
* @since Method available since Release 1.5.0
*/
function dateToDaysJulian($day, $month, $year)
{
if ($month > 2) {
// March = 0, April = 1, ..., December = 9,
// January = 10, February = 11
$month -= 3;
} else {
$month += 9;
--$year;
}
$hb_negativeyear = $year < 0;
if ($hb_negativeyear) {
// Subtract 1 because year 0 is a leap year;
// And N.B. that we must treat the leap years as occurring
// one year earlier than they do, because for the purposes
// of calculation, the year starts on 1st March:
//
return intval((1461 * $year + 1) / 4) +
intval((153 * $month + 2) / 5) +
$day + 1721116;
} else {
return intval(1461 * $year / 4) +
floor((153 * $month + 2) / 5) +
$day + 1721117;
}
}
// }}}
// {{{ daysToDateJulian()
/**
* Converts no of days since 1st January, 4713 B.C. (in the proleptic
* Julian calendar, which is year -4712 using 'Astronomical' year
* numbering) to Julian calendar date
*
* Returned date belongs to the proleptic Julian calendar, using
* 'Astronomical' year numbering.
*
* @param int $days the number of days since 1st January, 4713 B.C.
* @param string $format the string indicating how to format the output
*
* @return string the date in the desired format
* @access public
* @static
* @since Method available since Release 1.5.0
*/
function daysToDateJulian($days, $format = DATE_CALC_FORMAT)
{
$days = intval($days);
$days -= 1721117;
$days = floor(4 * $days - 1);
$day = floor($days / 4);
$year = floor((4 * $day + 3) / 1461);
$day = floor(4 * $day + 3 - 1461 * $year);
$day = floor(($day + 4) / 4);
$month = floor((5 * $day - 3) / 153);
$day = floor(5 * $day - 3 - 153 * $month);
$day = floor(($day + 5) / 5);
if ($month < 10) {
$month +=3;
} else {
$month -=9;
++$year;
}
return Date_Calc::dateFormat($day, $month, $year, $format);
}
// }}}
// {{{ isoWeekDate()
/**
* Returns array defining the 'ISO Week Date' as defined in ISO 8601
*
* Expects a date in the proleptic Gregorian calendar using 'Astronomical'
* year numbering, that is, with a year 0. Algorithm is valid for all
* years (positive and negative).
*
* N.B. the ISO week day no for Sunday is defined as 7, whereas this
* class and its related functions defines Sunday as 0.
*
* @param int $pn_day the day of the month
* @param int $pn_month the month
* @param int $pn_year the year
*
* @return array array of ISO Year, ISO Week No, ISO Day No as
* integers
* @access public
* @static
* @since Method available since Release 1.5.0
*/
function isoWeekDate($pn_day = 0, $pn_month = 0, $pn_year = null)
{
if (is_null($pn_year)) {
$pn_year = Date_Calc::dateNow('%Y');
}
if (empty($pn_month)) {
$pn_month = Date_Calc::dateNow('%m');
}
if (empty($pn_day)) {
$pn_day = Date_Calc::dateNow('%d');
}
$hn_jd = Date_Calc::dateToDays($pn_day, $pn_month, $pn_year);
$hn_wd = Date_Calc::daysToDayOfWeek($hn_jd);
if ($hn_wd == 0)
$hn_wd = 7;
$hn_jd1 = Date_Calc::firstDayOfYear($pn_year);
$hn_day = $hn_jd - $hn_jd1 + 1;
if ($hn_wd <= $hn_jd - Date_Calc::lastDayOfYear($pn_year) + 3) {
// ISO week is the first week of the next ISO year:
//
$hn_year = $pn_year + 1;
$hn_isoweek = 1;
} else {
switch ($hn_wd1 = Date_Calc::daysToDayOfWeek($hn_jd1)) {
case 1:
case 2:
case 3:
case 4:
// Monday - Thursday:
//
$hn_year = $pn_year;
$hn_isoweek = floor(($hn_day + $hn_wd1 - 2) / 7) + 1;
break;
case 0:
$hn_wd1 = 7;
case 5:
case 6:
// Friday - Sunday:
//
if ($hn_day <= 8 - $hn_wd1) {
// ISO week is the last week of the previous ISO year:
//
list($hn_year, $hn_lastmonth, $hn_lastday) =
explode(" ",
Date_Calc::daysToDate($hn_jd1 - 1, "%Y %m %d"));
list($hn_year, $hn_isoweek, $hn_pisoday) =
Date_Calc::isoWeekDate($hn_lastday,
$hn_lastmonth,
$hn_year);
} else {
$hn_year = $pn_year;
$hn_isoweek = floor(($hn_day + $hn_wd1 - 9) / 7) + 1;
}
break;
}
}
return array((int) $hn_year, (int) $hn_isoweek, (int) $hn_wd);
}
// }}}
// {{{ gregorianToISO()
/**
* Converts from Gregorian Year-Month-Day to ISO Year-WeekNumber-WeekDay
*
* Uses ISO 8601 definitions.
*
* @param int $day the day of the month
* @param int $month the month
* @param int $year the year. Use the complete year instead of the
* abbreviated version. E.g. use 2005, not 05.
*
* @return string the date in ISO Year-WeekNumber-WeekDay format
* @access public
* @static
*/
function gregorianToISO($day, $month, $year)
{
list($yearnumber, $weeknumber, $weekday) =
Date_Calc::isoWeekDate($day, $month, $year);
return sprintf("%04d", $yearnumber) .
'-' .
sprintf("%02d", $weeknumber) .
'-' .
$weekday;
}
// }}}
// {{{ weekOfYear4th()
/**
* Returns week of the year counting week 1 as the week that contains 4th
* January
*
* Week 1 is determined to be the week that includes the 4th January, and
* therefore can be defined as the first week of the year that has at least
* 4 days. The previous week is counted as week 52 or 53 of the previous
* year. Note that this definition depends on which day is the first day of
* the week, and that if this is not passed as the '$pn_firstdayofweek'
* parameter, the default is assumed.
*
* Note also that the last day week of the year is likely to extend into
* the following year, except in the case that the last day of the week
* falls on 31st December.
*
* Also note that this is very similar to the ISO week returned by
* 'isoWeekDate()', the difference being that the ISO week always has
* 7 days, and if the 4th of January is a Friday, for example,
* ISO week 1 would start on Monday, 31st December in the previous year,
* whereas the week defined by this function would start on 1st January,
* but would be only 6 days long. Of course you can also set the day
* of the week, whereas the ISO week starts on a Monday by definition.
*
* Returned week is an integer from 1 to 53.
*
* @param int $pn_day the day of the month, default is current
* local day
* @param int $pn_month the month, default is current local month
* @param int $pn_year the year in four digit format, default is
* current local year
* @param int $pn_firstdayofweek optional integer specifying the first day
* of the week
*
* @return array array of year, week no as integers
* @access public
* @static
* @since Method available since Release 1.5.0
*/
function weekOfYear4th($pn_day = 0,
$pn_month = 0,
$pn_year = null,
$pn_firstdayofweek = DATE_CALC_BEGIN_WEEKDAY)
{
if (is_null($pn_year)) {
$pn_year = Date_Calc::dateNow('%Y');
}
if (empty($pn_month)) {
$pn_month = Date_Calc::dateNow('%m');
}
if (empty($pn_day)) {
$pn_day = Date_Calc::dateNow('%d');
}
$hn_wd1 = Date_Calc::daysToDayOfWeek(Date_Calc::firstDayOfYear($pn_year));
$hn_day = Date_Calc::dayOfYear($pn_day, $pn_month, $pn_year);
$hn_week = floor(($hn_day +
(10 + $hn_wd1 - $pn_firstdayofweek) % 7 +
3) / 7);
if ($hn_week > 0) {
$hn_year = $pn_year;
} else {
// Week number is the last week of the previous year:
//
list($hn_year, $hn_lastmonth, $hn_lastday) =
explode(" ",
Date_Calc::daysToDate(Date_Calc::lastDayOfYear($pn_year - 1),
"%Y %m %d"));
list($hn_year, $hn_week) =
Date_Calc::weekOfYear4th($hn_lastday,
$hn_lastmonth,
$hn_year,
$pn_firstdayofweek);
}
return array((int) $hn_year, (int) $hn_week);
}
// }}}
// {{{ weekOfYear7th()
/**
* Returns week of the year counting week 1 as the week that contains 7th
* January
*
* Week 1 is determined to be the week that includes the 7th January, and
* therefore can be defined as the first full week of the year. The
* previous week is counted as week 52 or 53 of the previous year. Note
* that this definition depends on which day is the first day of the week,
* and that if this is not passed as the '$pn_firstdayofweek' parameter, the
* default is assumed.
*
* Note also that the last day week of the year is likely to extend into
* the following year, except in the case that the last day of the week
* falls on 31st December.
*
* Returned week is an integer from 1 to 53.
*
* @param int $pn_day the day of the month, default is current
* local day
* @param int $pn_month the month, default is current local month
* @param int $pn_year the year in four digit format, default is
* current local year
* @param int $pn_firstdayofweek optional integer specifying the first day
* of the week
*
* @return array array of year, week no as integers
* @access public
* @static
* @since Method available since Release 1.5.0
*/
function weekOfYear7th($pn_day = 0,
$pn_month = 0,
$pn_year = null,
$pn_firstdayofweek = DATE_CALC_BEGIN_WEEKDAY)
{
if (is_null($pn_year)) {
$pn_year = Date_Calc::dateNow('%Y');
}
if (empty($pn_month)) {
$pn_month = Date_Calc::dateNow('%m');
}
if (empty($pn_day)) {
$pn_day = Date_Calc::dateNow('%d');
}
$hn_wd1 = Date_Calc::daysToDayOfWeek(Date_Calc::firstDayOfYear($pn_year));
$hn_day = Date_Calc::dayOfYear($pn_day, $pn_month, $pn_year);
$hn_week = floor(($hn_day + (6 + $hn_wd1 - $pn_firstdayofweek) % 7) / 7);
if ($hn_week > 0) {
$hn_year = $pn_year;
} else {
// Week number is the last week of the previous ISO year:
//
list($hn_year, $hn_lastmonth, $hn_lastday) = explode(" ", Date_Calc::daysToDate(Date_Calc::lastDayOfYear($pn_year - 1), "%Y %m %d"));
list($hn_year, $hn_week) = Date_Calc::weekOfYear7th($hn_lastday, $hn_lastmonth, $hn_year, $pn_firstdayofweek);
}
return array((int) $hn_year, (int) $hn_week);
}
// }}}
// {{{ dateSeason()
/**
* Determines julian date of the given season
*
* Adapted from previous work in Java by James Mark Hamilton.
*
* @param string $season the season to get the date for: VERNALEQUINOX,
* SUMMERSOLSTICE, AUTUMNALEQUINOX,
* or WINTERSOLSTICE
* @param string $year the year in four digit format. Must be between
* -1000 B.C. and 3000 A.D.
*
* @return float the julian date the season starts on
* @access public
* @static
*/
function dateSeason($season, $year = 0)
{
if ($year == '') {
$year = Date_Calc::dateNow('%Y');
}
if (($year >= -1000) && ($year <= 1000)) {
$y = $year / 1000.0;
switch ($season) {
case 'VERNALEQUINOX':
$juliandate = (((((((-0.00071 * $y) - 0.00111) * $y) + 0.06134) * $y) + 365242.1374) * $y) + 1721139.29189;
break;
case 'SUMMERSOLSTICE':
$juliandate = (((((((0.00025 * $y) + 0.00907) * $y) - 0.05323) * $y) + 365241.72562) * $y) + 1721233.25401;
break;
case 'AUTUMNALEQUINOX':
$juliandate = (((((((0.00074 * $y) - 0.00297) * $y) - 0.11677) * $y) + 365242.49558) * $y) + 1721325.70455;
break;
case 'WINTERSOLSTICE':
default:
$juliandate = (((((((-0.00006 * $y) - 0.00933) * $y) - 0.00769) * $y) + 365242.88257) * $y) + 1721414.39987;
}
} elseif (($year > 1000) && ($year <= 3000)) {
$y = ($year - 2000) / 1000;
switch ($season) {
case 'VERNALEQUINOX':
$juliandate = (((((((-0.00057 * $y) - 0.00411) * $y) + 0.05169) * $y) + 365242.37404) * $y) + 2451623.80984;
break;
case 'SUMMERSOLSTICE':
$juliandate = (((((((-0.0003 * $y) + 0.00888) * $y) + 0.00325) * $y) + 365241.62603) * $y) + 2451716.56767;
break;
case 'AUTUMNALEQUINOX':
$juliandate = (((((((0.00078 * $y) + 0.00337) * $y) - 0.11575) * $y) + 365242.01767) * $y) + 2451810.21715;
break;
case 'WINTERSOLSTICE':
default:
$juliandate = (((((((0.00032 * $y) - 0.00823) * $y) - 0.06223) * $y) + 365242.74049) * $y) + 2451900.05952;
}
}
return $juliandate;
}
// }}}
// {{{ dayOfYear()
/**
* Returns number of days since 31 December of year before given date
*
* @param int $pn_day the day of the month, default is current local day
* @param int $pn_month the month, default is current local month
* @param int $pn_year the year in four digit format, default is current
* local year
*
* @return int
* @access public
* @static
* @since Method available since Release 1.5.0
*/
function dayOfYear($pn_day = 0, $pn_month = 0, $pn_year = null)
{
if (is_null($pn_year)) {
$pn_year = Date_Calc::dateNow('%Y');
}
if (empty($pn_month)) {
$pn_month = Date_Calc::dateNow('%m');
}
if (empty($pn_day)) {
$pn_day = Date_Calc::dateNow('%d');
}
$hn_jd = Date_Calc::dateToDays($pn_day, $pn_month, $pn_year);
$hn_jd1 = Date_Calc::firstDayOfYear($pn_year);
return $hn_jd - $hn_jd1 + 1;
}
// }}}
// {{{ julianDate()
/**
* Returns number of days since 31 December of year before given date
*
* @param int $pn_day the day of the month, default is current local day
* @param int $pn_month the month, default is current local month
* @param int $pn_year the year in four digit format, default is current
* local year
*
* @return int
* @access public
* @static
* @deprecated Method deprecated in Release 1.5.0
*/
function julianDate($pn_day = 0, $pn_month = 0, $pn_year = null)
{
return Date_Calc::dayOfYear($pn_day, $pn_month, $pn_year);
}
// }}}
// {{{ getWeekdayFullname()
/**
* Returns the full weekday name for the given date
*
* @param int $pn_day the day of the month, default is current local day
* @param int $pn_month the month, default is current local month
* @param int $pn_year the year in four digit format, default is current
* local year
*
* @return string the full name of the day of the week
* @access public
* @static
*/
function getWeekdayFullname($pn_day = 0, $pn_month = 0, $pn_year = null)
{
if (is_null($pn_year)) {
$pn_year = Date_Calc::dateNow('%Y');
}
if (empty($pn_month)) {
$pn_month = Date_Calc::dateNow('%m');
}
if (empty($pn_day)) {
$pn_day = Date_Calc::dateNow('%d');
}
$weekday_names = Date_Calc::getWeekDays();
$weekday = Date_Calc::dayOfWeek($pn_day, $pn_month, $pn_year);
return $weekday_names[$weekday];
}
// }}}
// {{{ getWeekdayAbbrname()
/**
* Returns the abbreviated weekday name for the given date
*
* @param int $pn_day the day of the month, default is current local day
* @param int $pn_month the month, default is current local month
* @param int $pn_year the year in four digit format, default is current
* local year
* @param int $length the length of abbreviation
*
* @return string the abbreviated name of the day of the week
* @access public
* @static
* @see Date_Calc::getWeekdayFullname()
*/
function getWeekdayAbbrname($pn_day = 0,
$pn_month = 0,
$pn_year = null,
$length = 3)
{
if (is_null($pn_year)) {
$pn_year = Date_Calc::dateNow('%Y');
}
if (empty($pn_month)) {
$pn_month = Date_Calc::dateNow('%m');
}
if (empty($pn_day)) {
$pn_day = Date_Calc::dateNow('%d');
}
$weekday_names = Date_Calc::getWeekDays(true);
$weekday = Date_Calc::dayOfWeek($pn_day, $pn_month, $pn_year);
return $weekday_names[$weekday];
}
// }}}
// {{{ getMonthFullname()
/**
* Returns the full month name for the given month
*
* @param int $month the month
*
* @return string the full name of the month
* @access public
* @static
*/
function getMonthFullname($month)
{
$month = (int)$month;
if (empty($month)) {
$month = (int)Date_Calc::dateNow('%m');
}
$month_names = Date_Calc::getMonthNames();
return $month_names[$month];
}
// }}}
// {{{ getMonthAbbrname()
/**
* Returns the abbreviated month name for the given month
*
* @param int $month the month
* @param int $length the length of abbreviation
*
* @return string the abbreviated name of the month
* @access public
* @static
* @see Date_Calc::getMonthFullname
*/
function getMonthAbbrname($month, $length = 3)
{
$month = (int)$month;
if (empty($month)) {
$month = Date_Calc::dateNow('%m');
}
$month_names = Date_Calc::getMonthNames(true);
return $month_names[$month];
}
// }}}
// {{{ getMonthFromFullname()
/**
* Returns the numeric month from the month name or an abreviation
*
* Both August and Aug would return 8.
*
* @param string $month the name of the month to examine.
* Case insensitive.
*
* @return int the month's number
* @access public
* @static
*/
function getMonthFromFullName($month)
{
$month = strtolower($month);
$months = Date_Calc::getMonthNames();
while (list($id, $name) = each($months)) {
if (ereg($month, strtolower($name))) {
return $id;
}
}
return 0;
}
// }}}
// {{{ getWeekDays()
/**
* Returns an array of week day names
*
* Used to take advantage of the setlocale function to return language
* specific week days.
*
* @param int $pb_abbreviated whether to return the abbreviated form of the
* days
*
* @return array an array of week-day names
* @access public
* @static
*/
function getWeekDays($pb_abbreviated = false)
{
for ($i = 0; $i < 7; $i++) {
$weekdays[$i] = strftime($pb_abbreviated ? '%a' : '%A',
mktime(0, 0, 0, 1, $i, 2001));
}
return $weekdays;
}
// }}}
// {{{ daysToDayOfWeek()
/**
* Returns day of week for specified 'Julian Day'
*
* The algorithm is valid for all years (positive and negative), and
* also for years preceding 4714 B.C. (i.e. for negative 'Julian Days'),
* and so the only limitation is platform-dependent (for 32-bit systems
* the maximum year would be something like about 1,465,190 A.D.).
*
* N.B. Monday, 24th November, 4714 B.C. is Julian Day '0'.
*
* @param int $pn_days the number of days since 24th November, 4714 B.C.
*
* @return int integer from 0 to 7 where 0 represents Sunday
* @access public
* @static
* @since Method available since Release 1.5.0
*/
function daysToDayOfWeek($pn_days)
{
// On Julian day 0 the day is Monday (PHP day 1):
//
$ret = ($pn_days + 1) % 7;
return $ret < 0 ? $ret + 7 : $ret;
}
// }}}
// {{{ dayOfWeek()
/**
* Returns day of week for given date (0 = Sunday)
*
* The algorithm is valid for all years (positive and negative).
*
* @param int $day the day of the month, default is current local day
* @param int $month the month, default is current local month
* @param int $year the year in four digit format, default is current
* local year
*
* @return int the number of the day in the week
* @access public
* @static
*/
function dayOfWeek($day = null, $month = null, $year = null)
{
if (is_null($year)) {
$year = Date_Calc::dateNow('%Y');
}
if (empty($month)) {
$month = Date_Calc::dateNow('%m');
}
if (empty($day)) {
$day = Date_Calc::dateNow('%d');
}
// if ($month <= 2) {
// $month += 12;
// --$year;
// }
// $wd = ($day +
// intval((13 * $month + 3) / 5) +
// $year +
// floor($year / 4) -
// floor($year / 100) +
// floor($year / 400) +
// 1) % 7;
// return (int) ($wd < 0 ? $wd + 7 : $wd);
return Date_Calc::daysToDayOfWeek(Date_Calc::dateToDays($day,
$month,
$year));
}
// }}}
// {{{ weekOfYearAbsolute()
/**
* Returns week of the year counting week 1 as 1st-7th January,
* regardless of what day 1st January falls on
*
* Returned value is an integer from 1 to 53. Week 53 will start on
* 31st December and have only one day, except in a leap year, in
* which it will start a day earlier and contain two days.
*
* @param int $pn_day the day of the month, default is current local day
* @param int $pn_month the month, default is current local month
* @param int $pn_year the year in four digit format, default is current
* local year
*
* @return int integer from 1 to 53
* @access public
* @static
* @since Method available since Release 1.5.0
*/
function weekOfYearAbsolute($pn_day = 0, $pn_month = 0, $pn_year = null)
{
if (is_null($pn_year)) {
$pn_year = Date_Calc::dateNow('%Y');
}
if (empty($pn_month)) {
$pn_month = Date_Calc::dateNow('%m');
}
if (empty($pn_day)) {
$pn_day = Date_Calc::dateNow('%d');
}
$hn_day = Date_Calc::dayOfYear($pn_day, $pn_month, $pn_year);
return intval(($hn_day + 6) / 7);
}
// }}}
// {{{ weekOfYear1st()
/**
* Returns week of the year counting week 1 as the week that contains 1st
* January
*
* Week 1 is determined to be the week that includes the 1st January, even
* if this week extends into the previous year, in which case the week will
* only contain between 1 and 6 days of the current year. Note that this
* definition depends on which day is the first day of the week, and that if
* this is not passed as the '$pn_firstdayofweek' parameter, the default is
* assumed.
*
* Note also that the last day week of the year is also likely to contain
* less than seven days, except in the case that the last day of the week
* falls on 31st December.
*
* Returned value is an integer from 1 to 54. The year will only contain
* 54 weeks in the case of a leap year in which 1st January is the last day
* of the week, and 31st December is the first day of the week. In this
* case, both weeks 1 and 54 will contain one day only.
*
* @param int $pn_day the day of the month, default is current
* local day
* @param int $pn_month the month, default is current local month
* @param int $pn_year the year in four digit format, default is
* current local year
* @param int $pn_firstdayofweek optional integer specifying the first day
* of the week
*
* @return int integer from 1 to 54
* @access public
* @static
* @since Method available since Release 1.5.0
*/
function weekOfYear1st($pn_day = 0,
$pn_month = 0,
$pn_year = null,
$pn_firstdayofweek = DATE_CALC_BEGIN_WEEKDAY)
{
if (is_null($pn_year)) {
$pn_year = Date_Calc::dateNow('%Y');
}
if (empty($pn_month)) {
$pn_month = Date_Calc::dateNow('%m');
}
if (empty($pn_day)) {
$pn_day = Date_Calc::dateNow('%d');
}
$hn_wd1 = Date_Calc::daysToDayOfWeek(Date_Calc::firstDayOfYear($pn_year));
$hn_day = Date_Calc::dayOfYear($pn_day, $pn_month, $pn_year);
return floor(($hn_day + (7 + $hn_wd1 - $pn_firstdayofweek) % 7 + 6) / 7);
}
// }}}
// {{{ weekOfYear()
/**
* Returns week of the year, where first Sunday is first day of first week
*
* N.B. this function is equivalent to calling:
*
* <code>Date_Calc::weekOfYear7th($day, $month, $year, 0)</code>
*
* Returned week is an integer from 1 to 53.
*
* @param int $pn_day the day of the month, default is current local day
* @param int $pn_month the month, default is current local month
* @param int $pn_year the year in four digit format, default is current
* local year
*
* @return int integer from 1 to 53
* @access public
* @static
* @see Date_Calc::weekOfYear7th
* @deprecated Method deprecated in Release 1.5.0
*/
function weekOfYear($pn_day = 0, $pn_month = 0, $pn_year = null)
{
$ha_week = Date_Calc::weekOfYear7th($pn_day, $pn_month, $pn_year, 0);
return $ha_week[1];
}
// }}}
// {{{ weekOfMonthAbsolute()
/**
* Returns week of the month counting week 1 as 1st-7th of the month,
* regardless of what day the 1st falls on
*
* Returned value is an integer from 1 to 5. Week 5 will start on
* the 29th of the month and have between 1 and 3 days, except
* in February in a non-leap year, when there will be 4 weeks only.
*
* @param int $pn_day the day of the month, default is current local day
*
* @return int integer from 1 to 5
* @access public
* @static
* @since Method available since Release 1.5.0
*/
function weekOfMonthAbsolute($pn_day = 0)
{
if (empty($pn_day)) {
$pn_day = Date_Calc::dateNow('%d');
}
return intval(($pn_day + 6) / 7);
}
// }}}
// {{{ weekOfMonth()
/**
* Alias for 'weekOfMonthAbsolute()'
*
* @param int $pn_day the day of the month, default is current local day
*
* @return int integer from 1 to 5
* @access public
* @static
* @since Method available since Release 1.5.0
*/
function weekOfMonth($pn_day = 0)
{
return Date_Calc::weekOfMonthAbsolute($pn_day);
}
// }}}
// {{{ quarterOfYear()
/**
* Returns quarter of the year for given date
*
* @param int $day the day of the month, default is current local day
* @param int $month the month, default is current local month
* @param int $year the year in four digit format, default is current
* local year
*
* @return int the number of the quarter in the year
* @access public
* @static
*/
function quarterOfYear($day = 0, $month = 0, $year = null)
{
if (empty($month)) {
$month = Date_Calc::dateNow('%m');
}
return intval(($month - 1) / 3 + 1);
}
// }}}
// {{{ daysInMonth()
/**
* Returns the number of days in the given month
*
* @param int $month the month, default is current local month
* @param int $year the year in four digit format, default is current
* local year
*
* @return int the number of days the month has
* @access public
* @static
*/
function daysInMonth($month = 0, $year = null)
{
if (is_null($year)) {
$year = Date_Calc::dateNow('%Y');
}
if (empty($month)) {
$month = Date_Calc::dateNow('%m');
}
return Date_Calc::lastDayOfMonth($month, $year) -
Date_Calc::firstDayOfMonth($month, $year) +
1;
}
// }}}
// {{{ daysInYear()
/**
* Returns the number of days in the given year
*
* @param int $year the year in four digit format, default is current local
* year
*
* @return int the number of days the year has
* @access public
* @static
*/
function daysInYear($year = null)
{
if (is_null($year)) {
$year = Date_Calc::dateNow('%Y');
}
return Date_Calc::firstDayOfYear($year + 1) -
Date_Calc::firstDayOfYear($year);
}
// }}}
// {{{ weeksInMonth()
/**
* Returns the number of rows on a calendar month
*
* Useful for determining the number of rows when displaying a typical
* month calendar.
*
* @param int $month the month, default is current local month
* @param int $year the year in four digit format, default is current
* local year
*
* @return int the number of weeks the month has
* @access public
* @static
*/
function weeksInMonth($month = 0, $year = null)
{
if (is_null($year)) {
$year = Date_Calc::dateNow('%Y');
}
if (empty($month)) {
$month = Date_Calc::dateNow('%m');
}
$FDOM = Date_Calc::firstOfMonthWeekday($month, $year);
if (DATE_CALC_BEGIN_WEEKDAY==1 && $FDOM==0) {
$first_week_days = 7 - $FDOM + DATE_CALC_BEGIN_WEEKDAY;
$weeks = 1;
} elseif (DATE_CALC_BEGIN_WEEKDAY==0 && $FDOM == 6) {
$first_week_days = 7 - $FDOM + DATE_CALC_BEGIN_WEEKDAY;
$weeks = 1;
} else {
$first_week_days = DATE_CALC_BEGIN_WEEKDAY - $FDOM;
$weeks = 0;
}
$first_week_days %= 7;
return ceil((Date_Calc::daysInMonth($month, $year)
- $first_week_days) / 7) + $weeks;
}
// }}}
// {{{ getCalendarWeek()
/**
* Return an array with days in week
*
* @param int $day the day of the month, default is current local day
* @param int $month the month, default is current local month
* @param int $year the year in four digit format, default is current
* local year
* @param string $format the string indicating how to format the output
*
* @return array $week[$weekday]
* @access public
* @static
*/
function getCalendarWeek($day = 0, $month = 0, $year = null,
$format = DATE_CALC_FORMAT)
{
if (is_null($year)) {
$year = Date_Calc::dateNow('%Y');
}
if (empty($month)) {
$month = Date_Calc::dateNow('%m');
}
if (empty($day)) {
$day = Date_Calc::dateNow('%d');
}
$week_array = array();
// date for the column of week
$curr_day = Date_Calc::beginOfWeek($day, $month, $year, '%E');
for ($counter = 0; $counter <= 6; $counter++) {
$week_array[$counter] = Date_Calc::daysToDate($curr_day, $format);
$curr_day++;
}
return $week_array;
}
// }}}
// {{{ getCalendarMonth()
/**
* Return a set of arrays to construct a calendar month for the given date
*
* @param int $month the month, default is current local month
* @param int $year the year in four digit format, default is current
* local year
* @param string $format the string indicating how to format the output
*
* @return array $month[$row][$col]
* @access public
* @static
*/
function getCalendarMonth($month = 0, $year = null,
$format = DATE_CALC_FORMAT)
{
if (is_null($year)) {
$year = Date_Calc::dateNow('%Y');
}
if (empty($month)) {
$month = Date_Calc::dateNow('%m');
}
$month_array = array();
// date for the first row, first column of calendar month
if (DATE_CALC_BEGIN_WEEKDAY == 1) {
if (Date_Calc::firstOfMonthWeekday($month, $year) == 0) {
$curr_day = Date_Calc::firstDayOfMonth($month, $year) - 6;
} else {
$curr_day = Date_Calc::firstDayOfMonth($month, $year)
- Date_Calc::firstOfMonthWeekday($month, $year) + 1;
}
} else {
$curr_day = (Date_Calc::firstDayOfMonth($month, $year)
- Date_Calc::firstOfMonthWeekday($month, $year));
}
// number of days in this month
$daysInMonth = Date_Calc::daysInMonth($month, $year);
$weeksInMonth = Date_Calc::weeksInMonth($month, $year);
for ($row_counter = 0; $row_counter < $weeksInMonth; $row_counter++) {
for ($column_counter = 0; $column_counter <= 6; $column_counter++) {
$month_array[$row_counter][$column_counter] =
Date_Calc::daysToDate($curr_day, $format);
$curr_day++;
}
}
return $month_array;
}
// }}}
// {{{ getCalendarYear()
/**
* Return a set of arrays to construct a calendar year for the given date
*
* @param int $year the year in four digit format, default current
* local year
* @param string $format the string indicating how to format the output
*
* @return array $year[$month][$row][$col]
* @access public
* @static
*/
function getCalendarYear($year = null, $format = DATE_CALC_FORMAT)
{
if (is_null($year)) {
$year = Date_Calc::dateNow('%Y');
}
$year_array = array();
for ($curr_month = 0; $curr_month <= 11; $curr_month++) {
$year_array[$curr_month] =
Date_Calc::getCalendarMonth($curr_month + 1,
$year, $format);
}
return $year_array;
}
// }}}
// {{{ prevDay()
/**
* Returns date of day before given date
*
* @param int $day the day of the month, default is current local day
* @param int $month the month, default is current local month
* @param int $year the year in four digit format, default is current
* local year
* @param string $format the string indicating how to format the output
*
* @return string the date in the desired format
* @access public
* @static
*/
function prevDay($day = 0, $month = 0, $year = null,
$format = DATE_CALC_FORMAT)
{
if (is_null($year)) {
$year = Date_Calc::dateNow('%Y');
}
if (empty($month)) {
$month = Date_Calc::dateNow('%m');
}
if (empty($day)) {
$day = Date_Calc::dateNow('%d');
}
return Date_Calc::addDays(-1, $day, $month, $year, $format);
}
// }}}
// {{{ nextDay()
/**
* Returns date of day after given date
*
* @param int $day the day of the month, default is current local day
* @param int $month the month, default is current local month
* @param int $year the year in four digit format, default is current
* local year
* @param string $format the string indicating how to format the output
*
* @return string the date in the desired format
* @access public
* @static
*/
function nextDay($day = 0,
$month = 0,
$year = null,
$format = DATE_CALC_FORMAT)
{
if (is_null($year)) {
$year = Date_Calc::dateNow('%Y');
}
if (empty($month)) {
$month = Date_Calc::dateNow('%m');
}
if (empty($day)) {
$day = Date_Calc::dateNow('%d');
}
return Date_Calc::addDays(1, $day, $month, $year, $format);
}
// }}}
// {{{ prevWeekday()
/**
* Returns date of the previous weekday, skipping from Monday to Friday
*
* @param int $day the day of the month, default is current local day
* @param int $month the month, default is current local month
* @param int $year the year in four digit format, default is current
* local year
* @param string $format the string indicating how to format the output
*
* @return string the date in the desired format
* @access public
* @static
*/
function prevWeekday($day = 0, $month = 0, $year = null,
$format = DATE_CALC_FORMAT)
{
if (is_null($year)) {
$year = Date_Calc::dateNow('%Y');
}
if (empty($month)) {
$month = Date_Calc::dateNow('%m');
}
if (empty($day)) {
$day = Date_Calc::dateNow('%d');
}
$days = Date_Calc::dateToDays($day, $month, $year);
if (Date_Calc::dayOfWeek($day, $month, $year) == 1) {
$days -= 3;
} elseif (Date_Calc::dayOfWeek($day, $month, $year) == 0) {
$days -= 2;
} else {
$days -= 1;
}
return Date_Calc::daysToDate($days, $format);
}
// }}}
// {{{ nextWeekday()
/**
* Returns date of the next weekday of given date, skipping from
* Friday to Monday
*
* @param int $day the day of the month, default is current local day
* @param int $month the month, default is current local month
* @param int $year the year in four digit format, default is current
* local year
* @param string $format the string indicating how to format the output
*
* @return string the date in the desired format
* @access public
* @static
*/
function nextWeekday($day = 0, $month = 0, $year = null,
$format = DATE_CALC_FORMAT)
{
if (is_null($year)) {
$year = Date_Calc::dateNow('%Y');
}
if (empty($month)) {
$month = Date_Calc::dateNow('%m');
}
if (empty($day)) {
$day = Date_Calc::dateNow('%d');
}
$days = Date_Calc::dateToDays($day, $month, $year);
if (Date_Calc::dayOfWeek($day, $month, $year) == 5) {
$days += 3;
} elseif (Date_Calc::dayOfWeek($day, $month, $year) == 6) {
$days += 2;
} else {
$days += 1;
}
return Date_Calc::daysToDate($days, $format);
}
// }}}
// {{{ daysToPrevDayOfWeek()
/**
* Returns 'Julian Day' of the previous specific day of the week
* from the given date.
*
* @param int $dow the day of the week (0 = Sunday)
* @param int $days 'Julian Day', i.e. the no of days since 1st
* January, 4713 B.C.
* @param bool $onorbefore if true and days are same, returns current day
*
* @return int 'Julian Day', i.e. the no of days since 1st January,
* 4713 B.C.
* @access public
* @static
* @since Method available since Release 1.5.0
*/
function daysToPrevDayOfWeek($dow, $days, $onorbefore = false)
{
$curr_weekday = Date_Calc::daysToDayOfWeek($days);
if ($curr_weekday == $dow) {
if ($onorbefore) {
return $days;
} else {
return $days - 7;
}
} else if ($curr_weekday < $dow) {
return $days - 7 + $dow - $curr_weekday;
} else {
return $days - $curr_weekday + $dow;
}
}
// }}}
// {{{ prevDayOfWeek()
/**
* Returns date of the previous specific day of the week
* from the given date
*
* @param int $dow the day of the week (0 = Sunday)
* @param int $day the day of the month, default is current local
* day
* @param int $month the month, default is current local month
* @param int $year the year in four digit format, default is
* current local year
* @param string $format the string indicating how to format the output
* @param bool $onorbefore if true and days are same, returns current day
*
* @return string the date in the desired format
* @access public
* @static
*/
function prevDayOfWeek($dow,
$day = 0,
$month = 0,
$year = null,
$format = DATE_CALC_FORMAT,
$onorbefore = false)
{
if (is_null($year)) {
$year = Date_Calc::dateNow('%Y');
}
if (empty($month)) {
$month = Date_Calc::dateNow('%m');
}
if (empty($day)) {
$day = Date_Calc::dateNow('%d');
}
$days = Date_Calc::dateToDays($day, $month, $year);
$days = Date_Calc::daysToPrevDayOfWeek($dow, $days, $onorbefore);
return Date_Calc::daysToDate($days, $format);
}
// }}}
// {{{ daysToNextDayOfWeek()
/**
* Returns 'Julian Day' of the next specific day of the week
* from the given date.
*
* @param int $dow the day of the week (0 = Sunday)
* @param int $days 'Julian Day', i.e. the no of days since 1st
* January, 4713 B.C.
* @param bool $onorafter if true and days are same, returns current day
*
* @return int 'Julian Day', i.e. the no of days since 1st January,
* 4713 B.C.
* @access public
* @static
* @since Method available since Release 1.5.0
*/
function daysToNextDayOfWeek($dow, $days, $onorafter = false)
{
$curr_weekday = Date_Calc::daysToDayOfWeek($days);
if ($curr_weekday == $dow) {
if ($onorafter) {
return $days;
} else {
return $days + 7;
}
} else if ($curr_weekday > $dow) {
return $days + 7 - $curr_weekday + $dow;
} else {
return $days + $dow - $curr_weekday;
}
}
// }}}
// {{{ nextDayOfWeek()
/**
* Returns date of the next specific day of the week
* from the given date
*
* @param int $dow the day of the week (0 = Sunday)
* @param int $day the day of the month, default is current local
* day
* @param int $month the month, default is current local month
* @param int $year the year in four digit format, default is
* current local year
* @param string $format the string indicating how to format the output
* @param bool $onorafter if true and days are same, returns current day
*
* @return string the date in the desired format
* @access public
* @static
*/
function nextDayOfWeek($dow,
$day = 0,
$month = 0,
$year = null,
$format = DATE_CALC_FORMAT,
$onorafter = false)
{
if (is_null($year)) {
$year = Date_Calc::dateNow('%Y');
}
if (empty($month)) {
$month = Date_Calc::dateNow('%m');
}
if (empty($day)) {
$day = Date_Calc::dateNow('%d');
}
$days = Date_Calc::dateToDays($day, $month, $year);
$days = Date_Calc::daysToNextDayOfWeek($dow, $days, $onorafter);
return Date_Calc::daysToDate($days, $format);
}
// }}}
// {{{ prevDayOfWeekOnOrBefore()
/**
* Returns date of the previous specific day of the week
* on or before the given date
*
* @param int $dow the day of the week (0 = Sunday)
* @param int $day the day of the month, default is current local day
* @param int $month the month, default is current local month
* @param int $year the year in four digit format, default is current
* local year
* @param string $format the string indicating how to format the output
*
* @return string the date in the desired format
* @access public
* @static
*/
function prevDayOfWeekOnOrBefore($dow,
$day = 0,
$month = 0,
$year = null,
$format = DATE_CALC_FORMAT)
{
return Date_Calc::prevDayOfWeek($dow,
$day,
$month,
$year,
$format,
true);
}
// }}}
// {{{ nextDayOfWeekOnOrAfter()
/**
* Returns date of the next specific day of the week
* on or after the given date
*
* @param int $dow the day of the week (0 = Sunday)
* @param int $day the day of the month, default is current local day
* @param int $month the month, default is current local month
* @param int $year the year in four digit format, default is current
* local year
* @param string $format the string indicating how to format the output
*
* @return string the date in the desired format
* @access public
* @static
*/
function nextDayOfWeekOnOrAfter($dow,
$day = 0,
$month = 0,
$year = null,
$format = DATE_CALC_FORMAT)
{
return Date_Calc::nextDayOfWeek($dow,
$day,
$month,
$year,
$format,
true);
}
// }}}
// {{{ beginOfWeek()
/**
* Find the month day of the beginning of week for given date,
* using DATE_CALC_BEGIN_WEEKDAY
*
* Can return weekday of prev month.
*
* @param int $day the day of the month, default is current local day
* @param int $month the month, default is current local month
* @param int $year the year in four digit format, default is current
* local year
* @param string $format the string indicating how to format the output
*
* @return string the date in the desired format
* @access public
* @static
*/
function beginOfWeek($day = 0, $month = 0, $year = null,
$format = DATE_CALC_FORMAT)
{
if (is_null($year)) {
$year = Date_Calc::dateNow('%Y');
}
if (empty($month)) {
$month = Date_Calc::dateNow('%m');
}
if (empty($day)) {
$day = Date_Calc::dateNow('%d');
}
$hn_days = Date_Calc::dateToDays($day, $month, $year);
$this_weekday = Date_Calc::daysToDayOfWeek($hn_days);
$interval = (7 - DATE_CALC_BEGIN_WEEKDAY + $this_weekday) % 7;
return Date_Calc::daysToDate($hn_days - $interval, $format);
}
// }}}
// {{{ endOfWeek()
/**
* Find the month day of the end of week for given date,
* using DATE_CALC_BEGIN_WEEKDAY
*
* Can return weekday of following month.
*
* @param int $day the day of the month, default is current local day
* @param int $month the month, default is current local month
* @param int $year the year in four digit format, default is current
* local year
* @param string $format the string indicating how to format the output
*
* @return string the date in the desired format
* @access public
* @static
*/
function endOfWeek($day = 0, $month = 0, $year = null,
$format = DATE_CALC_FORMAT)
{
if (is_null($year)) {
$year = Date_Calc::dateNow('%Y');
}
if (empty($month)) {
$month = Date_Calc::dateNow('%m');
}
if (empty($day)) {
$day = Date_Calc::dateNow('%d');
}
$hn_days = Date_Calc::dateToDays($day, $month, $year);
$this_weekday = Date_Calc::daysToDayOfWeek($hn_days);
$interval = (6 + DATE_CALC_BEGIN_WEEKDAY - $this_weekday) % 7;
return Date_Calc::daysToDate($hn_days + $interval, $format);
}
// }}}
// {{{ beginOfPrevWeek()
/**
* Find the month day of the beginning of week before given date,
* using DATE_CALC_BEGIN_WEEKDAY
*
* Can return weekday of prev month.
*
* @param int $day the day of the month, default is current local day
* @param int $month the month, default is current local month
* @param int $year the year in four digit format, default is current
* local year
* @param string $format the string indicating how to format the output
*
* @return string the date in the desired format
* @access public
* @static
*/
function beginOfPrevWeek($day = 0, $month = 0, $year = null,
$format = DATE_CALC_FORMAT)
{
if (is_null($year)) {
$year = Date_Calc::dateNow('%Y');
}
if (empty($month)) {
$month = Date_Calc::dateNow('%m');
}
if (empty($day)) {
$day = Date_Calc::dateNow('%d');
}
list($hn_pwyear, $hn_pwmonth, $hn_pwday) =
explode(" ", Date_Calc::daysToDate(Date_Calc::dateToDays($day,
$month,
$year) - 7,
'%Y %m %d'));
return Date_Calc::beginOfWeek($hn_pwday,
$hn_pwmonth,
$hn_pwyear,
$format);
}
// }}}
// {{{ beginOfNextWeek()
/**
* Find the month day of the beginning of week after given date,
* using DATE_CALC_BEGIN_WEEKDAY
*
* Can return weekday of prev month.
*
* @param int $day the day of the month, default is current local day
* @param int $month the month, default is current local month
* @param int $year the year in four digit format, default is current
* local year
* @param string $format the string indicating how to format the output
*
* @return string the date in the desired format
* @access public
* @static
*/
function beginOfNextWeek($day = 0, $month = 0, $year = null,
$format = DATE_CALC_FORMAT)
{
if (is_null($year)) {
$year = Date_Calc::dateNow('%Y');
}
if (empty($month)) {
$month = Date_Calc::dateNow('%m');
}
if (empty($day)) {
$day = Date_Calc::dateNow('%d');
}
list($hn_pwyear, $hn_pwmonth, $hn_pwday) =
explode(" ",
Date_Calc::daysToDate(Date_Calc::dateToDays($day,
$month,
$year) + 7,
'%Y %m %d'));
return Date_Calc::beginOfWeek($hn_pwday,
$hn_pwmonth,
$hn_pwyear,
$format);
}
// }}}
// {{{ beginOfMonth()
/**
* Return date of first day of month of given date
*
* @param int $month the month, default is current local month
* @param int $year the year in four digit format, default is current
* local year
* @param string $format the string indicating how to format the output
*
* @return string the date in the desired format
* @access public
* @static
* @see Date_Calc::beginOfMonthBySpan()
* @deprecated Method deprecated in Release 1.4.4
*/
function beginOfMonth($month = 0, $year = null, $format = DATE_CALC_FORMAT)
{
if (is_null($year)) {
$year = Date_Calc::dateNow('%Y');
}
if (empty($month)) {
$month = Date_Calc::dateNow('%m');
}
return Date_Calc::dateFormat(Date_Calc::getFirstDayOfMonth($month,
$year),
$month,
$year,
$format);
}
// }}}
// {{{ endOfMonth()
/**
* Return date of last day of month of given date
*
* @param int $month the month, default is current local month
* @param int $year the year in four digit format, default is current
* local year
* @param string $format the string indicating how to format the output
*
* @return string the date in the desired format
* @access public
* @static
* @see Date_Calc::beginOfMonthBySpan()
* @since Method available since Release 1.5.0
* @deprecated Method deprecated in Release 1.5.0
*/
function endOfMonth($month = 0, $year = null, $format = DATE_CALC_FORMAT)
{
if (is_null($year)) {
$year = Date_Calc::dateNow('%Y');
}
if (empty($month)) {
$month = Date_Calc::dateNow('%m');
}
return Date_Calc::daysToDate(Date_Calc::lastDayOfMonth($month, $year),
$format);
}
// }}}
// {{{ beginOfPrevMonth()
/**
* Returns date of the first day of previous month of given date
*
* @param mixed $dummy irrelevant parameter
* @param int $month the month, default is current local month
* @param int $year the year in four digit format, default is current
* local year
* @param string $format the string indicating how to format the output
*
* @return string the date in the desired format
* @access public
* @static
* @see Date_Calc::beginOfMonthBySpan()
* @deprecated Method deprecated in Release 1.4.4
*/
function beginOfPrevMonth($dummy = null,
$month = 0,
$year = null,
$format = DATE_CALC_FORMAT)
{
if (is_null($year)) {
$year = Date_Calc::dateNow('%Y');
}
if (empty($month)) {
$month = Date_Calc::dateNow('%m');
}
list($hn_pmyear, $hn_prevmonth) = Date_Calc::prevMonth($month, $year);
return Date_Calc::dateFormat(Date_Calc::getFirstDayOfMonth($hn_prevmonth,
$hn_pmyear),
$hn_prevmonth,
$hn_pmyear,
$format);
}
// }}}
// {{{ endOfPrevMonth()
/**
* Returns date of the last day of previous month for given date
*
* @param mixed $dummy irrelevant parameter
* @param int $month the month, default is current local month
* @param int $year the year in four digit format, default is current
* local year
* @param string $format the string indicating how to format the output
*
* @return string the date in the desired format
* @access public
* @static
* @see Date_Calc::endOfMonthBySpan()
* @deprecated Method deprecated in Release 1.4.4
*/
function endOfPrevMonth($dummy = null,
$month = 0,
$year = null,
$format = DATE_CALC_FORMAT)
{
if (is_null($year)) {
$year = Date_Calc::dateNow('%Y');
}
if (empty($month)) {
$month = Date_Calc::dateNow('%m');
}
return Date_Calc::daysToDate(Date_Calc::firstDayOfMonth($month,
$year) - 1,
$format);
}
// }}}
// {{{ beginOfNextMonth()
/**
* Returns date of begin of next month of given date
*
* @param mixed $dummy irrelevant parameter
* @param int $month the month, default is current local month
* @param int $year the year in four digit format, default is current
* local year
* @param string $format the string indicating how to format the output
*
* @return string the date in the desired format
* @access public
* @static
* @see Date_Calc::beginOfMonthBySpan()
* @deprecated Method deprecated in Release 1.4.4
*/
function beginOfNextMonth($dummy = null,
$month = 0,
$year = null,
$format = DATE_CALC_FORMAT)
{
if (is_null($year)) {
$year = Date_Calc::dateNow('%Y');
}
if (empty($month)) {
$month = Date_Calc::dateNow('%m');
}
list($hn_nmyear, $hn_nextmonth) = Date_Calc::nextMonth($month, $year);
return Date_Calc::dateFormat(Date_Calc::getFirstDayOfMonth($hn_nextmonth,
$hn_nmyear),
$hn_nextmonth,
$hn_nmyear,
$format);
}
// }}}
// {{{ endOfNextMonth()
/**
* Returns date of the last day of next month of given date
*
* @param mixed $dummy irrelevant parameter
* @param int $month the month, default is current local month
* @param int $year the year in four digit format, default is current
* local year
* @param string $format the string indicating how to format the output
*
* @return string the date in the desired format
* @access public
* @static
* @see Date_Calc::endOfMonthBySpan()
* @deprecated Method deprecated in Release 1.4.4
*/
function endOfNextMonth($dummy = null,
$month = 0,
$year = null,
$format = DATE_CALC_FORMAT)
{
if (is_null($year)) {
$year = Date_Calc::dateNow('%Y');
}
if (empty($month)) {
$month = Date_Calc::dateNow('%m');
}
list($hn_nmyear, $hn_nextmonth) = Date_Calc::nextMonth($month, $year);
return Date_Calc::daysToDate(Date_Calc::lastDayOfMonth($hn_nextmonth,
$hn_nmyear),
$format);
}
// }}}
// {{{ beginOfMonthBySpan()
/**
* Returns date of the first day of the month in the number of months
* from the given date
*
* @param int $months the number of months from the date provided.
* Positive numbers go into the future.
* Negative numbers go into the past.
* 0 is the month presented in $month.
* @param string $month the month, default is current local month
* @param string $year the year in four digit format, default is the
* current local year
* @param string $format the string indicating how to format the output
*
* @return string the date in the desired format
* @access public
* @static
* @since Method available since Release 1.4.4
*/
function beginOfMonthBySpan($months = 0,
$month = 0,
$year = null,
$format = DATE_CALC_FORMAT)
{
if (is_null($year)) {
$year = Date_Calc::dateNow('%Y');
}
if (empty($month)) {
$month = Date_Calc::dateNow('%m');
}
return Date_Calc::addMonths($months,
Date_Calc::getFirstDayOfMonth($month, $year),
$month,
$year,
$format);
}
// }}}
// {{{ endOfMonthBySpan()
/**
* Returns date of the last day of the month in the number of months
* from the given date
*
* @param int $months the number of months from the date provided.
* Positive numbers go into the future.
* Negative numbers go into the past.
* 0 is the month presented in $month.
* @param string $month the month, default is current local month
* @param string $year the year in four digit format, default is the
* current local year
* @param string $format the string indicating how to format the output
*
* @return string the date in the desired format
* @access public
* @static
* @since Method available since Release 1.4.4
*/
function endOfMonthBySpan($months = 0,
$month = 0,
$year = null,
$format = DATE_CALC_FORMAT)
{
if (is_null($year)) {
$year = Date_Calc::dateNow('%Y');
}
if (empty($month)) {
$month = Date_Calc::dateNow('%m');
}
$hn_days = Date_Calc::addMonthsToDays($months + 1,
Date_Calc::firstDayOfMonth($month, $year)) - 1;
return Date_Calc::daysToDate($hn_days, $format);
}
// }}}
// {{{ firstOfMonthWeekday()
/**
* Find the day of the week for the first of the month of given date
*
* @param int $month the month, default is current local month
* @param int $year the year in four digit format, default is current
* local year
*
* @return int number of weekday for the first day, 0=Sunday
* @access public
* @static
*/
function firstOfMonthWeekday($month = 0, $year = null)
{
if (is_null($year)) {
$year = Date_Calc::dateNow('%Y');
}
if (empty($month)) {
$month = Date_Calc::dateNow('%m');
}
return Date_Calc::daysToDayOfWeek(Date_Calc::firstDayOfMonth($month,
$year));
}
// }}}
// {{{ nWeekdayOfMonth()
/**
* Calculates the date of the Nth weekday of the month,
* such as the second Saturday of January 2000
*
* @param int $week the number of the week to get
* (1 = first, etc. Also can be 'last'.)
* @param int $dow the day of the week (0 = Sunday)
* @param int $month the month
* @param int $year the year. Use the complete year instead of the
* abbreviated version. E.g. use 2005, not 05.
* @param string $format the string indicating how to format the output
*
* @return string the date in the desired format
* @access public
* @static
*/
function nWeekdayOfMonth($week, $dow, $month, $year,
$format = DATE_CALC_FORMAT)
{
if (is_numeric($week)) {
$DOW1day = ($week - 1) * 7 + 1;
$DOW1 = Date_Calc::dayOfWeek($DOW1day, $month, $year);
$wdate = ($week - 1) * 7 + 1 + (7 + $dow - $DOW1) % 7;
if ($wdate > Date_Calc::daysInMonth($month, $year)) {
return -1;
} else {
return Date_Calc::dateFormat($wdate, $month, $year, $format);
}
} elseif ($week == 'last' && $dow < 7) {
$lastday = Date_Calc::daysInMonth($month, $year);
$lastdow = Date_Calc::dayOfWeek($lastday, $month, $year);
$diff = $dow - $lastdow;
if ($diff > 0) {
return Date_Calc::dateFormat($lastday - (7 - $diff), $month,
$year, $format);
} else {
return Date_Calc::dateFormat($lastday + $diff, $month,
$year, $format);
}
} else {
return -1;
}
}
// }}}
// {{{ isValidDate()
/**
* Returns true for valid date, false for invalid date
*
* Uses the proleptic Gregorian calendar, with the year 0 (1 B.C.)
* assumed to be valid and also assumed to be a leap year.
*
* @param int $day the day of the month
* @param int $month the month
* @param int $year the year. Use the complete year instead of the
* abbreviated version. E.g. use 2005, not 05.
*
* @return bool
* @access public
* @static
*/
function isValidDate($day, $month, $year)
{
if ($day < 1 || $month < 1 || $month > 12)
return false;
if ($month == 2) {
if (Date_Calc::isLeapYearGregorian($year)) {
return $day <= 29;
} else {
return $day <= 28;
}
} elseif ($month == 4 || $month == 6 || $month == 9 || $month == 11) {
return $day <= 30;
} else {
return $day <= 31;
}
}
// }}}
// {{{ isLeapYearGregorian()
/**
* Returns true for a leap year, else false
*
* Uses the proleptic Gregorian calendar. The year 0 (1 B.C.) is
* assumed in this algorithm to be a leap year. The function is
* valid for all years, positive and negative.
*
* @param int $year the year. Use the complete year instead of the
* abbreviated version. E.g. use 2005, not 05.
*
* @return bool
* @access public
* @static
* @since Method available since Release 1.5.0
*/
function isLeapYearGregorian($year = null)
{
if (is_null($year)) {
$year = Date_Calc::dateNow('%Y');
}
return (($year % 4 == 0) &&
($year % 100 != 0)) ||
($year % 400 == 0);
}
// }}}
// {{{ isLeapYearJulian()
/**
* Returns true for a leap year, else false
*
* Uses the proleptic Julian calendar. The year 0 (1 B.C.) is
* assumed in this algorithm to be a leap year. The function is
* valid for all years, positive and negative.
*
* @param int $year the year. Use the complete year instead of the
* abbreviated version. E.g. use 2005, not 05.
*
* @return boolean
* @access public
* @static
* @since Method available since Release 1.5.0
*/
function isLeapYearJulian($year = null)
{
if (is_null($year)) {
$year = Date_Calc::dateNow('%Y');
}
return $year % 4 == 0;
}
// }}}
// {{{ isLeapYear()
/**
* Returns true for a leap year, else false
*
* @param int $year the year. Use the complete year instead of the
* abbreviated version. E.g. use 2005, not 05.
*
* @return boolean
* @access public
* @static
*/
function isLeapYear($year = null)
{
if (is_null($year)) {
$year = Date_Calc::dateNow('%Y');
}
if ($year < 1582) {
// pre Gregorio XIII - 1582
return Date_Calc::isLeapYearJulian($year);
} else {
// post Gregorio XIII - 1582
return Date_Calc::isLeapYearGregorian($year);
}
}
// }}}
// {{{ isFutureDate()
/**
* Determines if given date is a future date from now
*
* @param int $day the day of the month
* @param int $month the month
* @param int $year the year. Use the complete year instead of the
* abbreviated version. E.g. use 2005, not 05.
*
* @return bool
* @access public
* @static
*/
function isFutureDate($day, $month, $year)
{
$this_year = Date_Calc::dateNow('%Y');
$this_month = Date_Calc::dateNow('%m');
$this_day = Date_Calc::dateNow('%d');
if ($year > $this_year) {
return true;
} elseif ($year == $this_year) {
if ($month > $this_month) {
return true;
} elseif ($month == $this_month) {
if ($day > $this_day) {
return true;
}
}
}
return false;
}
// }}}
// {{{ isPastDate()
/**
* Determines if given date is a past date from now
*
* @param int $day the day of the month
* @param int $month the month
* @param int $year the year. Use the complete year instead of the
* abbreviated version. E.g. use 2005, not 05.
*
* @return boolean
* @access public
* @static
*/
function isPastDate($day, $month, $year)
{
$this_year = Date_Calc::dateNow('%Y');
$this_month = Date_Calc::dateNow('%m');
$this_day = Date_Calc::dateNow('%d');
if ($year < $this_year) {
return true;
} elseif ($year == $this_year) {
if ($month < $this_month) {
return true;
} elseif ($month == $this_month) {
if ($day < $this_day) {
return true;
}
}
}
return false;
}
// }}}
// {{{ dateDiff()
/**
* Returns number of days between two given dates
*
* @param int $day1 the day of the month
* @param int $month1 the month
* @param int $year1 the year. Use the complete year instead of the
* abbreviated version. E.g. use 2005, not 05.
* @param int $day2 the day of the month
* @param int $month2 the month
* @param int $year2 the year. Use the complete year instead of the
* abbreviated version. E.g. use 2005, not 05.
*
* @return int the absolute number of days between the two dates.
* If an error occurs, -1 is returned.
* @access public
* @static
*/
function dateDiff($day1, $month1, $year1, $day2, $month2, $year2)
{
if (!Date_Calc::isValidDate($day1, $month1, $year1)) {
return -1;
}
if (!Date_Calc::isValidDate($day2, $month2, $year2)) {
return -1;
}
return abs(Date_Calc::dateToDays($day1, $month1, $year1)
- Date_Calc::dateToDays($day2, $month2, $year2));
}
// }}}
// {{{ compareDates()
/**
* Compares two dates
*
* @param int $day1 the day of the month
* @param int $month1 the month
* @param int $year1 the year. Use the complete year instead of the
* abbreviated version. E.g. use 2005, not 05.
* @param int $day2 the day of the month
* @param int $month2 the month
* @param int $year2 the year. Use the complete year instead of the
* abbreviated version. E.g. use 2005, not 05.
*
* @return int 0 if the dates are equal. 1 if date 1 is later, -1
* if date 1 is earlier.
* @access public
* @static
*/
function compareDates($day1, $month1, $year1, $day2, $month2, $year2)
{
$ndays1 = Date_Calc::dateToDays($day1, $month1, $year1);
$ndays2 = Date_Calc::dateToDays($day2, $month2, $year2);
if ($ndays1 == $ndays2) {
return 0;
}
return ($ndays1 > $ndays2) ? 1 : -1;
}
// }}}
// {{{ round()
/**
* Rounds the date according to the specified precision
*
* The precision parameter must be one of the following constants:
*
* <code>DATE_PRECISION_YEAR</code>
* <code>DATE_PRECISION_MONTH</code>
* <code>DATE_PRECISION_DAY</code>
* <code>DATE_PRECISION_HOUR</code>
* <code>DATE_PRECISION_10MINUTES</code>
* <code>DATE_PRECISION_MINUTE</code>
* <code>DATE_PRECISION_10SECONDS</code>
* <code>DATE_PRECISION_SECOND</code>
*
* The precision can also be specified as an integral offset from
* one of these constants, where the offset reflects a precision
* of 10 to the power of the offset greater than the constant.
* For example:
*
* <code>DATE_PRECISION_YEAR - 1</code> rounds the date to the nearest 10
* years
* <code>DATE_PRECISION_YEAR - 3</code> rounds the date to the nearest 1000
* years
* <code>DATE_PRECISION_SECOND + 1</code> rounds the date to 1 decimal
* point of a second
* <code>DATE_PRECISION_SECOND + 1</code> rounds the date to 3 decimal
* points of a second
* <code>DATE_PRECISION_SECOND + 1</code> rounds the date to the nearest 10
* seconds (thus it is equivalent to
* DATE_PRECISION_10SECONDS)
*
* N.B. This function requires a time in UTC if both the precision is at
* least DATE_PRECISION_SECOND and leap seconds are being counted, otherwise
* any local time is acceptable.
*
* @param int $pn_precision a 'DATE_PRECISION_*' constant
* @param int $pn_day the day of the month
* @param int $pn_month the month
* @param int $pn_year the year
* @param int $pn_hour the hour
* @param int $pn_minute the minute
* @param mixed $pn_second the second as integer or float
* @param bool $pb_countleap whether to count leap seconds (defaults to
* DATE_COUNT_LEAP_SECONDS)
*
* @return array array of year, month, day, hour, minute, second
* @access public
* @static
* @since Method available since Release 1.5.0
*/
function round($pn_precision,
$pn_day,
$pn_month,
$pn_year,
$pn_hour = 0,
$pn_minute = 0,
$pn_second = 0,
$pb_countleap = DATE_COUNT_LEAP_SECONDS)
{
if ($pn_precision <= DATE_PRECISION_YEAR) {
$hn_month = 0;
$hn_day = 0;
$hn_hour = 0;
$hn_minute = 0;
$hn_second = 0;
if ($pn_precision < DATE_PRECISION_YEAR) {
$hn_year = round($pn_year, $pn_precision - DATE_PRECISION_YEAR);
} else {
// Check part-year:
//
$hn_midyear = (Date_Calc::firstDayOfYear($pn_year + 1) -
Date_Calc::firstDayOfYear($pn_year)) / 2;
if (($hn_days = Date_Calc::dayOfYear($pn_day,
$pn_month,
$pn_year)) <=
$hn_midyear - 1) {
$hn_year = $pn_year;
} else if ($hn_days >= $hn_midyear) {
// Round up:
//
$hn_year = $pn_year + 1;
} else {
// Take time into account:
//
$hn_partday = Date_Calc::secondsPastMidnight($pn_hour,
$pn_minute,
$pn_second) /
86400;
if ($hn_partday >= $hn_midyear - $hn_days) {
// Round up:
//
$hn_year = $pn_year + 1;
} else {
$hn_year = $pn_year;
}
}
}
} else if ($pn_precision == DATE_PRECISION_MONTH) {
$hn_year = $pn_year;
$hn_day = 0;
$hn_hour = 0;
$hn_minute = 0;
$hn_second = 0;
$hn_firstofmonth = Date_Calc::firstDayOfMonth($pn_month, $pn_year);
$hn_midmonth = (Date_Calc::lastDayOfMonth($pn_month, $pn_year) +
1 -
$hn_firstofmonth) / 2;
if (($hn_days = Date_Calc::dateToDays($pn_day,
$pn_month,
$pn_year) -
$hn_firstofmonth) <= $hn_midmonth - 1) {
$hn_month = $pn_month;
} else if ($hn_days >= $hn_midmonth) {
// Round up:
//
list($hn_year, $hn_month) = Date_Calc::nextMonth($pn_month,
$pn_year);
} else {
// Take time into account:
//
$hn_partday = Date_Calc::secondsPastMidnight($pn_hour,
$pn_minute,
$pn_second) /
86400;
if ($hn_partday >= $hn_midmonth - $hn_days) {
// Round up:
//
list($hn_year, $hn_month) = Date_Calc::nextMonth($pn_month,
$pn_year);
} else {
$hn_month = $pn_month;
}
}
} else if ($pn_precision == DATE_PRECISION_DAY) {
$hn_year = $pn_year;
$hn_month = $pn_month;
$hn_hour = 0;
$hn_minute = 0;
$hn_second = 0;
if (Date_Calc::secondsPastMidnight($pn_hour,
$pn_minute,
$pn_second) >= 43200) {
// Round up:
//
list($hn_year, $hn_month, $hn_day) =
explode(" ", Date_Calc::nextDay($pn_day,
$pn_month,
$pn_year,
"%Y %m %d"));
} else {
$hn_day = $pn_day;
}
} else if ($pn_precision == DATE_PRECISION_HOUR) {
$hn_year = $pn_year;
$hn_month = $pn_month;
$hn_day = $pn_day;
$hn_minute = 0;
$hn_second = 0;
if (Date_Calc::secondsPastTheHour($pn_minute, $pn_second) >= 1800) {
// Round up:
//
list($hn_year, $hn_month, $hn_day, $hn_hour) =
Date_Calc::addHours(1,
$pn_day,
$pn_month,
$pn_year,
$pn_hour);
} else {
$hn_hour = $pn_hour;
}
} else if ($pn_precision <= DATE_PRECISION_MINUTE) {
$hn_year = $pn_year;
$hn_month = $pn_month;
$hn_day = $pn_day;
$hn_hour = $pn_hour;
$hn_second = 0;
if ($pn_precision < DATE_PRECISION_MINUTE) {
$hn_minute = round($pn_minute,
$pn_precision - DATE_PRECISION_MINUTE);
} else {
// Check seconds:
//
if ($pn_second >= 30) {
// Round up:
//
list($hn_year,
$hn_month,
$hn_day,
$hn_hour,
$hn_minute) =
Date_Calc::addMinutes(1,
$pn_day,
$pn_month,
$pn_year,
$pn_hour,
$pn_minute);
} else {
$hn_minute = $pn_minute;
}
}
} else {
// Precision is at least (DATE_PRECISION_SECOND - 1):
//
$hn_year = $pn_year;
$hn_month = $pn_month;
$hn_day = $pn_day;
$hn_hour = $pn_hour;
$hn_minute = $pn_minute;
$hn_second = round($pn_second,
$pn_precision - DATE_PRECISION_SECOND);
if (fmod($hn_second, 1) == 0.0) {
$hn_second = (int) $hn_second;
if ($hn_second != intval($pn_second)) {
list($hn_year,
$hn_month,
$hn_day,
$hn_hour,
$hn_minute,
$hn_second) =
Date_Calc::addSeconds($hn_second - intval($pn_second),
$pn_day,
$pn_month,
$pn_year,
$pn_hour,
$pn_minute,
intval($pn_second),
$pn_precision >=
DATE_PRECISION_SECOND &&
$pb_countleap);
//
// (N.B. if rounded to nearest 10 seconds,
// user does not expect seconds to be '60')
}
}
}
return array((int) $hn_year,
(int) $hn_month,
(int) $hn_day,
(int) $hn_hour,
(int) $hn_minute,
$hn_second);
}
// }}}
// {{{ roundSeconds()
/**
* Rounds seconds up or down to the nearest specified unit
*
* @param int $pn_precision number of digits after the decimal point
* @param int $pn_day the day of the month
* @param int $pn_month the month
* @param int $pn_year the year
* @param int $pn_hour the hour
* @param int $pn_minute the minute
* @param mixed $pn_second the second as integer or float
* @param bool $pb_countleap whether to count leap seconds (defaults to
* DATE_COUNT_LEAP_SECONDS)
*
* @return array array of year, month, day, hour, minute, second
* @access public
* @static
* @since Method available since Release 1.5.0
*/
function roundSeconds($pn_precision,
$pn_day,
$pn_month,
$pn_year,
$pn_hour,
$pn_minute,
$pn_second,
$pb_countleap = DATE_COUNT_LEAP_SECONDS)
{
return Date_Calc::round(DATE_PRECISION_SECOND + $pn_precision,
$pn_day,
$pn_month,
$pn_year,
$pn_hour,
$pn_minute,
$pn_second);
}
// }}}
}
// }}}
/*
* Local variables:
* mode: php
* tab-width: 4
* c-basic-offset: 4
* c-hanging-comment-ender-p: nil
* End:
*/
/**
* This file contains the Horde_Date_Recurrence class and according constants.
*
* $Horde: framework/Date/Date/Recurrence.php,v 1.7.2.16 2010-10-14 14:18:05 jan Exp $
*
* Copyright 2007-2009 The Horde Project (http://www.horde.org/)
*
* See the enclosed file COPYING for license information (LGPL). If you
* did not receive this file, see http://www.fsf.org/copyleft/lgpl.html.
*
* @since Horde 3.2
* @package Horde_Date
*/
/** Horde_Date */
// require_once 'Horde/Date.php';
/** Date_Calc */
//require_once 'Date/Calc.php';
/** No recurrence. */
define('HORDE_DATE_RECUR_NONE', 0);
/** Recurs daily. */
define('HORDE_DATE_RECUR_DAILY', 1);
/** Recurs weekly. */
define('HORDE_DATE_RECUR_WEEKLY', 2);
/** Recurs monthly on the same date. */
define('HORDE_DATE_RECUR_MONTHLY_DATE', 3);
/** Recurs monthly on the same week day. */
define('HORDE_DATE_RECUR_MONTHLY_WEEKDAY', 4);
/** Recurs yearly on the same date. */
define('HORDE_DATE_RECUR_YEARLY_DATE', 5);
/** Recurs yearly on the same day of the year. */
define('HORDE_DATE_RECUR_YEARLY_DAY', 6);
/** Recurs yearly on the same week day. */
define('HORDE_DATE_RECUR_YEARLY_WEEKDAY', 7);
/**
* The Horde_Date_Recurrence class implements algorithms for calculating
* recurrences of events, including several recurrence types, intervals,
* exceptions, and conversion from and to vCalendar and iCalendar recurrence
* rules.
*
* All methods expecting dates as parameters accept all values that the
* Horde_Date constructor accepts, i.e. a timestamp, another Horde_Date
* object, an ISO time string or a hash.
*
* @author Jan Schneider <jan@horde.org>
* @since Horde 3.2
* @package Horde_Date
*/
class Horde_Date_Recurrence {
/**
* The start time of the event.
*
* @var Horde_Date
*/
var $start;
/**
* The end date of the recurrence interval.
*
* @var Horde_Date
*/
var $recurEnd = null;
/**
* The number of recurrences.
*
* @var integer
*/
var $recurCount = null;
/**
* The type of recurrence this event follows. HORDE_DATE_RECUR_* constant.
*
* @var integer
*/
var $recurType = HORDE_DATE_RECUR_NONE;
/**
* The length of time between recurrences. The time unit depends on the
* recurrence type.
*
* @var integer
*/
var $recurInterval = 1;
/**
* Any additional recurrence data.
*
* @var integer
*/
var $recurData = null;
/**
* BYDAY recurrence number
*
* @var integer
*/
var $recurNthDay = 0;
/**
* BYMONTH recurrence data
*
* @var array
*/
var $recurMonths = array();
/**
* All the exceptions from recurrence for this event.
*
* @var array
*/
var $exceptions = array();
/**
* All the dates this recurrence has been marked as completed.
*
* @var array
*/
var $completions = array();
/**
* Constructor.
*
* @param Horde_Date $start Start of the recurring event.
*/
function Horde_Date_Recurrence($start)
{
$this->start = new Horde_Date($start);
}
/**
* Checks if this event recurs on a given day of the week.
*
* @param integer $dayMask A mask consisting of HORDE_DATE_MASK_*
* constants specifying the day(s) to check.
*
* @return boolean True if this event recurs on the given day(s).
*/
function recurOnDay($dayMask)
{
return ($this->recurData & $dayMask);
}
/**
* Specifies the days this event recurs on.
*
* @param integer $dayMask A mask consisting of HORDE_DATE_MASK_*
* constants specifying the day(s) to recur on.
*/
function setRecurOnDay($dayMask)
{
$this->recurData = $dayMask;
}
/**
* Returns the days this event recurs on.
*
* @return integer A mask consisting of HORDE_DATE_MASK_* constants
* specifying the day(s) this event recurs on.
*/
function getRecurOnDays()
{
return $this->recurData;
}
/**
* Specifies the months for yearly (weekday) recurrence
*
* @param array $months List of months (integers) this event recurs on.
*/
function setRecurByMonth($months)
{
$this->recurMonths = (array)$months;
}
/**
* Returns a list of months this yearly event recurs on
*
* @return array List of months (integers) this event recurs on.
*/
function getRecurByMonth()
{
return $this->recurMonths;
}
/**
*
* @param integer $nthDay The nth weekday of month to repeat events on
*/
function setRecurNthWeekday($nthDay)
{
$this->recurNthDay = (int)$nthDay;
}
/**
*
* @return integer The nth weekday of month to repeat events.
*/
function getRecurNthWeekday()
{
return $this->recurNthDay;
}
/**
* Returns whether this event has a specific recurrence type.
*
* @param integer $recurrence HORDE_DATE_RECUR_* constant of the
* recurrence type to check for.
*
* @return boolean True if the event has the specified recurrence type.
*/
function hasRecurType($recurrence)
{
return ($recurrence == $this->recurType);
}
/**
* Sets a recurrence type for this event.
*
* @param integer $recurrence A HORDE_DATE_RECUR_* constant.
*/
function setRecurType($recurrence)
{
$this->recurType = $recurrence;
}
/**
* Returns recurrence type of this event.
*
* @return integer A HORDE_DATE_RECUR_* constant.
*/
function getRecurType()
{
return $this->recurType;
}
/**
* Returns a description of this event's recurring type.
*
* @return string Human readable recurring type.
*/
function getRecurName()
{
switch ($this->getRecurType()) {
case HORDE_DATE_RECUR_NONE: return _("No recurrence");
case HORDE_DATE_RECUR_DAILY: return _("Daily");
case HORDE_DATE_RECUR_WEEKLY: return _("Weekly");
case HORDE_DATE_RECUR_MONTHLY_DATE:
case HORDE_DATE_RECUR_MONTHLY_WEEKDAY: return _("Monthly");
case HORDE_DATE_RECUR_YEARLY_DATE:
case HORDE_DATE_RECUR_YEARLY_DAY:
case HORDE_DATE_RECUR_YEARLY_WEEKDAY: return _("Yearly");
}
}
/**
* Sets the length of time between recurrences of this event.
*
* @param integer $interval The time between recurrences.
*/
function setRecurInterval($interval)
{
if ($interval > 0) {
$this->recurInterval = $interval;
}
}
/**
* Retrieves the length of time between recurrences of this event.
*
* @return integer The number of seconds between recurrences.
*/
function getRecurInterval()
{
return $this->recurInterval;
}
/**
* Sets the number of recurrences of this event.
*
* @param integer $count The number of recurrences.
*/
function setRecurCount($count)
{
if ($count > 0) {
$this->recurCount = (int)$count;
// Recurrence counts and end dates are mutually exclusive.
$this->recurEnd = null;
} else {
$this->recurCount = null;
}
}
/**
* Retrieves the number of recurrences of this event.
*
* @return integer The number recurrences.
*/
function getRecurCount()
{
return $this->recurCount;
}
/**
* Returns whether this event has a recurrence with a fixed count.
*
* @return boolean True if this recurrence has a fixed count.
*/
function hasRecurCount()
{
return isset($this->recurCount);
}
/**
* Sets the start date of the recurrence interval.
*
* @param Horde_Date $start The recurrence start.
*/
function setRecurStart($start)
{
$this->start = new Horde_Date($start);
}
/**
* Retrieves the start date of the recurrence interval.
*
* @return Horde_Date The recurrence start.
*/
function getRecurStart()
{
return $this->start;
}
/**
* Sets the end date of the recurrence interval.
*
* @param Horde_Date $end The recurrence end.
*/
function setRecurEnd($end)
{
if (!empty($end)) {
// Recurrence counts and end dates are mutually exclusive.
$this->recurCount = null;
}
$this->recurEnd = new Horde_Date($end);
}
/**
* Retrieves the end date of the recurrence interval.
*
* @return Horde_Date The recurrence end.
*/
function getRecurEnd()
{
return $this->recurEnd;
}
/**
* Returns whether this event has a recurrence end.
*
* @return boolean True if this recurrence ends.
*/
function hasRecurEnd()
{
return isset($this->recurEnd) && isset($this->recurEnd->year) &&
$this->recurEnd->year != 9999;
}
/**
* Finds the next recurrence of this event that's after $afterDate.
*
* @param Horde_Date $afterDate Return events after this date.
*
* @return Horde_Date|boolean The date of the next recurrence or false
* if the event does not recur after
* $afterDate.
*/
function nextRecurrence($afterDate)
{
$after = new Horde_Date($afterDate);
$after->correct();
if ($this->start->compareDateTime($after) >= 0) {
return new Horde_Date($this->start);
}
if ($this->recurInterval == 0) {
return false;
}
switch ($this->getRecurType()) {
case HORDE_DATE_RECUR_DAILY:
$diff = Date_Calc::dateDiff($this->start->mday, $this->start->month, $this->start->year, $after->mday, $after->month, $after->year);
$recur = ceil($diff / $this->recurInterval);
if ($this->recurCount && $recur >= $this->recurCount) {
return false;
}
$recur *= $this->recurInterval;
$next = new Horde_Date($this->start);
list($next->mday, $next->month, $next->year) = explode('/', Date_Calc::daysToDate(Date_Calc::dateToDays($next->mday, $next->month, $next->year) + $recur, '%e/%m/%Y'));
if ((!$this->hasRecurEnd() ||
$next->compareDateTime($this->recurEnd) <= 0) &&
$next->compareDateTime($after) >= 0) {
return new Horde_Date($next);
}
break;
case HORDE_DATE_RECUR_WEEKLY:
if (empty($this->recurData)) {
return false;
}
list($start_week->mday, $start_week->month, $start_week->year) = explode('/', Date_Calc::beginOfWeek($this->start->mday, $this->start->month, $this->start->year, '%e/%m/%Y'));
$start_week->hour = $this->start->hour;
$start_week->min = $this->start->min;
$start_week->sec = $this->start->sec;
list($after_week->mday, $after_week->month, $after_week->year) = explode('/', Date_Calc::beginOfWeek($after->mday, $after->month, $after->year, '%e/%m/%Y'));
$after_week_end = new Horde_Date($after_week);
$after_week_end->mday += 7;
$after_week_end->correct();
$diff = Date_Calc::dateDiff($start_week->mday, $start_week->month, $start_week->year,
$after_week->mday, $after_week->month, $after_week->year);
$interval = $this->recurInterval * 7;
$repeats = floor($diff / $interval);
if ($diff % $interval < 7) {
$recur = $diff;
} else {
/**
* If the after_week is not in the first week interval the
* search needs to skip ahead a complete interval. The way it is
* calculated here means that an event that occurs every second
* week on Monday and Wednesday with the event actually starting
* on Tuesday or Wednesday will only have one incidence in the
* first week.
*/
$recur = $interval * ($repeats + 1);
}
if ($this->hasRecurCount()) {
$recurrences = 0;
/**
* Correct the number of recurrences by the number of events
* that lay between the start of the start week and the
* recurrence start.
*/
$next = new Horde_Date($start_week);
while ($next->compareDateTime($this->start) < 0) {
if ($this->recurOnDay((int)pow(2, $next->dayOfWeek()))) {
$recurrences--;
}
++$next->mday;
$next->correct();
}
if ($repeats > 0) {
$weekdays = $this->recurData;
$total_recurrences_per_week = 0;
while ($weekdays > 0) {
if ($weekdays % 2) {
$total_recurrences_per_week++;
}
$weekdays = ($weekdays - ($weekdays % 2)) / 2;
}
$recurrences += $total_recurrences_per_week * $repeats;
}
}
$next = $start_week;
list($next->mday, $next->month, $next->year) = explode('/', Date_Calc::daysToDate(Date_Calc::dateToDays($next->mday, $next->month, $next->year) + $recur, '%e/%m/%Y'));
$next = new Horde_Date($next);
while ($next->compareDateTime($after) < 0 &&
$next->compareDateTime($after_week_end) < 0) {
if ($this->hasRecurCount()
&& $next->compareDateTime($after) < 0
&& $this->recurOnDay((int)pow(2, $next->dayOfWeek()))) {
$recurrences++;
}
++$next->mday;
$next->correct();
}
if ($this->hasRecurCount() &&
$recurrences >= $this->recurCount) {
return false;
}
if (!$this->hasRecurEnd() ||
$next->compareDateTime($this->recurEnd) <= 0) {
if ($next->compareDateTime($after_week_end) >= 0) {
return $this->nextRecurrence($after_week_end);
}
while (!$this->recurOnDay((int)pow(2, $next->dayOfWeek())) &&
$next->compareDateTime($after_week_end) < 0) {
++$next->mday;
$next->correct();
}
if (!$this->hasRecurEnd() ||
$next->compareDateTime($this->recurEnd) <= 0) {
if ($next->compareDateTime($after_week_end) >= 0) {
return $this->nextRecurrence($after_week_end);
} else {
return $next;
}
}
}
break;
case HORDE_DATE_RECUR_MONTHLY_DATE:
$start = new Horde_Date($this->start);
if ($after->compareDateTime($start) < 0) {
$after = $start;
}
// If we're starting past this month's recurrence of the event,
// look in the next month on the day the event recurs.
if ($after->mday > $start->mday) {
++$after->month;
$after->mday = $start->mday;
$after->correct();
}
// Adjust $start to be the first match.
$offset = ($after->month - $start->month) + ($after->year - $start->year) * 12;
$offset = floor(($offset + $this->recurInterval - 1) / $this->recurInterval) * $this->recurInterval;
if ($this->recurCount &&
($offset / $this->recurInterval) >= $this->recurCount) {
return false;
}
$start->month += $offset;
$count = $offset / $this->recurInterval;
do {
if ($this->recurCount &&
$count++ >= $this->recurCount) {
return false;
}
// Don't correct for day overflow; we just skip February 30th,
// for example.
$start->correct(HORDE_DATE_MASK_MONTH);
// Bail if we've gone past the end of recurrence.
if ($this->hasRecurEnd() &&
$this->recurEnd->compareDateTime($start) < 0) {
return false;
}
if ($start->isValid()) {
return $start;
}
// If the interval is 12, and the date isn't valid, then we
// need to see if February 29th is an option. If not, then the
// event will _never_ recur, and we need to stop checking to
// avoid an infinite loop.
if ($this->recurInterval == 12 && ($start->month != 2 || $start->mday > 29)) {
return false;
}
// Add the recurrence interval.
$start->month += $this->recurInterval;
} while (true);
break;
case HORDE_DATE_RECUR_MONTHLY_WEEKDAY:
// Start with the start date of the event.
$estart = new Horde_Date($this->start);
// What day of the week, and week of the month, do we recur on?
if ($this->recurNthDay != 0) {
$nth = $this->recurNthDay < 0 ? 'last' : $this->recurNthDay;
$weekday = log($this->recurData, 2);
} else {
$nth = ceil($this->start->mday / 7);
$weekday = $estart->dayOfWeek();
}
// Adjust $estart to be the first candidate.
$offset = ($after->month - $estart->month) + ($after->year - $estart->year) * 12;
$offset = floor(($offset + $this->recurInterval - 1) / $this->recurInterval) * $this->recurInterval;
// Adjust our working date until it's after $after.
$estart->month += $offset - $this->recurInterval;
$count = $offset / $this->recurInterval;
do {
if ($this->recurCount &&
$count++ >= $this->recurCount) {
return false;
}
$estart->month += $this->recurInterval;
$estart->correct();
$next = new Horde_Date($estart);
if ($this->recurNthDay) {
list($next->mday, $next->month, $next->year) = explode('/', Date_Calc::nWeekdayOfMonth($nth, $weekday, $estart->month, $estart->year, '%e/%m/%Y'));
} else {
$next->setNthWeekday($weekday, $nth);
}
if ($next->compareDateTime($after) < 0) {
// We haven't made it past $after yet, try again.
continue;
}
if ($this->hasRecurEnd() &&
$next->compareDateTime($this->recurEnd) > 0) {
// We've gone past the end of recurrence; we can give up
// now.
return false;
}
// We have a candidate to return.
break;
} while (true);
return $next;
case HORDE_DATE_RECUR_YEARLY_DATE:
// Start with the start date of the event.
$estart = new Horde_Date($this->start);
if ($after->month > $estart->month ||
($after->month == $estart->month && $after->mday > $estart->mday)) {
++$after->year;
$after->month = $estart->month;
$after->mday = $estart->mday;
}
// Seperate case here for February 29th
if ($estart->month == 2 && $estart->mday == 29) {
while (!Horde_Date::isLeapYear($after->year)) {
++$after->year;
}
}
// Adjust $estart to be the first candidate.
$offset = $after->year - $estart->year;
if ($offset > 0) {
$offset = floor(($offset + $this->recurInterval - 1) / $this->recurInterval) * $this->recurInterval;
$estart->year += $offset;
}
// We've gone past the end of recurrence; give up.
if ($this->recurCount &&
$offset >= $this->recurCount) {
return false;
}
if ($this->hasRecurEnd() &&
$this->recurEnd->compareDateTime($estart) < 0) {
return false;
}
return $estart;
case HORDE_DATE_RECUR_YEARLY_DAY:
// Check count first.
$dayofyear = $this->start->dayOfYear();
$count = ($after->year - $this->start->year) / $this->recurInterval + 1;
if ($this->recurCount &&
($count > $this->recurCount ||
($count == $this->recurCount &&
$after->dayOfYear() > $dayofyear))) {
return false;
}
// Start with a rough interval.
$estart = new Horde_Date($this->start);
$estart->year += floor($count - 1) * $this->recurInterval;
// Now add the difference to the required day of year.
$estart->mday += $dayofyear - $estart->dayOfYear();
$estart->correct();
// Add an interval if the estimation was wrong.
if ($estart->compareDate($after) < 0) {
$estart->year += $this->recurInterval;
$estart->mday += $dayofyear - $estart->dayOfYear();
$estart->correct();
}
// We've gone past the end of recurrence; give up.
if ($this->hasRecurEnd() &&
$this->recurEnd->compareDateTime($estart) < 0) {
return false;
}
return $estart;
case HORDE_DATE_RECUR_YEARLY_WEEKDAY:
// Start with the start date of the event.
$estart = new Horde_Date($this->start);
// What day of the week, and week of the month, do we recur on?
if ($this->recurNthDay != 0) {
$nth = $this->recurNthDay < 0 ? 'last' : $this->recurNthDay;
$weekday = log($this->recurData, 2);
} else {
$nth = ceil($this->start->mday / 7);
$weekday = $estart->dayOfWeek();
}
// set month from recurrence rule (FIXME: support more than one month)
if ($this->recurMonths) {
$estart->month = $this->recurMonths[0];
}
// Adjust $estart to be the first candidate.
$offset = floor(($after->year - $estart->year + $this->recurInterval - 1) / $this->recurInterval) * $this->recurInterval;
// Adjust our working date until it's after $after.
$estart->year += $offset - $this->recurInterval;
$count = $offset / $this->recurInterval;
do {
if ($this->recurCount &&
$count++ >= $this->recurCount) {
return false;
}
$estart->year += $this->recurInterval;
$estart->correct();
$next = new Horde_Date($estart);
if ($this->recurNthDay) {
list($next->mday, $next->month, $next->year) = explode('/', Date_Calc::nWeekdayOfMonth($nth, $weekday, $estart->month, $estart->year, '%e/%m/%Y'));
} else {
$next->setNthWeekday($weekday, $nth);
}
if ($next->compareDateTime($after) < 0) {
// We haven't made it past $after yet, try again.
continue;
}
if ($this->hasRecurEnd() &&
$next->compareDateTime($this->recurEnd) > 0) {
// We've gone past the end of recurrence; we can give up
// now.
return false;
}
// We have a candidate to return.
break;
} while (true);
return $next;
}
// We didn't find anything, the recurType was bad, or something else
// went wrong - return false.
return false;
}
/**
* Returns whether this event has any date that matches the recurrence
* rules and is not an exception.
*
* @return boolean True if an active recurrence exists.
*/
function hasActiveRecurrence()
{
if (!$this->hasRecurEnd()) {
return true;
}
$next = $this->nextRecurrence(new Horde_Date($this->start));
while (is_object($next)) {
if (!$this->hasException($next->year, $next->month, $next->mday) &&
!$this->hasCompletion($next->year, $next->month, $next->mday)) {
return true;
}
$next = $this->nextRecurrence(array('year' => $next->year,
'month' => $next->month,
'mday' => $next->mday + 1,
'hour' => $next->hour,
'min' => $next->min,
'sec' => $next->sec));
}
return false;
}
/**
* Returns the next active recurrence.
*
* @param Horde_Date $afterDate Return events after this date.
*
* @return Horde_Date|boolean The date of the next active
* recurrence or false if the event
* has no active recurrence after
* $afterDate.
*/
function nextActiveRecurrence($afterDate)
{
$next = $this->nextRecurrence($afterDate);
while (is_object($next)) {
if (!$this->hasException($next->year, $next->month, $next->mday) &&
!$this->hasCompletion($next->year, $next->month, $next->mday)) {
return $next;
}
$next->mday++;
$next = $this->nextRecurrence($next);
}
return false;
}
/**
* Adds an exception to a recurring event.
*
* @param integer $year The year of the execption.
* @param integer $month The month of the execption.
* @param integer $mday The day of the month of the exception.
*/
function addException($year, $month, $mday)
{
$this->exceptions[] = sprintf('%04d%02d%02d', $year, $month, $mday);
}
/**
* Deletes an exception from a recurring event.
*
* @param integer $year The year of the execption.
* @param integer $month The month of the execption.
* @param integer $mday The day of the month of the exception.
*/
function deleteException($year, $month, $mday)
{
$key = array_search(sprintf('%04d%02d%02d', $year, $month, $mday), $this->exceptions);
if ($key !== false) {
unset($this->exceptions[$key]);
}
}
/**
* Checks if an exception exists for a given reccurence of an event.
*
* @param integer $year The year of the reucrance.
* @param integer $month The month of the reucrance.
* @param integer $mday The day of the month of the reucrance.
*
* @return boolean True if an exception exists for the given date.
*/
function hasException($year, $month, $mday)
{
return in_array(sprintf('%04d%02d%02d', $year, $month, $mday),
$this->getExceptions());
}
/**
* Retrieves all the exceptions for this event.
*
* @return array Array containing the dates of all the exceptions in
* YYYYMMDD form.
*/
function getExceptions()
{
return $this->exceptions;
}
/**
* Adds a completion to a recurring event.
*
* @param integer $year The year of the execption.
* @param integer $month The month of the execption.
* @param integer $mday The day of the month of the completion.
*/
function addCompletion($year, $month, $mday)
{
$this->completions[] = sprintf('%04d%02d%02d', $year, $month, $mday);
}
/**
* Deletes a completion from a recurring event.
*
* @param integer $year The year of the execption.
* @param integer $month The month of the execption.
* @param integer $mday The day of the month of the completion.
*/
function deleteCompletion($year, $month, $mday)
{
$key = array_search(sprintf('%04d%02d%02d', $year, $month, $mday), $this->completions);
if ($key !== false) {
unset($this->completions[$key]);
}
}
/**
* Checks if a completion exists for a given reccurence of an event.
*
* @param integer $year The year of the reucrance.
* @param integer $month The month of the recurrance.
* @param integer $mday The day of the month of the recurrance.
*
* @return boolean True if a completion exists for the given date.
*/
function hasCompletion($year, $month, $mday)
{
return in_array(sprintf('%04d%02d%02d', $year, $month, $mday),
$this->getCompletions());
}
/**
* Retrieves all the completions for this event.
*
* @return array Array containing the dates of all the completions in
* YYYYMMDD form.
*/
function getCompletions()
{
return $this->completions;
}
/**
* Parses a vCalendar 1.0 recurrence rule.
*
* @link http://www.imc.org/pdi/vcal-10.txt
* @link http://www.shuchow.com/vCalAddendum.html
*
* @param string $rrule A vCalendar 1.0 conform RRULE value.
*/
function fromRRule10($rrule)
{
if (!$rrule) {
return;
}
if (!preg_match('/([A-Z]+)(\d+)?(.*)/', $rrule, $matches)) {
// No recurrence data - event does not recur.
$this->setRecurType(HORDE_DATE_RECUR_NONE);
}
// Always default the recurInterval to 1.
$this->setRecurInterval(!empty($matches[2]) ? $matches[2] : 1);
$remainder = trim($matches[3]);
switch ($matches[1]) {
case 'D':
$this->setRecurType(HORDE_DATE_RECUR_DAILY);
break;
case 'W':
$this->setRecurType(HORDE_DATE_RECUR_WEEKLY);
if (!empty($remainder)) {
$maskdays = array('SU' => HORDE_DATE_MASK_SUNDAY,
'MO' => HORDE_DATE_MASK_MONDAY,
'TU' => HORDE_DATE_MASK_TUESDAY,
'WE' => HORDE_DATE_MASK_WEDNESDAY,
'TH' => HORDE_DATE_MASK_THURSDAY,
'FR' => HORDE_DATE_MASK_FRIDAY,
'SA' => HORDE_DATE_MASK_SATURDAY);
$mask = 0;
while (preg_match('/^ ?[A-Z]{2} ?/', $remainder, $matches)) {
$day = trim($matches[0]);
$remainder = substr($remainder, strlen($matches[0]));
$mask |= $maskdays[$day];
}
$this->setRecurOnDay($mask);
} else {
// Recur on the day of the week of the original recurrence.
$maskdays = array(HORDE_DATE_SUNDAY => HORDE_DATE_MASK_SUNDAY,
HORDE_DATE_MONDAY => HORDE_DATE_MASK_MONDAY,
HORDE_DATE_TUESDAY => HORDE_DATE_MASK_TUESDAY,
HORDE_DATE_WEDNESDAY => HORDE_DATE_MASK_WEDNESDAY,
HORDE_DATE_THURSDAY => HORDE_DATE_MASK_THURSDAY,
HORDE_DATE_FRIDAY => HORDE_DATE_MASK_FRIDAY,
HORDE_DATE_SATURDAY => HORDE_DATE_MASK_SATURDAY);
$this->setRecurOnDay($maskdays[$this->start->dayOfWeek()]);
}
break;
case 'MP':
$this->setRecurType(HORDE_DATE_RECUR_MONTHLY_WEEKDAY);
break;
case 'MD':
$this->setRecurType(HORDE_DATE_RECUR_MONTHLY_DATE);
break;
case 'YM':
$this->setRecurType(HORDE_DATE_RECUR_YEARLY_DATE);
break;
case 'YD':
$this->setRecurType(HORDE_DATE_RECUR_YEARLY_DAY);
break;
}
// We don't support modifiers at the moment, strip them.
while ($remainder && !preg_match('/^(#\d+|\d{8})($| |T\d{6})/', $remainder)) {
$remainder = substr($remainder, 1);
}
if (!empty($remainder)) {
if (strpos($remainder, '#') === 0) {
$this->setRecurCount(substr($remainder, 1));
} else {
list($year, $month, $mday) = sscanf($remainder, '%04d%02d%02d');
$this->setRecurEnd(new Horde_Date(array('year' => $year,
'month' => $month,
'mday' => $mday)));
}
}
}
/**
* Creates a vCalendar 1.0 recurrence rule.
*
* @link http://www.imc.org/pdi/vcal-10.txt
* @link http://www.shuchow.com/vCalAddendum.html
*
* @param Horde_iCalendar $calendar A Horde_iCalendar object instance.
*
* @return string A vCalendar 1.0 conform RRULE value.
*/
function toRRule10($calendar)
{
switch ($this->recurType) {
case HORDE_DATE_RECUR_NONE:
return '';
case HORDE_DATE_RECUR_DAILY:
$rrule = 'D' . $this->recurInterval;
break;
case HORDE_DATE_RECUR_WEEKLY:
$rrule = 'W' . $this->recurInterval;
$vcaldays = array('SU', 'MO', 'TU', 'WE', 'TH', 'FR', 'SA');
for ($i = 0; $i <= 7 ; ++$i) {
if ($this->recurOnDay(pow(2, $i))) {
$rrule .= ' ' . $vcaldays[$i];
}
}
break;
case HORDE_DATE_RECUR_MONTHLY_DATE:
$rrule = 'MD' . $this->recurInterval . ' ' . trim($this->start->mday);
break;
case HORDE_DATE_RECUR_MONTHLY_WEEKDAY:
$nth_weekday = (int)($this->start->mday / 7);
if (($this->start->mday % 7) > 0) {
$nth_weekday++;
}
$vcaldays = array('SU', 'MO', 'TU', 'WE', 'TH', 'FR', 'SA');
$rrule = 'MP' . $this->recurInterval . ' ' . $nth_weekday . '+ ' . $vcaldays[$this->start->dayOfWeek()];
break;
case HORDE_DATE_RECUR_YEARLY_DATE:
$rrule = 'YM' . $this->recurInterval . ' ' . trim($this->start->month);
break;
case HORDE_DATE_RECUR_YEARLY_DAY:
$rrule = 'YD' . $this->recurInterval . ' ' . $this->start->dayOfYear();
break;
default:
return '';
}
if ($this->hasRecurEnd()) {
$recurEnd = new Horde_Date($this->recurEnd);
$recurEnd->mday++;
return $rrule . ' ' . $calendar->_exportDateTime($recurEnd);
}
return $rrule . ' #' . (int)$this->getRecurCount();
}
/**
* Parses an iCalendar 2.0 recurrence rule.
*
* @link http://rfc.net/rfc2445.html#s4.3.10
* @link http://rfc.net/rfc2445.html#s4.8.5
* @link http://www.shuchow.com/vCalAddendum.html
*
* @param string $rrule An iCalendar 2.0 conform RRULE value.
*/
function fromRRule20($rrule)
{
// Parse the recurrence rule into keys and values.
$rdata = array();
$parts = explode(';', $rrule);
foreach ($parts as $part) {
list($key, $value) = explode('=', $part, 2);
$rdata[strtoupper($key)] = $value;
}
if (isset($rdata['FREQ'])) {
// Always default the recurInterval to 1.
$this->setRecurInterval(isset($rdata['INTERVAL']) ? $rdata['INTERVAL'] : 1);
$maskdays = array('SU' => HORDE_DATE_MASK_SUNDAY,
'MO' => HORDE_DATE_MASK_MONDAY,
'TU' => HORDE_DATE_MASK_TUESDAY,
'WE' => HORDE_DATE_MASK_WEDNESDAY,
'TH' => HORDE_DATE_MASK_THURSDAY,
'FR' => HORDE_DATE_MASK_FRIDAY,
'SA' => HORDE_DATE_MASK_SATURDAY);
switch (strtoupper($rdata['FREQ'])) {
case 'DAILY':
$this->setRecurType(HORDE_DATE_RECUR_DAILY);
break;
case 'WEEKLY':
$this->setRecurType(HORDE_DATE_RECUR_WEEKLY);
if (isset($rdata['BYDAY'])) {
$days = explode(',', $rdata['BYDAY']);
$mask = 0;
foreach ($days as $day) {
$mask |= $maskdays[$day];
}
$this->setRecurOnDay($mask);
} else {
// Recur on the day of the week of the original
// recurrence.
$maskdays = array(
HORDE_DATE_SUNDAY => HORDE_DATE_MASK_SUNDAY,
HORDE_DATE_MONDAY => HORDE_DATE_MASK_MONDAY,
HORDE_DATE_TUESDAY => HORDE_DATE_MASK_TUESDAY,
HORDE_DATE_WEDNESDAY => HORDE_DATE_MASK_WEDNESDAY,
HORDE_DATE_THURSDAY => HORDE_DATE_MASK_THURSDAY,
HORDE_DATE_FRIDAY => HORDE_DATE_MASK_FRIDAY,
HORDE_DATE_SATURDAY => HORDE_DATE_MASK_SATURDAY);
$this->setRecurOnDay($maskdays[$this->start->dayOfWeek()]);
}
break;
case 'MONTHLY':
if (isset($rdata['BYDAY'])) {
$this->setRecurType(HORDE_DATE_RECUR_MONTHLY_WEEKDAY);
if (preg_match('/(-?[1-4])([A-Z]+)/', $rdata['BYDAY'], $m)) {
$this->setRecurOnDay($maskdays[$m[2]]);
$this->setRecurNthWeekday($m[1]);
}
} else {
$this->setRecurType(HORDE_DATE_RECUR_MONTHLY_DATE);
}
break;
case 'YEARLY':
if (isset($rdata['BYYEARDAY'])) {
$this->setRecurType(HORDE_DATE_RECUR_YEARLY_DAY);
} elseif (isset($rdata['BYDAY'])) {
$this->setRecurType(HORDE_DATE_RECUR_YEARLY_WEEKDAY);
if (preg_match('/(-?[1-4])([A-Z]+)/', $rdata['BYDAY'], $m)) {
$this->setRecurOnDay($maskdays[$m[2]]);
$this->setRecurNthWeekday($m[1]);
}
if ($rdata['BYMONTH']) {
$months = explode(',', $rdata['BYMONTH']);
$this->setRecurByMonth($months);
}
} else {
$this->setRecurType(HORDE_DATE_RECUR_YEARLY_DATE);
}
break;
}
if (isset($rdata['UNTIL'])) {
list($year, $month, $mday) = sscanf($rdata['UNTIL'],
'%04d%02d%02d');
$this->setRecurEnd(new Horde_Date(array('year' => $year,
'month' => $month,
'mday' => $mday)));
}
if (isset($rdata['COUNT'])) {
$this->setRecurCount($rdata['COUNT']);
}
} else {
// No recurrence data - event does not recur.
$this->setRecurType(HORDE_DATE_RECUR_NONE);
}
}
/**
* Creates an iCalendar 2.0 recurrence rule.
*
* @link http://rfc.net/rfc2445.html#s4.3.10
* @link http://rfc.net/rfc2445.html#s4.8.5
* @link http://www.shuchow.com/vCalAddendum.html
*
* @param Horde_iCalendar $calendar A Horde_iCalendar object instance.
*
* @return string An iCalendar 2.0 conform RRULE value.
*/
function toRRule20($calendar)
{
switch ($this->recurType) {
case HORDE_DATE_RECUR_NONE:
return '';
case HORDE_DATE_RECUR_DAILY:
$rrule = 'FREQ=DAILY;INTERVAL=' . $this->recurInterval;
break;
case HORDE_DATE_RECUR_WEEKLY:
$rrule = 'FREQ=WEEKLY;INTERVAL=' . $this->recurInterval . ';BYDAY=';
$vcaldays = array('SU', 'MO', 'TU', 'WE', 'TH', 'FR', 'SA');
for ($i = $flag = 0; $i <= 7 ; ++$i) {
if ($this->recurOnDay(pow(2, $i))) {
if ($flag) {
$rrule .= ',';
}
$rrule .= $vcaldays[$i];
$flag = true;
}
}
break;
case HORDE_DATE_RECUR_MONTHLY_DATE:
$rrule = 'FREQ=MONTHLY;INTERVAL=' . $this->recurInterval;
break;
case HORDE_DATE_RECUR_MONTHLY_WEEKDAY:
if ($this->recurNthDay != 0) {
$nth_weekday = $this->recurNthDay;
$day_of_week = log($this->recurData, 2);
} else {
$day_of_week = $this->start->dayOfWeek();
$nth_weekday = (int)($this->start->mday / 7);
if (($this->start->mday % 7) > 0) {
$nth_weekday++;
}
}
$vcaldays = array('SU', 'MO', 'TU', 'WE', 'TH', 'FR', 'SA');
$rrule = 'FREQ=MONTHLY;INTERVAL=' . $this->recurInterval
. ';BYDAY=' . $nth_weekday . $vcaldays[$day_of_week];
break;
case HORDE_DATE_RECUR_YEARLY_DATE:
$rrule = 'FREQ=YEARLY;INTERVAL=' . $this->recurInterval;
break;
case HORDE_DATE_RECUR_YEARLY_DAY:
$rrule = 'FREQ=YEARLY;INTERVAL=' . $this->recurInterval
. ';BYYEARDAY=' . $this->start->dayOfYear();
break;
case HORDE_DATE_RECUR_YEARLY_WEEKDAY:
if ($this->recurNthDay != 0) {
$nth_weekday = $this->recurNthDay;
$day_of_week = log($this->recurData, 2);
} else {
$day_of_week = $this->start->dayOfWeek();
$nth_weekday = (int)($this->start->mday / 7);
if (($this->start->mday % 7) > 0) {
$nth_weekday++;
}
}
$months = !empty($this->recurMonths) ? join(',', $this->recurMonths) : $this->start->month;
$vcaldays = array('SU', 'MO', 'TU', 'WE', 'TH', 'FR', 'SA');
$rrule = 'FREQ=YEARLY;INTERVAL=' . $this->recurInterval
. ';BYDAY='
. $nth_weekday
. $vcaldays[$day_of_week]
. ';BYMONTH=' . $months;
break;
}
if ($this->hasRecurEnd()) {
$recurEnd = new Horde_Date($this->recurEnd);
$recurEnd->mday++;
$rrule .= ';UNTIL=' . $calendar->_exportDateTime($recurEnd);
}
if ($count = $this->getRecurCount()) {
$rrule .= ';COUNT=' . $count;
}
return $rrule;
}
/**
* Parses the recurrence data from a hash.
*
* @param array $hash The hash to convert.
*
* @return boolean True if the hash seemed valid, false otherwise.
*/
function fromHash($hash)
{
if (!isset($hash['interval']) || !isset($hash['interval']) ||
!isset($hash['range-type'])) {
$this->setRecurType(HORDE_DATE_RECUR_NONE);
return false;
}
$month2number = array(
'january' => 1,
'february' => 2,
'march' => 3,
'april' => 4,
'may' => 5,
'june' => 6,
'july' => 7,
'august' => 8,
'september' => 9,
'october' => 10,
'november' => 11,
'december' => 12,
);
$this->setRecurInterval((int) $hash['interval']);
$parse_day = false;
$set_daymask = false;
$update_month = false;
$update_daynumber = false;
$update_weekday = false;
$nth_weekday = -1;
switch ($hash['cycle']) {
case 'daily':
$this->setRecurType(HORDE_DATE_RECUR_DAILY);
break;
case 'weekly':
$this->setRecurType(HORDE_DATE_RECUR_WEEKLY);
$parse_day = true;
$set_daymask = true;
break;
case 'monthly':
if (!isset($hash['daynumber'])) {
$this->setRecurType(HORDE_DATE_RECUR_NONE);
return false;
}
switch ($hash['type']) {
case 'daynumber':
$this->setRecurType(HORDE_DATE_RECUR_MONTHLY_DATE);
$update_daynumber = true;
break;
case 'weekday':
$this->setRecurType(HORDE_DATE_RECUR_MONTHLY_WEEKDAY);
$this->setRecurNthWeekday($hash['daynumber']);
$parse_day = true;
$set_daymask = true;
break;
}
break;
case 'yearly':
if (!isset($hash['type'])) {
$this->setRecurType(HORDE_DATE_RECUR_NONE);
return false;
}
switch ($hash['type']) {
case 'monthday':
$this->setRecurType(HORDE_DATE_RECUR_YEARLY_DATE);
$update_month = true;
$update_daynumber = true;
break;
case 'yearday':
if (!isset($hash['month'])) {
$this->setRecurType(HORDE_DATE_RECUR_NONE);
return false;
}
$this->setRecurType(HORDE_DATE_RECUR_YEARLY_DAY);
// Start counting days in January.
$hash['month'] = 'january';
$update_month = true;
$update_daynumber = true;
break;
case 'weekday':
if (!isset($hash['daynumber'])) {
$this->setRecurType(HORDE_DATE_RECUR_NONE);
return false;
}
$this->setRecurType(HORDE_DATE_RECUR_YEARLY_WEEKDAY);
$this->setRecurNthWeekday($hash['daynumber']);
$parse_day = true;
$set_daymask = true;
if ($hash['month'] && isset($month2number[$hash['month']])) {
$this->setRecurByMonth($month2number[$hash['month']]);
}
break;
}
}
switch ($hash['range-type']) {
case 'number':
if (!isset($hash['range'])) {
$this->setRecurType(HORDE_DATE_RECUR_NONE);
return false;
}
$this->setRecurCount((int) $hash['range']);
break;
case 'date':
$recur_end = new Horde_Date($hash['range']);
$recur_end->hour = 23;
$recur_end->min = 59;
$recur_end->sec = 59;
$this->setRecurEnd($recur_end);
break;
}
// Need to parse <day>?
$last_found_day = -1;
if ($parse_day) {
if (!isset($hash['day'])) {
$this->setRecurType(HORDE_DATE_RECUR_NONE);
return false;
}
$mask = 0;
$bits = array(
'monday' => HORDE_DATE_MASK_MONDAY,
'tuesday' => HORDE_DATE_MASK_TUESDAY,
'wednesday' => HORDE_DATE_MASK_WEDNESDAY,
'thursday' => HORDE_DATE_MASK_THURSDAY,
'friday' => HORDE_DATE_MASK_FRIDAY,
'saturday' => HORDE_DATE_MASK_SATURDAY,
'sunday' => HORDE_DATE_MASK_SUNDAY,
);
$days = array(
'monday' => HORDE_DATE_MONDAY,
'tuesday' => HORDE_DATE_TUESDAY,
'wednesday' => HORDE_DATE_WEDNESDAY,
'thursday' => HORDE_DATE_THURSDAY,
'friday' => HORDE_DATE_FRIDAY,
'saturday' => HORDE_DATE_SATURDAY,
'sunday' => HORDE_DATE_SUNDAY,
);
foreach ($hash['day'] as $day) {
// Validity check.
if (empty($day) || !isset($bits[$day])) {
continue;
}
$mask |= $bits[$day];
$last_found_day = $days[$day];
}
if ($set_daymask) {
$this->setRecurOnDay($mask);
}
}
if ($update_month || $update_daynumber || $update_weekday) {
if ($update_month) {
if (isset($month2number[$hash['month']])) {
$this->start->month = $month2number[$hash['month']];
}
}
if ($update_daynumber) {
if (!isset($hash['daynumber'])) {
$this->setRecurType(HORDE_DATE_RECUR_NONE);
return false;
}
$this->start->mday = $hash['daynumber'];
}
if ($update_weekday) {
$this->start->setNthWeekday($last_found_day, $nth_weekday);
}
$this->start->correct();
}
// Exceptions.
if (isset($hash['exceptions'])) {
$this->exceptions = $hash['exceptions'];
}
if (isset($hash['completions'])) {
$this->completions = $hash['completions'];
}
return true;
}
/**
* Export this object into a hash.
*
* @return array The recurrence hash.
*/
function toHash()
{
if ($this->getRecurType() == HORDE_DATE_RECUR_NONE) {
return array();
}
$day2number = array(
0 => 'sunday',
1 => 'monday',
2 => 'tuesday',
3 => 'wednesday',
4 => 'thursday',
5 => 'friday',
6 => 'saturday'
);
$month2number = array(
1 => 'january',
2 => 'february',
3 => 'march',
4 => 'april',
5 => 'may',
6 => 'june',
7 => 'july',
8 => 'august',
9 => 'september',
10 => 'october',
11 => 'november',
12 => 'december'
);
$hash = array('interval' => $this->getRecurInterval());
$start = $this->getRecurStart();
switch ($this->getRecurType()) {
case HORDE_DATE_RECUR_DAILY:
$hash['cycle'] = 'daily';
break;
case HORDE_DATE_RECUR_WEEKLY:
$hash['cycle'] = 'weekly';
$bits = array(
'monday' => HORDE_DATE_MASK_MONDAY,
'tuesday' => HORDE_DATE_MASK_TUESDAY,
'wednesday' => HORDE_DATE_MASK_WEDNESDAY,
'thursday' => HORDE_DATE_MASK_THURSDAY,
'friday' => HORDE_DATE_MASK_FRIDAY,
'saturday' => HORDE_DATE_MASK_SATURDAY,
'sunday' => HORDE_DATE_MASK_SUNDAY,
);
$days = array();
foreach($bits as $name => $bit) {
if ($this->recurOnDay($bit)) {
$days[] = $name;
}
}
$hash['day'] = $days;
break;
case HORDE_DATE_RECUR_MONTHLY_DATE:
$hash['cycle'] = 'monthly';
$hash['type'] = 'daynumber';
$hash['daynumber'] = $start->mday;
break;
case HORDE_DATE_RECUR_MONTHLY_WEEKDAY:
$hash['cycle'] = 'monthly';
$hash['type'] = 'weekday';
$hash['daynumber'] = $start->weekOfMonth();
$hash['day'] = array ($day2number[$start->dayOfWeek()]);
break;
case HORDE_DATE_RECUR_YEARLY_DATE:
$hash['cycle'] = 'yearly';
$hash['type'] = 'monthday';
$hash['daynumber'] = $start->mday;
$hash['month'] = $month2number[$start->month];
break;
case HORDE_DATE_RECUR_YEARLY_DAY:
$hash['cycle'] = 'yearly';
$hash['type'] = 'yearday';
$hash['daynumber'] = $start->dayOfYear();
break;
case HORDE_DATE_RECUR_YEARLY_WEEKDAY:
$hash['cycle'] = 'yearly';
$hash['type'] = 'weekday';
$hash['daynumber'] = $start->weekOfMonth();
$hash['day'] = array ($day2number[$start->dayOfWeek()]);
$hash['month'] = $month2number[$start->month];
}
if ($this->hasRecurCount()) {
$hash['range-type'] = 'number';
$hash['range'] = $this->getRecurCount();
} elseif ($this->hasRecurEnd()) {
$date = $this->getRecurEnd();
$hash['range-type'] = 'date';
$hash['range'] = $date->datestamp();
} else {
$hash['range-type'] = 'none';
$hash['range'] = '';
}
// Recurrence exceptions
$hash['exceptions'] = $this->exceptions;
$hash['completions'] = $this->completions;
return $hash;
}
}

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Horde_Date_Recurrence.php (221 KB)

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