File Source for DateTime.php

<?php
/**
* PHPExcel
*
* Copyright (c) 2006 - 2011 PHPExcel
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* @category PHPExcel
* @package PHPExcel_Calculation
* @copyright Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
* @license http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt LGPL
* @version 1.7.6, 2011-02-27
*/
/** PHPExcel root directory */
if (!defined('PHPEXCEL_ROOT')) {
/**
* @ignore
*/
define('PHPEXCEL_ROOT', dirname(__FILE__) . '/../../');
require(PHPEXCEL_ROOT . 'PHPExcel/Autoloader.php');
}
/**
* PHPExcel_Calculation_DateTime
*
* @category PHPExcel
* @package PHPExcel_Calculation
* @copyright Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
*/
class PHPExcel_Calculation_DateTime {
public static function _isLeapYear($year) {
return ((($year % 4) == 0) && (($year % 100) != 0) || (($year % 400) == 0));
} // function _isLeapYear()
private static function _dateDiff360($startDay, $startMonth, $startYear, $endDay, $endMonth, $endYear, $methodUS) {
if ($startDay == 31) {
--$startDay;
} elseif ($methodUS && ($startMonth == 2 && ($startDay == 29 || ($startDay == 28 && !self::_isLeapYear($startYear))))) {
$startDay = 30;
}
if ($endDay == 31) {
if ($methodUS && $startDay != 30) {
$endDay = 1;
if ($endMonth == 12) {
++$endYear;
$endMonth = 1;
} else {
++$endMonth;
}
} else {
$endDay = 30;
}
}
return $endDay + $endMonth * 30 + $endYear * 360 - $startDay - $startMonth * 30 - $startYear * 360;
} // function _dateDiff360()
/**
* _getDateValue
*
* @param string $dateValue
* @return mixed Excel date/time serial value, or string if error
*/
public static function _getDateValue($dateValue) {
if (!is_numeric($dateValue)) {
if ((is_string($dateValue)) && (PHPExcel_Calculation_Functions::getCompatibilityMode() == PHPExcel_Calculation_Functions::COMPATIBILITY_GNUMERIC)) {
return PHPExcel_Calculation_Functions::VALUE();
}
if ((is_object($dateValue)) && ($dateValue instanceof PHPExcel_Shared_Date::$dateTimeObjectType)) {
$dateValue = PHPExcel_Shared_Date::PHPToExcel($dateValue);
} else {
$saveReturnDateType = PHPExcel_Calculation_Functions::getReturnDateType();
PHPExcel_Calculation_Functions::setReturnDateType(PHPExcel_Calculation_Functions::RETURNDATE_EXCEL);
$dateValue = self::DATEVALUE($dateValue);
PHPExcel_Calculation_Functions::setReturnDateType($saveReturnDateType);
}
}
return $dateValue;
} // function _getDateValue()
/**
* _getTimeValue
*
* @param string $timeValue
* @return mixed Excel date/time serial value, or string if error
*/
private static function _getTimeValue($timeValue) {
$saveReturnDateType = PHPExcel_Calculation_Functions::getReturnDateType();
PHPExcel_Calculation_Functions::setReturnDateType(PHPExcel_Calculation_Functions::RETURNDATE_EXCEL);
$timeValue = self::TIMEVALUE($timeValue);
PHPExcel_Calculation_Functions::setReturnDateType($saveReturnDateType);
return $timeValue;
} // function _getTimeValue()
private static function _adjustDateByMonths($dateValue = 0, $adjustmentMonths = 0) {
// Execute function
$PHPDateObject = PHPExcel_Shared_Date::ExcelToPHPObject($dateValue);
$oMonth = (int) $PHPDateObject->format('m');
$oYear = (int) $PHPDateObject->format('Y');
$adjustmentMonthsString = (string) $adjustmentMonths;
if ($adjustmentMonths > 0) {
$adjustmentMonthsString = '+'.$adjustmentMonths;
}
if ($adjustmentMonths != 0) {
$PHPDateObject->modify($adjustmentMonthsString.' months');
}
$nMonth = (int) $PHPDateObject->format('m');
$nYear = (int) $PHPDateObject->format('Y');
$monthDiff = ($nMonth - $oMonth) + (($nYear - $oYear) * 12);
if ($monthDiff != $adjustmentMonths) {
$adjustDays = (int) $PHPDateObject->format('d');
$adjustDaysString = '-'.$adjustDays.' days';
$PHPDateObject->modify($adjustDaysString);
}
return $PHPDateObject;
} // function _adjustDateByMonths()
/**
* DATETIMENOW
*
* @return mixed Excel date/time serial value, PHP date/time serial value or PHP date/time object,
* depending on the value of the ReturnDateType flag
*/
public static function DATETIMENOW() {
$saveTimeZone = date_default_timezone_get();
date_default_timezone_set('UTC');
$retValue = False;
switch (PHPExcel_Calculation_Functions::getReturnDateType()) {
case PHPExcel_Calculation_Functions::RETURNDATE_EXCEL :
$retValue = (float) PHPExcel_Shared_Date::PHPToExcel(time());
break;
case PHPExcel_Calculation_Functions::RETURNDATE_PHP_NUMERIC :
$retValue = (integer) time();
break;
case PHPExcel_Calculation_Functions::RETURNDATE_PHP_OBJECT :
$retValue = new DateTime();
break;
}
date_default_timezone_set($saveTimeZone);
return $retValue;
} // function DATETIMENOW()
/**
* DATENOW
*
* @return mixed Excel date/time serial value, PHP date/time serial value or PHP date/time object,
* depending on the value of the ReturnDateType flag
*/
public static function DATENOW() {
$saveTimeZone = date_default_timezone_get();
date_default_timezone_set('UTC');
$retValue = False;
$excelDateTime = floor(PHPExcel_Shared_Date::PHPToExcel(time()));
switch (PHPExcel_Calculation_Functions::getReturnDateType()) {
case PHPExcel_Calculation_Functions::RETURNDATE_EXCEL :
$retValue = (float) $excelDateTime;
break;
case PHPExcel_Calculation_Functions::RETURNDATE_PHP_NUMERIC :
$retValue = (integer) PHPExcel_Shared_Date::ExcelToPHP($excelDateTime) - 3600;
break;
case PHPExcel_Calculation_Functions::RETURNDATE_PHP_OBJECT :
$retValue = PHPExcel_Shared_Date::ExcelToPHPObject($excelDateTime);
break;
}
date_default_timezone_set($saveTimeZone);
return $retValue;
} // function DATENOW()
/**
* DATE
*
* @param long $year
* @param long $month
* @param long $day
* @return mixed Excel date/time serial value, PHP date/time serial value or PHP date/time object,
* depending on the value of the ReturnDateType flag
*/
public static function DATE($year = 0, $month = 1, $day = 1) {
$year = (integer) PHPExcel_Calculation_Functions::flattenSingleValue($year);
$month = (integer) PHPExcel_Calculation_Functions::flattenSingleValue($month);
$day = (integer) PHPExcel_Calculation_Functions::flattenSingleValue($day);
$baseYear = PHPExcel_Shared_Date::getExcelCalendar();
// Validate parameters
if ($year < ($baseYear-1900)) {
return PHPExcel_Calculation_Functions::NaN();
}
if ((($baseYear-1900) != 0) && ($year < $baseYear) && ($year >= 1900)) {
return PHPExcel_Calculation_Functions::NaN();
}
if (($year < $baseYear) && ($year >= ($baseYear-1900))) {
$year += 1900;
}
if ($month < 1) {
// Handle year/month adjustment if month < 1
--$month;
$year += ceil($month / 12) - 1;
$month = 13 - abs($month % 12);
} elseif ($month > 12) {
// Handle year/month adjustment if month > 12
$year += floor($month / 12);
$month = ($month % 12);
}
// Re-validate the year parameter after adjustments
if (($year < $baseYear) || ($year >= 10000)) {
return PHPExcel_Calculation_Functions::NaN();
}
// Execute function
$excelDateValue = PHPExcel_Shared_Date::FormattedPHPToExcel($year, $month, $day);
switch (PHPExcel_Calculation_Functions::getReturnDateType()) {
case PHPExcel_Calculation_Functions::RETURNDATE_EXCEL :
return (float) $excelDateValue;
break;
case PHPExcel_Calculation_Functions::RETURNDATE_PHP_NUMERIC :
return (integer) PHPExcel_Shared_Date::ExcelToPHP($excelDateValue);
break;
case PHPExcel_Calculation_Functions::RETURNDATE_PHP_OBJECT :
return PHPExcel_Shared_Date::ExcelToPHPObject($excelDateValue);
break;
}
} // function DATE()
/**
* TIME
*
* @param long $hour
* @param long $minute
* @param long $second
* @return mixed Excel date/time serial value, PHP date/time serial value or PHP date/time object,
* depending on the value of the ReturnDateType flag
*/
public static function TIME($hour = 0, $minute = 0, $second = 0) {
$hour = PHPExcel_Calculation_Functions::flattenSingleValue($hour);
$minute = PHPExcel_Calculation_Functions::flattenSingleValue($minute);
$second = PHPExcel_Calculation_Functions::flattenSingleValue($second);
if ($hour == '') { $hour = 0; }
if ($minute == '') { $minute = 0; }
if ($second == '') { $second = 0; }
if ((!is_numeric($hour)) || (!is_numeric($minute)) || (!is_numeric($second))) {
return PHPExcel_Calculation_Functions::VALUE();
}
$hour = (integer) $hour;
$minute = (integer) $minute;
$second = (integer) $second;
if ($second < 0) {
$minute += floor($second / 60);
$second = 60 - abs($second % 60);
if ($second == 60) { $second = 0; }
} elseif ($second >= 60) {
$minute += floor($second / 60);
$second = $second % 60;
}
if ($minute < 0) {
$hour += floor($minute / 60);
$minute = 60 - abs($minute % 60);
if ($minute == 60) { $minute = 0; }
} elseif ($minute >= 60) {
$hour += floor($minute / 60);
$minute = $minute % 60;
}
if ($hour > 23) {
$hour = $hour % 24;
} elseif ($hour < 0) {
return PHPExcel_Calculation_Functions::NaN();
}
// Execute function
switch (PHPExcel_Calculation_Functions::getReturnDateType()) {
case PHPExcel_Calculation_Functions::RETURNDATE_EXCEL :
$date = 0;
$calendar = PHPExcel_Shared_Date::getExcelCalendar();
if ($calendar != PHPExcel_Shared_Date::CALENDAR_WINDOWS_1900) {
$date = 1;
}
return (float) PHPExcel_Shared_Date::FormattedPHPToExcel($calendar, 1, $date, $hour, $minute, $second);
break;
case PHPExcel_Calculation_Functions::RETURNDATE_PHP_NUMERIC :
return (integer) PHPExcel_Shared_Date::ExcelToPHP(PHPExcel_Shared_Date::FormattedPHPToExcel(1970, 1, 1, $hour-1, $minute, $second)); // -2147468400; // -2147472000 + 3600
break;
case PHPExcel_Calculation_Functions::RETURNDATE_PHP_OBJECT :
$dayAdjust = 0;
if ($hour < 0) {
$dayAdjust = floor($hour / 24);
$hour = 24 - abs($hour % 24);
if ($hour == 24) { $hour = 0; }
} elseif ($hour >= 24) {
$dayAdjust = floor($hour / 24);
$hour = $hour % 24;
}
$phpDateObject = new DateTime('1900-01-01 '.$hour.':'.$minute.':'.$second);
if ($dayAdjust != 0) {
$phpDateObject->modify($dayAdjust.' days');
}
return $phpDateObject;
break;
}
} // function TIME()
/**
* DATEVALUE
*
* @param string $dateValue
* @return mixed Excel date/time serial value, PHP date/time serial value or PHP date/time object,
* depending on the value of the ReturnDateType flag
*/
public static function DATEVALUE($dateValue = 1) {
$dateValue = trim(PHPExcel_Calculation_Functions::flattenSingleValue($dateValue),'"');
// Strip any ordinals because they're allowed in Excel (English only)
$dateValue = preg_replace('/(\d)(st|nd|rd|th)([ -\/])/Ui','$1$3',$dateValue);
// Convert separators (/ . or space) to hyphens (should also handle dot used for ordinals in some countries, e.g. Denmark, Germany)
$dateValue = str_replace(array('/','.','-',' '),array(' ',' ',' ',' '),$dateValue);
$yearFound = false;
$t1 = explode(' ',$dateValue);
foreach($t1 as &$t) {
if ((is_numeric($t)) && ($t > 31)) {
if ($yearFound) {
return PHPExcel_Calculation_Functions::VALUE();
} else {
if ($t < 100) { $t += 1900; }
$yearFound = true;
}
}
}
if ((count($t1) == 1) && (strpos($t,':') != false)) {
// We've been fed a time value without any date
return 0.0;
} elseif (count($t1) == 2) {
// We only have two parts of the date: either day/month or month/year
if ($yearFound) {
array_unshift($t1,1);
} else {
array_push($t1,date('Y'));
}
}
unset($t);
$dateValue = implode(' ',$t1);
$PHPDateArray = date_parse($dateValue);
if (($PHPDateArray === False) || ($PHPDateArray['error_count'] > 0)) {
$testVal1 = strtok($dateValue,'- ');
if ($testVal1 !== False) {
$testVal2 = strtok('- ');
if ($testVal2 !== False) {
$testVal3 = strtok('- ');
if ($testVal3 === False) {
$testVal3 = strftime('%Y');
}
} else {
return PHPExcel_Calculation_Functions::VALUE();
}
} else {
return PHPExcel_Calculation_Functions::VALUE();
}
$PHPDateArray = date_parse($testVal1.'-'.$testVal2.'-'.$testVal3);
if (($PHPDateArray === False) || ($PHPDateArray['error_count'] > 0)) {
$PHPDateArray = date_parse($testVal2.'-'.$testVal1.'-'.$testVal3);
if (($PHPDateArray === False) || ($PHPDateArray['error_count'] > 0)) {
return PHPExcel_Calculation_Functions::VALUE();
}
}
}
if (($PHPDateArray !== False) && ($PHPDateArray['error_count'] == 0)) {
// Execute function
if ($PHPDateArray['year'] == '') { $PHPDateArray['year'] = strftime('%Y'); }
if ($PHPDateArray['month'] == '') { $PHPDateArray['month'] = strftime('%m'); }
if ($PHPDateArray['day'] == '') { $PHPDateArray['day'] = strftime('%d'); }
$excelDateValue = floor(PHPExcel_Shared_Date::FormattedPHPToExcel($PHPDateArray['year'],$PHPDateArray['month'],$PHPDateArray['day'],$PHPDateArray['hour'],$PHPDateArray['minute'],$PHPDateArray['second']));
switch (PHPExcel_Calculation_Functions::getReturnDateType()) {
case PHPExcel_Calculation_Functions::RETURNDATE_EXCEL :
return (float) $excelDateValue;
break;
case PHPExcel_Calculation_Functions::RETURNDATE_PHP_NUMERIC :
return (integer) PHPExcel_Shared_Date::ExcelToPHP($excelDateValue);
break;
case PHPExcel_Calculation_Functions::RETURNDATE_PHP_OBJECT :
return new DateTime($PHPDateArray['year'].'-'.$PHPDateArray['month'].'-'.$PHPDateArray['day'].' 00:00:00');
break;
}
}
return PHPExcel_Calculation_Functions::VALUE();
} // function DATEVALUE()
/**
* TIMEVALUE
*
* @param string $timeValue
* @return mixed Excel date/time serial value, PHP date/time serial value or PHP date/time object,
* depending on the value of the ReturnDateType flag
*/
public static function TIMEVALUE($timeValue) {
$timeValue = trim(PHPExcel_Calculation_Functions::flattenSingleValue($timeValue),'"');
$timeValue = str_replace(array('/','.'),array('-','-'),$timeValue);
$PHPDateArray = date_parse($timeValue);
if (($PHPDateArray !== False) && ($PHPDateArray['error_count'] == 0)) {
if (PHPExcel_Calculation_Functions::getCompatibilityMode() == PHPExcel_Calculation_Functions::COMPATIBILITY_OPENOFFICE) {
$excelDateValue = PHPExcel_Shared_Date::FormattedPHPToExcel($PHPDateArray['year'],$PHPDateArray['month'],$PHPDateArray['day'],$PHPDateArray['hour'],$PHPDateArray['minute'],$PHPDateArray['second']);
} else {
$excelDateValue = PHPExcel_Shared_Date::FormattedPHPToExcel(1900,1,1,$PHPDateArray['hour'],$PHPDateArray['minute'],$PHPDateArray['second']) - 1;
}
switch (PHPExcel_Calculation_Functions::getReturnDateType()) {
case PHPExcel_Calculation_Functions::RETURNDATE_EXCEL :
return (float) $excelDateValue;
break;
case PHPExcel_Calculation_Functions::RETURNDATE_PHP_NUMERIC :
return (integer) $phpDateValue = PHPExcel_Shared_Date::ExcelToPHP($excelDateValue+25569) - 3600;;
break;
case PHPExcel_Calculation_Functions::RETURNDATE_PHP_OBJECT :
return new DateTime('1900-01-01 '.$PHPDateArray['hour'].':'.$PHPDateArray['minute'].':'.$PHPDateArray['second']);
break;
}
}
return PHPExcel_Calculation_Functions::VALUE();
} // function TIMEVALUE()
/**
* DATEDIF
*
* @param long $startDate Excel date serial value or a standard date string
* @param long $endDate Excel date serial value or a standard date string
* @param string $unit
* @return long Interval between the dates
*/
public static function DATEDIF($startDate = 0, $endDate = 0, $unit = 'D') {
$startDate = PHPExcel_Calculation_Functions::flattenSingleValue($startDate);
$endDate = PHPExcel_Calculation_Functions::flattenSingleValue($endDate);
$unit = strtoupper(PHPExcel_Calculation_Functions::flattenSingleValue($unit));
if (is_string($startDate = self::_getDateValue($startDate))) {
return PHPExcel_Calculation_Functions::VALUE();
}
if (is_string($endDate = self::_getDateValue($endDate))) {
return PHPExcel_Calculation_Functions::VALUE();
}
// Validate parameters
if ($startDate >= $endDate) {
return PHPExcel_Calculation_Functions::NaN();
}
// Execute function
$difference = $endDate - $startDate;
$PHPStartDateObject = PHPExcel_Shared_Date::ExcelToPHPObject($startDate);
$startDays = $PHPStartDateObject->format('j');
$startMonths = $PHPStartDateObject->format('n');
$startYears = $PHPStartDateObject->format('Y');
$PHPEndDateObject = PHPExcel_Shared_Date::ExcelToPHPObject($endDate);
$endDays = $PHPEndDateObject->format('j');
$endMonths = $PHPEndDateObject->format('n');
$endYears = $PHPEndDateObject->format('Y');
$retVal = PHPExcel_Calculation_Functions::NaN();
switch ($unit) {
case 'D':
$retVal = intval($difference);
break;
case 'M':
$retVal = intval($endMonths - $startMonths) + (intval($endYears - $startYears) * 12);
// We're only interested in full months
if ($endDays < $startDays) {
--$retVal;
}
break;
case 'Y':
$retVal = intval($endYears - $startYears);
// We're only interested in full months
if ($endMonths < $startMonths) {
--$retVal;
} elseif (($endMonths == $startMonths) && ($endDays < $startDays)) {
--$retVal;
}
break;
case 'MD':
if ($endDays < $startDays) {
$retVal = $endDays;
$PHPEndDateObject->modify('-'.$endDays.' days');
$adjustDays = $PHPEndDateObject->format('j');
if ($adjustDays > $startDays) {
$retVal += ($adjustDays - $startDays);
}
} else {
$retVal = $endDays - $startDays;
}
break;
case 'YM':
$retVal = intval($endMonths - $startMonths);
if ($retVal < 0) $retVal = 12 + $retVal;
// We're only interested in full months
if ($endDays < $startDays) {
--$retVal;
}
break;
case 'YD':
$retVal = intval($difference);
if ($endYears > $startYears) {
while ($endYears > $startYears) {
$PHPEndDateObject->modify('-1 year');
$endYears = $PHPEndDateObject->format('Y');
}
$retVal = $PHPEndDateObject->format('z') - $PHPStartDateObject->format('z');
if ($retVal < 0) { $retVal += 365; }
}
break;
}
return $retVal;
} // function DATEDIF()
/**
* DAYS360
*
* @param long $startDate Excel date serial value or a standard date string
* @param long $endDate Excel date serial value or a standard date string
* @param boolean $method US or European Method
* @return long PHP date/time serial
*/
public static function DAYS360($startDate = 0, $endDate = 0, $method = false) {
$startDate = PHPExcel_Calculation_Functions::flattenSingleValue($startDate);
$endDate = PHPExcel_Calculation_Functions::flattenSingleValue($endDate);
if (is_string($startDate = self::_getDateValue($startDate))) {
return PHPExcel_Calculation_Functions::VALUE();
}
if (is_string($endDate = self::_getDateValue($endDate))) {
return PHPExcel_Calculation_Functions::VALUE();
}
// Execute function
$PHPStartDateObject = PHPExcel_Shared_Date::ExcelToPHPObject($startDate);
$startDay = $PHPStartDateObject->format('j');
$startMonth = $PHPStartDateObject->format('n');
$startYear = $PHPStartDateObject->format('Y');
$PHPEndDateObject = PHPExcel_Shared_Date::ExcelToPHPObject($endDate);
$endDay = $PHPEndDateObject->format('j');
$endMonth = $PHPEndDateObject->format('n');
$endYear = $PHPEndDateObject->format('Y');
return self::_dateDiff360($startDay, $startMonth, $startYear, $endDay, $endMonth, $endYear, !$method);
} // function DAYS360()
/**
* YEARFRAC
*
* Calculates the fraction of the year represented by the number of whole days between two dates (the start_date and the
* end_date). Use the YEARFRAC worksheet function to identify the proportion of a whole year's benefits or obligations
* to assign to a specific term.
*
* @param mixed $startDate Excel date serial value (float), PHP date timestamp (integer) or date object, or a standard date string
* @param mixed $endDate Excel date serial value (float), PHP date timestamp (integer) or date object, or a standard date string
* @param integer $method Method used for the calculation
* 0 or omitted US (NASD) 30/360
* 1 Actual/actual
* 2 Actual/360
* 3 Actual/365
* 4 European 30/360
* @return float fraction of the year
*/
public static function YEARFRAC($startDate = 0, $endDate = 0, $method = 0) {
$startDate = PHPExcel_Calculation_Functions::flattenSingleValue($startDate);
$endDate = PHPExcel_Calculation_Functions::flattenSingleValue($endDate);
$method = PHPExcel_Calculation_Functions::flattenSingleValue($method);
if (is_string($startDate = self::_getDateValue($startDate))) {
return PHPExcel_Calculation_Functions::VALUE();
}
if (is_string($endDate = self::_getDateValue($endDate))) {
return PHPExcel_Calculation_Functions::VALUE();
}
if (((is_numeric($method)) && (!is_string($method))) || ($method == '')) {
switch($method) {
case 0 :
return self::DAYS360($startDate,$endDate) / 360;
break;
case 1 :
$days = self::DATEDIF($startDate,$endDate);
$startYear = self::YEAR($startDate);
$endYear = self::YEAR($endDate);
$years = $endYear - $startYear + 1;
$leapDays = 0;
if ($years == 1) {
if (self::_isLeapYear($endYear)) {
$startMonth = self::MONTHOFYEAR($startDate);
$endMonth = self::MONTHOFYEAR($endDate);
$endDay = self::DAYOFMONTH($endDate);
if (($startMonth < 3) ||
(($endMonth * 100 + $endDay) >= (2 * 100 + 29))) {
$leapDays += 1;
}
}
} else {
for($year = $startYear; $year <= $endYear; ++$year) {
if ($year == $startYear) {
$startMonth = self::MONTHOFYEAR($startDate);
$startDay = self::DAYOFMONTH($startDate);
if ($startMonth < 3) {
$leapDays += (self::_isLeapYear($year)) ? 1 : 0;
}
} elseif($year == $endYear) {
$endMonth = self::MONTHOFYEAR($endDate);
$endDay = self::DAYOFMONTH($endDate);
if (($endMonth * 100 + $endDay) >= (2 * 100 + 29)) {
$leapDays += (self::_isLeapYear($year)) ? 1 : 0;
}
} else {
$leapDays += (self::_isLeapYear($year)) ? 1 : 0;
}
}
if ($years == 2) {
if (($leapDays == 0) && (self::_isLeapYear($startYear)) && ($days > 365)) {
$leapDays = 1;
} elseif ($days < 366) {
$years = 1;
}
}
$leapDays /= $years;
}
return $days / (365 + $leapDays);
break;
case 2 :
return self::DATEDIF($startDate,$endDate) / 360;
break;
case 3 :
return self::DATEDIF($startDate,$endDate) / 365;
break;
case 4 :
return self::DAYS360($startDate,$endDate,True) / 360;
break;
}
}
return PHPExcel_Calculation_Functions::VALUE();
} // function YEARFRAC()
/**
* NETWORKDAYS
*
* @param mixed Start date
* @param mixed End date
* @param array of mixed Optional Date Series
* @return long Interval between the dates
*/
public static function NETWORKDAYS($startDate,$endDate) {
// Retrieve the mandatory start and end date that are referenced in the function definition
$startDate = PHPExcel_Calculation_Functions::flattenSingleValue($startDate);
$endDate = PHPExcel_Calculation_Functions::flattenSingleValue($endDate);
// Flush the mandatory start and end date that are referenced in the function definition, and get the optional days
$dateArgs = PHPExcel_Calculation_Functions::flattenArray(func_get_args());
array_shift($dateArgs);
array_shift($dateArgs);
// Validate the start and end dates
if (is_string($startDate = $sDate = self::_getDateValue($startDate))) {
return PHPExcel_Calculation_Functions::VALUE();
}
$startDate = (float) floor($startDate);
if (is_string($endDate = $eDate = self::_getDateValue($endDate))) {
return PHPExcel_Calculation_Functions::VALUE();
}
$endDate = (float) floor($endDate);
if ($sDate > $eDate) {
$startDate = $eDate;
$endDate = $sDate;
}
// Execute function
$startDoW = 6 - self::DAYOFWEEK($startDate,2);
if ($startDoW < 0) { $startDoW = 0; }
$endDoW = self::DAYOFWEEK($endDate,2);
if ($endDoW >= 6) { $endDoW = 0; }
$wholeWeekDays = floor(($endDate - $startDate) / 7) * 5;
$partWeekDays = $endDoW + $startDoW;
if ($partWeekDays > 5) {
$partWeekDays -= 5;
}
// Test any extra holiday parameters
$holidayCountedArray = array();
foreach ($dateArgs as $holidayDate) {
if (is_string($holidayDate = self::_getDateValue($holidayDate))) {
return PHPExcel_Calculation_Functions::VALUE();
}
if (($holidayDate >= $startDate) && ($holidayDate <= $endDate)) {
if ((self::DAYOFWEEK($holidayDate,2) < 6) && (!in_array($holidayDate,$holidayCountedArray))) {
--$partWeekDays;
$holidayCountedArray[] = $holidayDate;
}
}
}
if ($sDate > $eDate) {
return 0 - ($wholeWeekDays + $partWeekDays);
}
return $wholeWeekDays + $partWeekDays;
} // function NETWORKDAYS()
/**
* WORKDAY
*
* @param mixed Start date
* @param mixed number of days for adjustment
* @param array of mixed Optional Date Series
* @return long Interval between the dates
*/
public static function WORKDAY($startDate,$endDays) {
// Retrieve the mandatory start date and days that are referenced in the function definition
$startDate = PHPExcel_Calculation_Functions::flattenSingleValue($startDate);
$endDays = (int) PHPExcel_Calculation_Functions::flattenSingleValue($endDays);
// Flush the mandatory start date and days that are referenced in the function definition, and get the optional days
$dateArgs = PHPExcel_Calculation_Functions::flattenArray(func_get_args());
array_shift($dateArgs);
array_shift($dateArgs);
if ((is_string($startDate = self::_getDateValue($startDate))) || (!is_numeric($endDays))) {
return PHPExcel_Calculation_Functions::VALUE();
}
$startDate = (float) floor($startDate);
// If endDays is 0, we always return startDate
if ($endDays == 0) { return $startDate; }
$decrementing = ($endDays < 0) ? True : False;
// Adjust the start date if it falls over a weekend
$startDoW = self::DAYOFWEEK($startDate,3);
if (self::DAYOFWEEK($startDate,3) >= 5) {
$startDate += ($decrementing) ? -$startDoW + 4: 7 - $startDoW;
($decrementing) ? $endDays++ : $endDays--;
}
// Add endDays
$endDate = (float) $startDate + (intval($endDays / 5) * 7) + ($endDays % 5);
// Adjust the calculated end date if it falls over a weekend
$endDoW = self::DAYOFWEEK($endDate,3);
if ($endDoW >= 5) {
$endDate += ($decrementing) ? -$endDoW + 4: 7 - $endDoW;
}
// Test any extra holiday parameters
if (count($dateArgs) > 0) {
$holidayCountedArray = $holidayDates = array();
foreach ($dateArgs as $holidayDate) {
if ((!is_null($holidayDate)) && (trim($holidayDate) > '')) {
if (is_string($holidayDate = self::_getDateValue($holidayDate))) {
return PHPExcel_Calculation_Functions::VALUE();
}
if (self::DAYOFWEEK($holidayDate,3) < 5) {
$holidayDates[] = $holidayDate;
}
}
}
if ($decrementing) {
rsort($holidayDates, SORT_NUMERIC);
} else {
sort($holidayDates, SORT_NUMERIC);
}
foreach ($holidayDates as $holidayDate) {
if ($decrementing) {
if (($holidayDate <= $startDate) && ($holidayDate >= $endDate)) {
if (!in_array($holidayDate,$holidayCountedArray)) {
--$endDate;
$holidayCountedArray[] = $holidayDate;
}
}
} else {
if (($holidayDate >= $startDate) && ($holidayDate <= $endDate)) {
if (!in_array($holidayDate,$holidayCountedArray)) {
++$endDate;
$holidayCountedArray[] = $holidayDate;
}
}
}
// Adjust the calculated end date if it falls over a weekend
$endDoW = self::DAYOFWEEK($endDate,3);
if ($endDoW >= 5) {
$endDate += ($decrementing) ? -$endDoW + 4: 7 - $endDoW;
}
}
}
switch (PHPExcel_Calculation_Functions::getReturnDateType()) {
case PHPExcel_Calculation_Functions::RETURNDATE_EXCEL :
return (float) $endDate;
break;
case PHPExcel_Calculation_Functions::RETURNDATE_PHP_NUMERIC :
return (integer) PHPExcel_Shared_Date::ExcelToPHP($endDate);
break;
case PHPExcel_Calculation_Functions::RETURNDATE_PHP_OBJECT :
return PHPExcel_Shared_Date::ExcelToPHPObject($endDate);
break;
}
} // function WORKDAY()
/**
* DAYOFMONTH
*
* @param long $dateValue Excel date serial value or a standard date string
* @return int Day
*/
public static function DAYOFMONTH($dateValue = 1) {
$dateValue = PHPExcel_Calculation_Functions::flattenSingleValue($dateValue);
if (is_string($dateValue = self::_getDateValue($dateValue))) {
return PHPExcel_Calculation_Functions::VALUE();
} elseif ($dateValue == 0.0) {
return 0;
} elseif ($dateValue < 0.0) {
return PHPExcel_Calculation_Functions::NaN();
}
// Execute function
$PHPDateObject = PHPExcel_Shared_Date::ExcelToPHPObject($dateValue);
return (int) $PHPDateObject->format('j');
} // function DAYOFMONTH()
/**
* DAYOFWEEK
*
* @param long $dateValue Excel date serial value or a standard date string
* @return int Day
*/
public static function DAYOFWEEK($dateValue = 1, $style = 1) {
$dateValue = PHPExcel_Calculation_Functions::flattenSingleValue($dateValue);
$style = floor(PHPExcel_Calculation_Functions::flattenSingleValue($style));
if (is_string($dateValue = self::_getDateValue($dateValue))) {
return PHPExcel_Calculation_Functions::VALUE();
} elseif ($dateValue < 0.0) {
return PHPExcel_Calculation_Functions::NaN();
}
// Execute function
$PHPDateObject = PHPExcel_Shared_Date::ExcelToPHPObject($dateValue);
$DoW = $PHPDateObject->format('w');
$firstDay = 1;
switch ($style) {
case 1: ++$DoW;
break;
case 2: if ($DoW == 0) { $DoW = 7; }
break;
case 3: if ($DoW == 0) { $DoW = 7; }
$firstDay = 0;
--$DoW;
break;
default:
}
if (PHPExcel_Calculation_Functions::getCompatibilityMode() == PHPExcel_Calculation_Functions::COMPATIBILITY_EXCEL) {
// Test for Excel's 1900 leap year, and introduce the error as required
if (($PHPDateObject->format('Y') == 1900) && ($PHPDateObject->format('n') <= 2)) {
--$DoW;
if ($DoW < $firstDay) {
$DoW += 7;
}
}
}
return (int) $DoW;
} // function DAYOFWEEK()
/**
* WEEKOFYEAR
*
* @param long $dateValue Excel date serial value or a standard date string
* @param boolean $method Week begins on Sunday or Monday
* @return int Week Number
*/
public static function WEEKOFYEAR($dateValue = 1, $method = 1) {
$dateValue = PHPExcel_Calculation_Functions::flattenSingleValue($dateValue);
$method = floor(PHPExcel_Calculation_Functions::flattenSingleValue($method));
if (!is_numeric($method)) {
return PHPExcel_Calculation_Functions::VALUE();
} elseif (($method < 1) || ($method > 2)) {
return PHPExcel_Calculation_Functions::NaN();
}
if (is_string($dateValue = self::_getDateValue($dateValue))) {
return PHPExcel_Calculation_Functions::VALUE();
} elseif ($dateValue < 0.0) {
return PHPExcel_Calculation_Functions::NaN();
}
// Execute function
$PHPDateObject = PHPExcel_Shared_Date::ExcelToPHPObject($dateValue);
$dayOfYear = $PHPDateObject->format('z');
$dow = $PHPDateObject->format('w');
$PHPDateObject->modify('-'.$dayOfYear.' days');
$dow = $PHPDateObject->format('w');
$daysInFirstWeek = 7 - (($dow + (2 - $method)) % 7);
$dayOfYear -= $daysInFirstWeek;
$weekOfYear = ceil($dayOfYear / 7) + 1;
return (int) $weekOfYear;
} // function WEEKOFYEAR()
/**
* MONTHOFYEAR
*
* @param long $dateValue Excel date serial value or a standard date string
* @return int Month
*/
public static function MONTHOFYEAR($dateValue = 1) {
$dateValue = PHPExcel_Calculation_Functions::flattenSingleValue($dateValue);
if (is_string($dateValue = self::_getDateValue($dateValue))) {
return PHPExcel_Calculation_Functions::VALUE();
} elseif ($dateValue < 0.0) {
return PHPExcel_Calculation_Functions::NaN();
}
// Execute function
$PHPDateObject = PHPExcel_Shared_Date::ExcelToPHPObject($dateValue);
return (int) $PHPDateObject->format('n');
} // function MONTHOFYEAR()
/**
* YEAR
*
* @param long $dateValue Excel date serial value or a standard date string
* @return int Year
*/
public static function YEAR($dateValue = 1) {
$dateValue = PHPExcel_Calculation_Functions::flattenSingleValue($dateValue);
if (is_string($dateValue = self::_getDateValue($dateValue))) {
return PHPExcel_Calculation_Functions::VALUE();
} elseif ($dateValue < 0.0) {
return PHPExcel_Calculation_Functions::NaN();
}
// Execute function
$PHPDateObject = PHPExcel_Shared_Date::ExcelToPHPObject($dateValue);
return (int) $PHPDateObject->format('Y');
} // function YEAR()
/**
* HOUROFDAY
*
* @param mixed $timeValue Excel time serial value or a standard time string
* @return int Hour
*/
public static function HOUROFDAY($timeValue = 0) {
$timeValue = PHPExcel_Calculation_Functions::flattenSingleValue($timeValue);
if (!is_numeric($timeValue)) {
if (PHPExcel_Calculation_Functions::getCompatibilityMode() == PHPExcel_Calculation_Functions::COMPATIBILITY_GNUMERIC) {
$testVal = strtok($timeValue,'/-: ');
if (strlen($testVal) < strlen($timeValue)) {
return PHPExcel_Calculation_Functions::VALUE();
}
}
$timeValue = self::_getTimeValue($timeValue);
if (is_string($timeValue)) {
return PHPExcel_Calculation_Functions::VALUE();
}
}
// Execute function
if ($timeValue >= 1) {
$timeValue = fmod($timeValue,1);
} elseif ($timeValue < 0.0) {
return PHPExcel_Calculation_Functions::NaN();
}
$timeValue = PHPExcel_Shared_Date::ExcelToPHP($timeValue);
return (int) gmdate('G',$timeValue);
} // function HOUROFDAY()
/**
* MINUTEOFHOUR
*
* @param long $timeValue Excel time serial value or a standard time string
* @return int Minute
*/
public static function MINUTEOFHOUR($timeValue = 0) {
$timeValue = $timeTester = PHPExcel_Calculation_Functions::flattenSingleValue($timeValue);
if (!is_numeric($timeValue)) {
if (PHPExcel_Calculation_Functions::getCompatibilityMode() == PHPExcel_Calculation_Functions::COMPATIBILITY_GNUMERIC) {
$testVal = strtok($timeValue,'/-: ');
if (strlen($testVal) < strlen($timeValue)) {
return PHPExcel_Calculation_Functions::VALUE();
}
}
$timeValue = self::_getTimeValue($timeValue);
if (is_string($timeValue)) {
return PHPExcel_Calculation_Functions::VALUE();
}
}
// Execute function
if ($timeValue >= 1) {
$timeValue = fmod($timeValue,1);
} elseif ($timeValue < 0.0) {
return PHPExcel_Calculation_Functions::NaN();
}
$timeValue = PHPExcel_Shared_Date::ExcelToPHP($timeValue);
return (int) gmdate('i',$timeValue);
} // function MINUTEOFHOUR()
/**
* SECONDOFMINUTE
*
* @param long $timeValue Excel time serial value or a standard time string
* @return int Second
*/
public static function SECONDOFMINUTE($timeValue = 0) {
$timeValue = PHPExcel_Calculation_Functions::flattenSingleValue($timeValue);
if (!is_numeric($timeValue)) {
if (PHPExcel_Calculation_Functions::getCompatibilityMode() == PHPExcel_Calculation_Functions::COMPATIBILITY_GNUMERIC) {
$testVal = strtok($timeValue,'/-: ');
if (strlen($testVal) < strlen($timeValue)) {
return PHPExcel_Calculation_Functions::VALUE();
}
}
$timeValue = self::_getTimeValue($timeValue);
if (is_string($timeValue)) {
return PHPExcel_Calculation_Functions::VALUE();
}
}
// Execute function
if ($timeValue >= 1) {
$timeValue = fmod($timeValue,1);
} elseif ($timeValue < 0.0) {
return PHPExcel_Calculation_Functions::NaN();
}
$timeValue = PHPExcel_Shared_Date::ExcelToPHP($timeValue);
return (int) gmdate('s',$timeValue);
} // function SECONDOFMINUTE()
/**
* EDATE
*
* Returns the serial number that represents the date that is the indicated number of months before or after a specified date
* (the start_date). Use EDATE to calculate maturity dates or due dates that fall on the same day of the month as the date of issue.
*
* @param long $dateValue Excel date serial value or a standard date string
* @param int $adjustmentMonths Number of months to adjust by
* @return long Excel date serial value
*/
public static function EDATE($dateValue = 1, $adjustmentMonths = 0) {
$dateValue = PHPExcel_Calculation_Functions::flattenSingleValue($dateValue);
$adjustmentMonths = floor(PHPExcel_Calculation_Functions::flattenSingleValue($adjustmentMonths));
if (!is_numeric($adjustmentMonths)) {
return PHPExcel_Calculation_Functions::VALUE();
}
if (is_string($dateValue = self::_getDateValue($dateValue))) {
return PHPExcel_Calculation_Functions::VALUE();
}
// Execute function
$PHPDateObject = self::_adjustDateByMonths($dateValue,$adjustmentMonths);
switch (PHPExcel_Calculation_Functions::getReturnDateType()) {
case PHPExcel_Calculation_Functions::RETURNDATE_EXCEL :
return (float) PHPExcel_Shared_Date::PHPToExcel($PHPDateObject);
break;
case PHPExcel_Calculation_Functions::RETURNDATE_PHP_NUMERIC :
return (integer) PHPExcel_Shared_Date::ExcelToPHP(PHPExcel_Shared_Date::PHPToExcel($PHPDateObject));
break;
case PHPExcel_Calculation_Functions::RETURNDATE_PHP_OBJECT :
return $PHPDateObject;
break;
}
} // function EDATE()
/**
* EOMONTH
*
* Returns the serial number for the last day of the month that is the indicated number of months before or after start_date.
* Use EOMONTH to calculate maturity dates or due dates that fall on the last day of the month.
*
* @param long $dateValue Excel date serial value or a standard date string
* @param int $adjustmentMonths Number of months to adjust by
* @return long Excel date serial value
*/
public static function EOMONTH($dateValue = 1, $adjustmentMonths = 0) {
$dateValue = PHPExcel_Calculation_Functions::flattenSingleValue($dateValue);
$adjustmentMonths = floor(PHPExcel_Calculation_Functions::flattenSingleValue($adjustmentMonths));
if (!is_numeric($adjustmentMonths)) {
return PHPExcel_Calculation_Functions::VALUE();
}
if (is_string($dateValue = self::_getDateValue($dateValue))) {
return PHPExcel_Calculation_Functions::VALUE();
}
// Execute function
$PHPDateObject = self::_adjustDateByMonths($dateValue,$adjustmentMonths+1);
$adjustDays = (int) $PHPDateObject->format('d');
$adjustDaysString = '-'.$adjustDays.' days';
$PHPDateObject->modify($adjustDaysString);
switch (PHPExcel_Calculation_Functions::getReturnDateType()) {
case PHPExcel_Calculation_Functions::RETURNDATE_EXCEL :
return (float) PHPExcel_Shared_Date::PHPToExcel($PHPDateObject);
break;
case PHPExcel_Calculation_Functions::RETURNDATE_PHP_NUMERIC :
return (integer) PHPExcel_Shared_Date::ExcelToPHP(PHPExcel_Shared_Date::PHPToExcel($PHPDateObject));
break;
case PHPExcel_Calculation_Functions::RETURNDATE_PHP_OBJECT :
return $PHPDateObject;
break;
}
} // function EOMONTH()
} // class PHPExcel_Calculation_DateTime

Source for file DateTime.php