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<?php
2 
/**
3 
 * PHPExcel
4 
 *
5 
 * Copyright (c) 2006 - 2013 PHPExcel
6 
 *
7 
 * This library is free software; you can redistribute it and/or
8 
 * modify it under the terms of the GNU Lesser General Public
9 
 * License as published by the Free Software Foundation; either
10 
 * version 2.1 of the License, or (at your option) any later version.
11 
 *
12 
 * This library is distributed in the hope that it will be useful,
13 
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 
 * Lesser General Public License for more details.
16 
 *
17 
 * You should have received a copy of the GNU Lesser General Public
18 
 * License along with this library; if not, write to the Free Software
19 
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 
 *
21 
 * @category	PHPExcel
22 
 * @package		PHPExcel_Calculation
23 
 * @copyright	Copyright (c) 2006 - 2013 PHPExcel (http://www.codeplex.com/PHPExcel)
24 
 * @license		http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
25 
 * @version		##VERSION##, ##DATE##
26 
 */
27 
 
28 
 
29 
/** PHPExcel root directory */
30 
if (!defined('PHPEXCEL_ROOT')) {
31 
	/**
32 
	 * @ignore
33 
	 */
34 
	define('PHPEXCEL_ROOT', dirname(__FILE__) . '/../../');
35 
	require(PHPEXCEL_ROOT . 'PHPExcel/Autoloader.php');
36 
}
37 
 
38 
 
39 
/**
40 
 * PHPExcel_Calculation_DateTime
41 
 *
42 
 * @category	PHPExcel
43 
 * @package		PHPExcel_Calculation
44 
 * @copyright	Copyright (c) 2006 - 2013 PHPExcel (http://www.codeplex.com/PHPExcel)
45 
 */
46 
class PHPExcel_Calculation_DateTime {
47 
 
48 
	/**
49 
	 * Identify if a year is a leap year or not
50 
	 *
51 
	 * @param	integer	$year	The year to test
52 
	 * @return	boolean			TRUE if the year is a leap year, otherwise FALSE
53 
	 */
54 
	public static function _isLeapYear($year) {
55 
		return ((($year % 4) == 0) && (($year % 100) != 0) || (($year % 400) == 0));
56 
	}	//	function _isLeapYear()
57 
 
58 
 
59 
	/**
60 
	 * Return the number of days between two dates based on a 360 day calendar
61 
	 *
62 
	 * @param	integer	$startDay		Day of month of the start date
63 
	 * @param	integer	$startMonth		Month of the start date
64 
	 * @param	integer	$startYear		Year of the start date
65 
	 * @param	integer	$endDay			Day of month of the start date
66 
	 * @param	integer	$endMonth		Month of the start date
67 
	 * @param	integer	$endYear		Year of the start date
68 
	 * @param	boolean $methodUS		Whether to use the US method or the European method of calculation
69 
	 * @return	integer	Number of days between the start date and the end date
70 
	 */
71 
	private static function _dateDiff360($startDay, $startMonth, $startYear, $endDay, $endMonth, $endYear, $methodUS) {
72 
		if ($startDay == 31) {
73 
			--$startDay;
74 
		} elseif ($methodUS && ($startMonth == 2 && ($startDay == 29 || ($startDay == 28 && !self::_isLeapYear($startYear))))) {
75 
			$startDay = 30;
76 
		}
77 
		if ($endDay == 31) {
78 
			if ($methodUS && $startDay != 30) {
79 
				$endDay = 1;
80 
				if ($endMonth == 12) {
81 
					++$endYear;
82 
					$endMonth = 1;
83 
				} else {
84 
					++$endMonth;
85 
				}
86 
			} else {
87 
				$endDay = 30;
88 
			}
89 
		}
90 
 
91 
		return $endDay + $endMonth * 30 + $endYear * 360 - $startDay - $startMonth * 30 - $startYear * 360;
92 
	}	//	function _dateDiff360()
93 
 
94 
 
95 
	/**
96 
	 * _getDateValue
97 
	 *
98 
	 * @param	string	$dateValue
99 
	 * @return	mixed	Excel date/time serial value, or string if error
100 
	 */
101 
	public static function _getDateValue($dateValue) {
102 
		if (!is_numeric($dateValue)) {
103 
			if ((is_string($dateValue)) &&
104 
				(PHPExcel_Calculation_Functions::getCompatibilityMode() == PHPExcel_Calculation_Functions::COMPATIBILITY_GNUMERIC)) {
105 
				return PHPExcel_Calculation_Functions::VALUE();
106 
			}
107 
			if ((is_object($dateValue)) && ($dateValue instanceof DateTime)) {
108 
				$dateValue = PHPExcel_Shared_Date::PHPToExcel($dateValue);
109 
			} else {
110 
				$saveReturnDateType = PHPExcel_Calculation_Functions::getReturnDateType();
111 
				PHPExcel_Calculation_Functions::setReturnDateType(PHPExcel_Calculation_Functions::RETURNDATE_EXCEL);
112 
				$dateValue = self::DATEVALUE($dateValue);
113 
				PHPExcel_Calculation_Functions::setReturnDateType($saveReturnDateType);
114 
			}
115 
		}
116 
		return $dateValue;
117 
	}	//	function _getDateValue()
118 
 
119 
 
120 
	/**
121 
	 * _getTimeValue
122 
	 *
123 
	 * @param	string	$timeValue
124 
	 * @return	mixed	Excel date/time serial value, or string if error
125 
	 */
126 
	private static function _getTimeValue($timeValue) {
127 
		$saveReturnDateType = PHPExcel_Calculation_Functions::getReturnDateType();
128 
		PHPExcel_Calculation_Functions::setReturnDateType(PHPExcel_Calculation_Functions::RETURNDATE_EXCEL);
129 
		$timeValue = self::TIMEVALUE($timeValue);
130 
		PHPExcel_Calculation_Functions::setReturnDateType($saveReturnDateType);
131 
		return $timeValue;
132 
	}	//	function _getTimeValue()
133 
 
134 
 
135 
	private static function _adjustDateByMonths($dateValue = 0, $adjustmentMonths = 0) {
136 
		// Execute function
137 
		$PHPDateObject = PHPExcel_Shared_Date::ExcelToPHPObject($dateValue);
138 
		$oMonth = (int) $PHPDateObject->format('m');
139 
		$oYear = (int) $PHPDateObject->format('Y');
140 
 
141 
		$adjustmentMonthsString = (string) $adjustmentMonths;
142 
		if ($adjustmentMonths > 0) {
143 
			$adjustmentMonthsString = '+'.$adjustmentMonths;
144 
		}
145 
		if ($adjustmentMonths != 0) {
146 
			$PHPDateObject->modify($adjustmentMonthsString.' months');
147 
		}
148 
		$nMonth = (int) $PHPDateObject->format('m');
149 
		$nYear = (int) $PHPDateObject->format('Y');
150 
 
151 
		$monthDiff = ($nMonth - $oMonth) + (($nYear - $oYear) * 12);
152 
		if ($monthDiff != $adjustmentMonths) {
153 
			$adjustDays = (int) $PHPDateObject->format('d');
154 
			$adjustDaysString = '-'.$adjustDays.' days';
155 
			$PHPDateObject->modify($adjustDaysString);
156 
		}
157 
		return $PHPDateObject;
158 
	}	//	function _adjustDateByMonths()
159 
 
160 
 
161 
	/**
162 
	 * DATETIMENOW
163 
	 *
164 
	 * Returns the current date and time.
165 
	 * The NOW function is useful when you need to display the current date and time on a worksheet or
166 
	 * calculate a value based on the current date and time, and have that value updated each time you
167 
	 * open the worksheet.
168 
	 *
169 
	 * NOTE: When used in a Cell Formula, MS Excel changes the cell format so that it matches the date
170 
	 * and time format of your regional settings. PHPExcel does not change cell formatting in this way.
171 
	 *
172 
	 * Excel Function:
173 
	 *		NOW()
174 
	 *
175 
	 * @access	public
176 
	 * @category Date/Time Functions
177 
	 * @return	mixed	Excel date/time serial value, PHP date/time serial value or PHP date/time object,
178 
	 *						depending on the value of the ReturnDateType flag
179 
	 */
180 
	public static function DATETIMENOW() {
181 
		$saveTimeZone = date_default_timezone_get();
182 
		date_default_timezone_set('UTC');
183 
		$retValue = False;
184 
		switch (PHPExcel_Calculation_Functions::getReturnDateType()) {
185 
			case PHPExcel_Calculation_Functions::RETURNDATE_EXCEL :
186 
					$retValue = (float) PHPExcel_Shared_Date::PHPToExcel(time());
187 
					break;
188 
			case PHPExcel_Calculation_Functions::RETURNDATE_PHP_NUMERIC :
189 
					$retValue = (integer) time();
190 
					break;
191 
			case PHPExcel_Calculation_Functions::RETURNDATE_PHP_OBJECT :
192 
					$retValue = new DateTime();
193 
					break;
194 
		}
195 
		date_default_timezone_set($saveTimeZone);
196 
 
197 
		return $retValue;
198 
	}	//	function DATETIMENOW()
199 
 
200 
 
201 
	/**
202 
	 * DATENOW
203 
	 *
204 
	 * Returns the current date.
205 
	 * The NOW function is useful when you need to display the current date and time on a worksheet or
206 
	 * calculate a value based on the current date and time, and have that value updated each time you
207 
	 * open the worksheet.
208 
	 *
209 
	 * NOTE: When used in a Cell Formula, MS Excel changes the cell format so that it matches the date
210 
	 * and time format of your regional settings. PHPExcel does not change cell formatting in this way.
211 
	 *
212 
	 * Excel Function:
213 
	 *		TODAY()
214 
	 *
215 
	 * @access	public
216 
	 * @category Date/Time Functions
217 
	 * @return	mixed	Excel date/time serial value, PHP date/time serial value or PHP date/time object,
218 
	 *						depending on the value of the ReturnDateType flag
219 
	 */
220 
	public static function DATENOW() {
221 
		$saveTimeZone = date_default_timezone_get();
222 
		date_default_timezone_set('UTC');
223 
		$retValue = False;
224 
		$excelDateTime = floor(PHPExcel_Shared_Date::PHPToExcel(time()));
225 
		switch (PHPExcel_Calculation_Functions::getReturnDateType()) {
226 
			case PHPExcel_Calculation_Functions::RETURNDATE_EXCEL :
227 
					$retValue = (float) $excelDateTime;
228 
					break;
229 
			case PHPExcel_Calculation_Functions::RETURNDATE_PHP_NUMERIC :
230 
					$retValue = (integer) PHPExcel_Shared_Date::ExcelToPHP($excelDateTime);
231 
					break;
232 
			case PHPExcel_Calculation_Functions::RETURNDATE_PHP_OBJECT :
233 
					$retValue = PHPExcel_Shared_Date::ExcelToPHPObject($excelDateTime);
234 
					break;
235 
		}
236 
		date_default_timezone_set($saveTimeZone);
237 
 
238 
		return $retValue;
239 
	}	//	function DATENOW()
240 
 
241 
 
242 
	/**
243 
	 * DATE
244 
	 *
245 
	 * The DATE function returns a value that represents a particular date.
246 
	 *
247 
	 * NOTE: When used in a Cell Formula, MS Excel changes the cell format so that it matches the date
248 
	 * format of your regional settings. PHPExcel does not change cell formatting in this way.
249 
	 *
250 
	 * Excel Function:
251 
	 *		DATE(year,month,day)
252 
	 *
253 
	 * PHPExcel is a lot more forgiving than MS Excel when passing non numeric values to this function.
254 
	 * A Month name or abbreviation (English only at this point) such as 'January' or 'Jan' will still be accepted,
255 
	 *     as will a day value with a suffix (e.g. '21st' rather than simply 21); again only English language.
256 
	 *
257 
	 * @access	public
258 
	 * @category Date/Time Functions
259 
	 * @param	integer		$year	The value of the year argument can include one to four digits.
260 
	 *								Excel interprets the year argument according to the configured
261 
	 *								date system: 1900 or 1904.
262 
	 *								If year is between 0 (zero) and 1899 (inclusive), Excel adds that
263 
	 *								value to 1900 to calculate the year. For example, DATE(108,1,2)
264 
	 *								returns January 2, 2008 (1900+108).
265 
	 *								If year is between 1900 and 9999 (inclusive), Excel uses that
266 
	 *								value as the year. For example, DATE(2008,1,2) returns January 2,
267 
	 *								2008.
268 
	 *								If year is less than 0 or is 10000 or greater, Excel returns the
269 
	 *								#NUM! error value.
270 
	 * @param	integer		$month	A positive or negative integer representing the month of the year
271 
	 *								from 1 to 12 (January to December).
272 
	 *								If month is greater than 12, month adds that number of months to
273 
	 *								the first month in the year specified. For example, DATE(2008,14,2)
274 
	 *								returns the serial number representing February 2, 2009.
275 
	 *								If month is less than 1, month subtracts the magnitude of that
276 
	 *								number of months, plus 1, from the first month in the year
277 
	 *								specified. For example, DATE(2008,-3,2) returns the serial number
278 
	 *								representing September 2, 2007.
279 
	 * @param	integer		$day	A positive or negative integer representing the day of the month
280 
	 *								from 1 to 31.
281 
	 *								If day is greater than the number of days in the month specified,
282 
	 *								day adds that number of days to the first day in the month. For
283 
	 *								example, DATE(2008,1,35) returns the serial number representing
284 
	 *								February 4, 2008.
285 
	 *								If day is less than 1, day subtracts the magnitude that number of
286 
	 *								days, plus one, from the first day of the month specified. For
287 
	 *								example, DATE(2008,1,-15) returns the serial number representing
288 
	 *								December 16, 2007.
289 
	 * @return	mixed	Excel date/time serial value, PHP date/time serial value or PHP date/time object,
290 
	 *						depending on the value of the ReturnDateType flag
291 
	 */
292 
	public static function DATE($year = 0, $month = 1, $day = 1) {
293 
		$year	= PHPExcel_Calculation_Functions::flattenSingleValue($year);
294 
		$month	= PHPExcel_Calculation_Functions::flattenSingleValue($month);
295 
		$day	= PHPExcel_Calculation_Functions::flattenSingleValue($day);
296 
 
297 
		if (($month !== NULL) && (!is_numeric($month))) {
298 
            $month = PHPExcel_Shared_Date::monthStringToNumber($month);
299 
		}
300 
 
301 
		if (($day !== NULL) && (!is_numeric($day))) {
302 
            $day = PHPExcel_Shared_Date::dayStringToNumber($day);
303 
		}
304 
 
305 
		$year	= ($year !== NULL)	? PHPExcel_Shared_String::testStringAsNumeric($year) : 0;
306 
		$month	= ($month !== NULL)	? PHPExcel_Shared_String::testStringAsNumeric($month) : 0;
307 
		$day	= ($day !== NULL)	? PHPExcel_Shared_String::testStringAsNumeric($day) : 0;
308 
		if ((!is_numeric($year)) ||
309 
			(!is_numeric($month)) ||
310 
			(!is_numeric($day))) {
311 
			return PHPExcel_Calculation_Functions::VALUE();
312 
		}
313 
		$year	= (integer) $year;
314 
		$month	= (integer) $month;
315 
		$day	= (integer) $day;
316 
 
317 
		$baseYear = PHPExcel_Shared_Date::getExcelCalendar();
318 
		// Validate parameters
319 
		if ($year < ($baseYear-1900)) {
320 
			return PHPExcel_Calculation_Functions::NaN();
321 
		}
322 
		if ((($baseYear-1900) != 0) && ($year < $baseYear) && ($year >= 1900)) {
323 
			return PHPExcel_Calculation_Functions::NaN();
324 
		}
325 
 
326 
		if (($year < $baseYear) && ($year >= ($baseYear-1900))) {
327 
			$year += 1900;
328 
		}
329 
 
330 
		if ($month < 1) {
331 
			//	Handle year/month adjustment if month < 1
332 
			--$month;
333 
			$year += ceil($month / 12) - 1;
334 
			$month = 13 - abs($month % 12);
335 
		} elseif ($month > 12) {
336 
			//	Handle year/month adjustment if month > 12
337 
			$year += floor($month / 12);
338 
			$month = ($month % 12);
339 
		}
340 
 
341 
		// Re-validate the year parameter after adjustments
342 
		if (($year < $baseYear) || ($year >= 10000)) {
343 
			return PHPExcel_Calculation_Functions::NaN();
344 
		}
345 
 
346 
		// Execute function
347 
		$excelDateValue = PHPExcel_Shared_Date::FormattedPHPToExcel($year, $month, $day);
348 
		switch (PHPExcel_Calculation_Functions::getReturnDateType()) {
349 
			case PHPExcel_Calculation_Functions::RETURNDATE_EXCEL :
350 
					return (float) $excelDateValue;
351 
			case PHPExcel_Calculation_Functions::RETURNDATE_PHP_NUMERIC :
352 
					return (integer) PHPExcel_Shared_Date::ExcelToPHP($excelDateValue);
353 
			case PHPExcel_Calculation_Functions::RETURNDATE_PHP_OBJECT :
354 
					return PHPExcel_Shared_Date::ExcelToPHPObject($excelDateValue);
355 
		}
356 
	}	//	function DATE()
357 
 
358 
 
359 
	/**
360 
	 * TIME
361 
	 *
362 
	 * The TIME function returns a value that represents a particular time.
363 
	 *
364 
	 * NOTE: When used in a Cell Formula, MS Excel changes the cell format so that it matches the time
365 
	 * format of your regional settings. PHPExcel does not change cell formatting in this way.
366 
	 *
367 
	 * Excel Function:
368 
	 *		TIME(hour,minute,second)
369 
	 *
370 
	 * @access	public
371 
	 * @category Date/Time Functions
372 
	 * @param	integer		$hour		A number from 0 (zero) to 32767 representing the hour.
373 
	 *									Any value greater than 23 will be divided by 24 and the remainder
374 
	 *									will be treated as the hour value. For example, TIME(27,0,0) =
375 
	 *									TIME(3,0,0) = .125 or 3:00 AM.
376 
	 * @param	integer		$minute		A number from 0 to 32767 representing the minute.
377 
	 *									Any value greater than 59 will be converted to hours and minutes.
378 
	 *									For example, TIME(0,750,0) = TIME(12,30,0) = .520833 or 12:30 PM.
379 
	 * @param	integer		$second		A number from 0 to 32767 representing the second.
380 
	 *									Any value greater than 59 will be converted to hours, minutes,
381 
	 *									and seconds. For example, TIME(0,0,2000) = TIME(0,33,22) = .023148
382 
	 *									or 12:33:20 AM
383 
	 * @return	mixed	Excel date/time serial value, PHP date/time serial value or PHP date/time object,
384 
	 *						depending on the value of the ReturnDateType flag
385 
	 */
386 
	public static function TIME($hour = 0, $minute = 0, $second = 0) {
387 
		$hour	= PHPExcel_Calculation_Functions::flattenSingleValue($hour);
388 
		$minute	= PHPExcel_Calculation_Functions::flattenSingleValue($minute);
389 
		$second	= PHPExcel_Calculation_Functions::flattenSingleValue($second);
390 
 
391 
		if ($hour == '') { $hour = 0; }
392 
		if ($minute == '') { $minute = 0; }
393 
		if ($second == '') { $second = 0; }
394 
 
395 
		if ((!is_numeric($hour)) || (!is_numeric($minute)) || (!is_numeric($second))) {
396 
			return PHPExcel_Calculation_Functions::VALUE();
397 
		}
398 
		$hour	= (integer) $hour;
399 
		$minute	= (integer) $minute;
400 
		$second	= (integer) $second;
401 
 
402 
		if ($second < 0) {
403 
			$minute += floor($second / 60);
404 
			$second = 60 - abs($second % 60);
405 
			if ($second == 60) { $second = 0; }
406 
		} elseif ($second >= 60) {
407 
			$minute += floor($second / 60);
408 
			$second = $second % 60;
409 
		}
410 
		if ($minute < 0) {
411 
			$hour += floor($minute / 60);
412 
			$minute = 60 - abs($minute % 60);
413 
			if ($minute == 60) { $minute = 0; }
414 
		} elseif ($minute >= 60) {
415 
			$hour += floor($minute / 60);
416 
			$minute = $minute % 60;
417 
		}
418 
 
419 
		if ($hour > 23) {
420 
			$hour = $hour % 24;
421 
		} elseif ($hour < 0) {
422 
			return PHPExcel_Calculation_Functions::NaN();
423 
		}
424 
 
425 
		// Execute function
426 
		switch (PHPExcel_Calculation_Functions::getReturnDateType()) {
427 
			case PHPExcel_Calculation_Functions::RETURNDATE_EXCEL :
428 
					$date = 0;
429 
					$calendar = PHPExcel_Shared_Date::getExcelCalendar();
430 
					if ($calendar != PHPExcel_Shared_Date::CALENDAR_WINDOWS_1900) {
431 
						$date = 1;
432 
					}
433 
					return (float) PHPExcel_Shared_Date::FormattedPHPToExcel($calendar, 1, $date, $hour, $minute, $second);
434 
			case PHPExcel_Calculation_Functions::RETURNDATE_PHP_NUMERIC :
435 
					return (integer) PHPExcel_Shared_Date::ExcelToPHP(PHPExcel_Shared_Date::FormattedPHPToExcel(1970, 1, 1, $hour, $minute, $second));	// -2147468400; //	-2147472000 + 3600
436 
			case PHPExcel_Calculation_Functions::RETURNDATE_PHP_OBJECT :
437 
					$dayAdjust = 0;
438 
					if ($hour < 0) {
439 
						$dayAdjust = floor($hour / 24);
440 
						$hour = 24 - abs($hour % 24);
441 
						if ($hour == 24) { $hour = 0; }
442 
					} elseif ($hour >= 24) {
443 
						$dayAdjust = floor($hour / 24);
444 
						$hour = $hour % 24;
445 
					}
446 
					$phpDateObject = new DateTime('1900-01-01 '.$hour.':'.$minute.':'.$second);
447 
					if ($dayAdjust != 0) {
448 
						$phpDateObject->modify($dayAdjust.' days');
449 
					}
450 
					return $phpDateObject;
451 
		}
452 
	}	//	function TIME()
453 
 
454 
 
455 
	/**
456 
	 * DATEVALUE
457 
	 *
458 
	 * Returns a value that represents a particular date.
459 
	 * Use DATEVALUE to convert a date represented by a text string to an Excel or PHP date/time stamp
460 
	 * value.
461 
	 *
462 
	 * NOTE: When used in a Cell Formula, MS Excel changes the cell format so that it matches the date
463 
	 * format of your regional settings. PHPExcel does not change cell formatting in this way.
464 
	 *
465 
	 * Excel Function:
466 
	 *		DATEVALUE(dateValue)
467 
	 *
468 
	 * @access	public
469 
	 * @category Date/Time Functions
470 
	 * @param	string	$dateValue		Text that represents a date in a Microsoft Excel date format.
471 
	 *									For example, "1/30/2008" or "30-Jan-2008" are text strings within
472 
	 *									quotation marks that represent dates. Using the default date
473 
	 *									system in Excel for Windows, date_text must represent a date from
474 
	 *									January 1, 1900, to December 31, 9999. Using the default date
475 
	 *									system in Excel for the Macintosh, date_text must represent a date
476 
	 *									from January 1, 1904, to December 31, 9999. DATEVALUE returns the
477 
	 *									#VALUE! error value if date_text is out of this range.
478 
	 * @return	mixed	Excel date/time serial value, PHP date/time serial value or PHP date/time object,
479 
	 *						depending on the value of the ReturnDateType flag
480 
	 */
481 
	public static function DATEVALUE($dateValue = 1) {
482 
		$dateValue = trim(PHPExcel_Calculation_Functions::flattenSingleValue($dateValue),'"');
483 
		//	Strip any ordinals because they're allowed in Excel (English only)
484 
		$dateValue = preg_replace('/(\d)(st|nd|rd|th)([ -\/])/Ui','$1$3',$dateValue);
485 
		//	Convert separators (/ . or space) to hyphens (should also handle dot used for ordinals in some countries, e.g. Denmark, Germany)
486 
		$dateValue	= str_replace(array('/','.','-','  '),array(' ',' ',' ',' '),$dateValue);
487 
 
488 
		$yearFound = false;
489 
		$t1 = explode(' ',$dateValue);
490 
		foreach($t1 as &$t) {
491 
			if ((is_numeric($t)) && ($t > 31)) {
492 
				if ($yearFound) {
493 
					return PHPExcel_Calculation_Functions::VALUE();
494 
				} else {
495 
					if ($t < 100) { $t += 1900; }
496 
					$yearFound = true;
497 
				}
498 
			}
499 
		}
500 
		if ((count($t1) == 1) && (strpos($t,':') != false)) {
501 
			//	We've been fed a time value without any date
502 
			return 0.0;
503 
		} elseif (count($t1) == 2) {
504 
			//	We only have two parts of the date: either day/month or month/year
505 
			if ($yearFound) {
506 
				array_unshift($t1,1);
507 
			} else {
508 
				array_push($t1,date('Y'));
509 
			}
510 
		}
511 
		unset($t);
512 
		$dateValue = implode(' ',$t1);
513 
 
514 
		$PHPDateArray = date_parse($dateValue);
515 
		if (($PHPDateArray === False) || ($PHPDateArray['error_count'] > 0)) {
516 
			$testVal1 = strtok($dateValue,'- ');
517 
			if ($testVal1 !== False) {
518 
				$testVal2 = strtok('- ');
519 
				if ($testVal2 !== False) {
520 
					$testVal3 = strtok('- ');
521 
					if ($testVal3 === False) {
522 
						$testVal3 = strftime('%Y');
523 
					}
524 
				} else {
525 
					return PHPExcel_Calculation_Functions::VALUE();
526 
				}
527 
			} else {
528 
				return PHPExcel_Calculation_Functions::VALUE();
529 
			}
530 
			$PHPDateArray = date_parse($testVal1.'-'.$testVal2.'-'.$testVal3);
531 
			if (($PHPDateArray === False) || ($PHPDateArray['error_count'] > 0)) {
532 
				$PHPDateArray = date_parse($testVal2.'-'.$testVal1.'-'.$testVal3);
533 
				if (($PHPDateArray === False) || ($PHPDateArray['error_count'] > 0)) {
534 
					return PHPExcel_Calculation_Functions::VALUE();
535 
				}
536 
			}
537 
		}
538 
 
539 
		if (($PHPDateArray !== False) && ($PHPDateArray['error_count'] == 0)) {
540 
			// Execute function
541 
			if ($PHPDateArray['year'] == '')	{ $PHPDateArray['year'] = strftime('%Y'); }
542 
			if ($PHPDateArray['year'] < 1900)
543 
				return PHPExcel_Calculation_Functions::VALUE();
544 
			if ($PHPDateArray['month'] == '')	{ $PHPDateArray['month'] = strftime('%m'); }
545 
			if ($PHPDateArray['day'] == '')		{ $PHPDateArray['day'] = strftime('%d'); }
546 
			$excelDateValue = floor(PHPExcel_Shared_Date::FormattedPHPToExcel($PHPDateArray['year'],$PHPDateArray['month'],$PHPDateArray['day'],$PHPDateArray['hour'],$PHPDateArray['minute'],$PHPDateArray['second']));
547 
 
548 
			switch (PHPExcel_Calculation_Functions::getReturnDateType()) {
549 
				case PHPExcel_Calculation_Functions::RETURNDATE_EXCEL :
550 
						return (float) $excelDateValue;
551 
				case PHPExcel_Calculation_Functions::RETURNDATE_PHP_NUMERIC :
552 
						return (integer) PHPExcel_Shared_Date::ExcelToPHP($excelDateValue);
553 
				case PHPExcel_Calculation_Functions::RETURNDATE_PHP_OBJECT :
554 
						return new DateTime($PHPDateArray['year'].'-'.$PHPDateArray['month'].'-'.$PHPDateArray['day'].' 00:00:00');
555 
			}
556 
		}
557 
		return PHPExcel_Calculation_Functions::VALUE();
558 
	}	//	function DATEVALUE()
559 
 
560 
 
561 
	/**
562 
	 * TIMEVALUE
563 
	 *
564 
	 * Returns a value that represents a particular time.
565 
	 * Use TIMEVALUE to convert a time represented by a text string to an Excel or PHP date/time stamp
566 
	 * value.
567 
	 *
568 
	 * NOTE: When used in a Cell Formula, MS Excel changes the cell format so that it matches the time
569 
	 * format of your regional settings. PHPExcel does not change cell formatting in this way.
570 
	 *
571 
	 * Excel Function:
572 
	 *		TIMEVALUE(timeValue)
573 
	 *
574 
	 * @access	public
575 
	 * @category Date/Time Functions
576 
	 * @param	string	$timeValue		A text string that represents a time in any one of the Microsoft
577 
	 *									Excel time formats; for example, "6:45 PM" and "18:45" text strings
578 
	 *									within quotation marks that represent time.
579 
	 *									Date information in time_text is ignored.
580 
	 * @return	mixed	Excel date/time serial value, PHP date/time serial value or PHP date/time object,
581 
	 *						depending on the value of the ReturnDateType flag
582 
	 */
583 
	public static function TIMEVALUE($timeValue) {
584 
		$timeValue = trim(PHPExcel_Calculation_Functions::flattenSingleValue($timeValue),'"');
585 
		$timeValue	= str_replace(array('/','.'),array('-','-'),$timeValue);
586 
 
587 
		$PHPDateArray = date_parse($timeValue);
588 
		if (($PHPDateArray !== False) && ($PHPDateArray['error_count'] == 0)) {
589 
			if (PHPExcel_Calculation_Functions::getCompatibilityMode() == PHPExcel_Calculation_Functions::COMPATIBILITY_OPENOFFICE) {
590 
				$excelDateValue = PHPExcel_Shared_Date::FormattedPHPToExcel($PHPDateArray['year'],$PHPDateArray['month'],$PHPDateArray['day'],$PHPDateArray['hour'],$PHPDateArray['minute'],$PHPDateArray['second']);
591 
			} else {
592 
				$excelDateValue = PHPExcel_Shared_Date::FormattedPHPToExcel(1900,1,1,$PHPDateArray['hour'],$PHPDateArray['minute'],$PHPDateArray['second']) - 1;
593 
			}
594 
 
595 
			switch (PHPExcel_Calculation_Functions::getReturnDateType()) {
596 
				case PHPExcel_Calculation_Functions::RETURNDATE_EXCEL :
597 
						return (float) $excelDateValue;
598 
				case PHPExcel_Calculation_Functions::RETURNDATE_PHP_NUMERIC :
599 
						return (integer) $phpDateValue = PHPExcel_Shared_Date::ExcelToPHP($excelDateValue+25569) - 3600;;
600 
				case PHPExcel_Calculation_Functions::RETURNDATE_PHP_OBJECT :
601 
						return new DateTime('1900-01-01 '.$PHPDateArray['hour'].':'.$PHPDateArray['minute'].':'.$PHPDateArray['second']);
602 
			}
603 
		}
604 
		return PHPExcel_Calculation_Functions::VALUE();
605 
	}	//	function TIMEVALUE()
606 
 
607 
 
608 
	/**
609 
	 * DATEDIF
610 
	 *
611 
	 * @param	mixed	$startDate		Excel date serial value, PHP date/time stamp, PHP DateTime object
612 
	 *									or a standard date string
613 
	 * @param	mixed	$endDate		Excel date serial value, PHP date/time stamp, PHP DateTime object
614 
	 *									or a standard date string
615 
	 * @param	string	$unit
616 
	 * @return	integer	Interval between the dates
617 
	 */
618 
	public static function DATEDIF($startDate = 0, $endDate = 0, $unit = 'D') {
619 
		$startDate	= PHPExcel_Calculation_Functions::flattenSingleValue($startDate);
620 
		$endDate	= PHPExcel_Calculation_Functions::flattenSingleValue($endDate);
621 
		$unit		= strtoupper(PHPExcel_Calculation_Functions::flattenSingleValue($unit));
622 
 
623 
		if (is_string($startDate = self::_getDateValue($startDate))) {
624 
			return PHPExcel_Calculation_Functions::VALUE();
625 
		}
626 
		if (is_string($endDate = self::_getDateValue($endDate))) {
627 
			return PHPExcel_Calculation_Functions::VALUE();
628 
		}
629 
 
630 
		// Validate parameters
631 
		if ($startDate >= $endDate) {
632 
			return PHPExcel_Calculation_Functions::NaN();
633 
		}
634 
 
635 
		// Execute function
636 
		$difference = $endDate - $startDate;
637 
 
638 
		$PHPStartDateObject = PHPExcel_Shared_Date::ExcelToPHPObject($startDate);
639 
		$startDays = $PHPStartDateObject->format('j');
640 
		$startMonths = $PHPStartDateObject->format('n');
641 
		$startYears = $PHPStartDateObject->format('Y');
642 
 
643 
		$PHPEndDateObject = PHPExcel_Shared_Date::ExcelToPHPObject($endDate);
644 
		$endDays = $PHPEndDateObject->format('j');
645 
		$endMonths = $PHPEndDateObject->format('n');
646 
		$endYears = $PHPEndDateObject->format('Y');
647 
 
648 
		$retVal = PHPExcel_Calculation_Functions::NaN();
649 
		switch ($unit) {
650 
			case 'D':
651 
				$retVal = intval($difference);
652 
				break;
653 
			case 'M':
654 
				$retVal = intval($endMonths - $startMonths) + (intval($endYears - $startYears) * 12);
655 
				//	We're only interested in full months
656 
				if ($endDays < $startDays) {
657 
					--$retVal;
658 
				}
659 
				break;
660 
			case 'Y':
661 
				$retVal = intval($endYears - $startYears);
662 
				//	We're only interested in full months
663 
				if ($endMonths < $startMonths) {
664 
					--$retVal;
665 
				} elseif (($endMonths == $startMonths) && ($endDays < $startDays)) {
666 
					--$retVal;
667 
				}
668 
				break;
669 
			case 'MD':
670 
				if ($endDays < $startDays) {
671 
					$retVal = $endDays;
672 
					$PHPEndDateObject->modify('-'.$endDays.' days');
673 
					$adjustDays = $PHPEndDateObject->format('j');
674 
					if ($adjustDays > $startDays) {
675 
						$retVal += ($adjustDays - $startDays);
676 
					}
677 
				} else {
678 
					$retVal = $endDays - $startDays;
679 
				}
680 
				break;
681 
			case 'YM':
682 
				$retVal = intval($endMonths - $startMonths);
683 
				if ($retVal < 0) $retVal = 12 + $retVal;
684 
				//	We're only interested in full months
685 
				if ($endDays < $startDays) {
686 
					--$retVal;
687 
				}
688 
				break;
689 
			case 'YD':
690 
				$retVal = intval($difference);
691 
				if ($endYears > $startYears) {
692 
					while ($endYears > $startYears) {
693 
						$PHPEndDateObject->modify('-1 year');
694 
						$endYears = $PHPEndDateObject->format('Y');
695 
					}
696 
					$retVal = $PHPEndDateObject->format('z') - $PHPStartDateObject->format('z');
697 
					if ($retVal < 0) { $retVal += 365; }
698 
				}
699 
				break;
700 
			default:
701 
				$retVal = PHPExcel_Calculation_Functions::NaN();
702 
		}
703 
		return $retVal;
704 
	}	//	function DATEDIF()
705 
 
706 
 
707 
	/**
708 
	 * DAYS360
709 
	 *
710 
	 * Returns the number of days between two dates based on a 360-day year (twelve 30-day months),
711 
	 * which is used in some accounting calculations. Use this function to help compute payments if
712 
	 * your accounting system is based on twelve 30-day months.
713 
	 *
714 
	 * Excel Function:
715 
	 *		DAYS360(startDate,endDate[,method])
716 
	 *
717 
	 * @access	public
718 
	 * @category Date/Time Functions
719 
	 * @param	mixed		$startDate		Excel date serial value (float), PHP date timestamp (integer),
720 
	 *										PHP DateTime object, or a standard date string
721 
	 * @param	mixed		$endDate		Excel date serial value (float), PHP date timestamp (integer),
722 
	 *										PHP DateTime object, or a standard date string
723 
	 * @param	boolean		$method			US or European Method
724 
	 *										FALSE or omitted: U.S. (NASD) method. If the starting date is
725 
	 *										the last day of a month, it becomes equal to the 30th of the
726 
	 *										same month. If the ending date is the last day of a month and
727 
	 *										the starting date is earlier than the 30th of a month, the
728 
	 *										ending date becomes equal to the 1st of the next month;
729 
	 *										otherwise the ending date becomes equal to the 30th of the
730 
	 *										same month.
731 
	 *										TRUE: European method. Starting dates and ending dates that
732 
	 *										occur on the 31st of a month become equal to the 30th of the
733 
	 *										same month.
734 
	 * @return	integer		Number of days between start date and end date
735 
	 */
736 
	public static function DAYS360($startDate = 0, $endDate = 0, $method = false) {
737 
		$startDate	= PHPExcel_Calculation_Functions::flattenSingleValue($startDate);
738 
		$endDate	= PHPExcel_Calculation_Functions::flattenSingleValue($endDate);
739 
 
740 
		if (is_string($startDate = self::_getDateValue($startDate))) {
741 
			return PHPExcel_Calculation_Functions::VALUE();
742 
		}
743 
		if (is_string($endDate = self::_getDateValue($endDate))) {
744 
			return PHPExcel_Calculation_Functions::VALUE();
745 
		}
746 
 
747 
		if (!is_bool($method)) {
748 
			return PHPExcel_Calculation_Functions::VALUE();
749 
		}
750 
 
751 
		// Execute function
752 
		$PHPStartDateObject = PHPExcel_Shared_Date::ExcelToPHPObject($startDate);
753 
		$startDay = $PHPStartDateObject->format('j');
754 
		$startMonth = $PHPStartDateObject->format('n');
755 
		$startYear = $PHPStartDateObject->format('Y');
756 
 
757 
		$PHPEndDateObject = PHPExcel_Shared_Date::ExcelToPHPObject($endDate);
758 
		$endDay = $PHPEndDateObject->format('j');
759 
		$endMonth = $PHPEndDateObject->format('n');
760 
		$endYear = $PHPEndDateObject->format('Y');
761 
 
762 
		return self::_dateDiff360($startDay, $startMonth, $startYear, $endDay, $endMonth, $endYear, !$method);
763 
	}	//	function DAYS360()
764 
 
765 
 
766 
	/**
767 
	 * YEARFRAC
768 
	 *
769 
	 * Calculates the fraction of the year represented by the number of whole days between two dates
770 
	 * (the start_date and the end_date).
771 
	 * Use the YEARFRAC worksheet function to identify the proportion of a whole year's benefits or
772 
	 * obligations to assign to a specific term.
773 
	 *
774 
	 * Excel Function:
775 
	 *		YEARFRAC(startDate,endDate[,method])
776 
	 *
777 
	 * @access	public
778 
	 * @category Date/Time Functions
779 
	 * @param	mixed	$startDate		Excel date serial value (float), PHP date timestamp (integer),
780 
	 *									PHP DateTime object, or a standard date string
781 
	 * @param	mixed	$endDate		Excel date serial value (float), PHP date timestamp (integer),
782 
	 *									PHP DateTime object, or a standard date string
783 
	 * @param	integer	$method			Method used for the calculation
784 
	 *										0 or omitted	US (NASD) 30/360
785 
	 *										1				Actual/actual
786 
	 *										2				Actual/360
787 
	 *										3				Actual/365
788 
	 *										4				European 30/360
789 
	 * @return	float	fraction of the year
790 
	 */
791 
	public static function YEARFRAC($startDate = 0, $endDate = 0, $method = 0) {
792 
		$startDate	= PHPExcel_Calculation_Functions::flattenSingleValue($startDate);
793 
		$endDate	= PHPExcel_Calculation_Functions::flattenSingleValue($endDate);
794 
		$method		= PHPExcel_Calculation_Functions::flattenSingleValue($method);
795 
 
796 
		if (is_string($startDate = self::_getDateValue($startDate))) {
797 
			return PHPExcel_Calculation_Functions::VALUE();
798 
		}
799 
		if (is_string($endDate = self::_getDateValue($endDate))) {
800 
			return PHPExcel_Calculation_Functions::VALUE();
801 
		}
802 
 
803 
		if (((is_numeric($method)) && (!is_string($method))) || ($method == '')) {
804 
			switch($method) {
805 
				case 0	:
806 
					return self::DAYS360($startDate,$endDate) / 360;
807 
				case 1	:
808 
					$days = self::DATEDIF($startDate,$endDate);
809 
					$startYear = self::YEAR($startDate);
810 
					$endYear = self::YEAR($endDate);
811 
					$years = $endYear - $startYear + 1;
812 
					$leapDays = 0;
813 
					if ($years == 1) {
814 
						if (self::_isLeapYear($endYear)) {
815 
							$startMonth = self::MONTHOFYEAR($startDate);
816 
							$endMonth = self::MONTHOFYEAR($endDate);
817 
							$endDay = self::DAYOFMONTH($endDate);
818 
							if (($startMonth < 3) ||
819 
								(($endMonth * 100 + $endDay) >= (2 * 100 + 29))) {
820 
				     			$leapDays += 1;
821 
							}
822 
						}
823 
					} else {
824 
						for($year = $startYear; $year <= $endYear; ++$year) {
825 
							if ($year == $startYear) {
826 
								$startMonth = self::MONTHOFYEAR($startDate);
827 
								$startDay = self::DAYOFMONTH($startDate);
828 
								if ($startMonth < 3) {
829 
									$leapDays += (self::_isLeapYear($year)) ? 1 : 0;
830 
								}
831 
							} elseif($year == $endYear) {
832 
								$endMonth = self::MONTHOFYEAR($endDate);
833 
								$endDay = self::DAYOFMONTH($endDate);
834 
								if (($endMonth * 100 + $endDay) >= (2 * 100 + 29)) {
835 
									$leapDays += (self::_isLeapYear($year)) ? 1 : 0;
836 
								}
837 
							} else {
838 
								$leapDays += (self::_isLeapYear($year)) ? 1 : 0;
839 
							}
840 
						}
841 
						if ($years == 2) {
842 
							if (($leapDays == 0) && (self::_isLeapYear($startYear)) && ($days > 365)) {
843 
								$leapDays = 1;
844 
							} elseif ($days < 366) {
845 
								$years = 1;
846 
							}
847 
						}
848 
						$leapDays /= $years;
849 
					}
850 
					return $days / (365 + $leapDays);
851 
				case 2	:
852 
					return self::DATEDIF($startDate,$endDate) / 360;
853 
				case 3	:
854 
					return self::DATEDIF($startDate,$endDate) / 365;
855 
				case 4	:
856 
					return self::DAYS360($startDate,$endDate,True) / 360;
857 
			}
858 
		}
859 
		return PHPExcel_Calculation_Functions::VALUE();
860 
	}	//	function YEARFRAC()
861 
 
862 
 
863 
	/**
864 
	 * NETWORKDAYS
865 
	 *
866 
	 * Returns the number of whole working days between start_date and end_date. Working days
867 
	 * exclude weekends and any dates identified in holidays.
868 
	 * Use NETWORKDAYS to calculate employee benefits that accrue based on the number of days
869 
	 * worked during a specific term.
870 
	 *
871 
	 * Excel Function:
872 
	 *		NETWORKDAYS(startDate,endDate[,holidays[,holiday[,...]]])
873 
	 *
874 
	 * @access	public
875 
	 * @category Date/Time Functions
876 
	 * @param	mixed			$startDate		Excel date serial value (float), PHP date timestamp (integer),
877 
	 *											PHP DateTime object, or a standard date string
878 
	 * @param	mixed			$endDate		Excel date serial value (float), PHP date timestamp (integer),
879 
	 *											PHP DateTime object, or a standard date string
880 
	 * @param	mixed			$holidays,...	Optional series of Excel date serial value (float), PHP date
881 
	 *											timestamp (integer), PHP DateTime object, or a standard date
882 
	 *											strings that will be excluded from the working calendar, such
883 
	 *											as state and federal holidays and floating holidays.
884 
	 * @return	integer			Interval between the dates
885 
	 */
886 
	public static function NETWORKDAYS($startDate,$endDate) {
887 
		//	Retrieve the mandatory start and end date that are referenced in the function definition
888 
		$startDate	= PHPExcel_Calculation_Functions::flattenSingleValue($startDate);
889 
		$endDate	= PHPExcel_Calculation_Functions::flattenSingleValue($endDate);
890 
		//	Flush the mandatory start and end date that are referenced in the function definition, and get the optional days
891 
		$dateArgs = PHPExcel_Calculation_Functions::flattenArray(func_get_args());
892 
		array_shift($dateArgs);
893 
		array_shift($dateArgs);
894 
 
895 
		//	Validate the start and end dates
896 
		if (is_string($startDate = $sDate = self::_getDateValue($startDate))) {
897 
			return PHPExcel_Calculation_Functions::VALUE();
898 
		}
899 
		$startDate = (float) floor($startDate);
900 
		if (is_string($endDate = $eDate = self::_getDateValue($endDate))) {
901 
			return PHPExcel_Calculation_Functions::VALUE();
902 
		}
903 
		$endDate = (float) floor($endDate);
904 
 
905 
		if ($sDate > $eDate) {
906 
			$startDate = $eDate;
907 
			$endDate = $sDate;
908 
		}
909 
 
910 
		// Execute function
911 
		$startDoW = 6 - self::DAYOFWEEK($startDate,2);
912 
		if ($startDoW < 0) { $startDoW = 0; }
913 
		$endDoW = self::DAYOFWEEK($endDate,2);
914 
		if ($endDoW >= 6) { $endDoW = 0; }
915 
 
916 
		$wholeWeekDays = floor(($endDate - $startDate) / 7) * 5;
917 
		$partWeekDays = $endDoW + $startDoW;
918 
		if ($partWeekDays > 5) {
919 
			$partWeekDays -= 5;
920 
		}
921 
 
922 
		//	Test any extra holiday parameters
923 
		$holidayCountedArray = array();
924 
		foreach ($dateArgs as $holidayDate) {
925 
			if (is_string($holidayDate = self::_getDateValue($holidayDate))) {
926 
				return PHPExcel_Calculation_Functions::VALUE();
927 
			}
928 
			if (($holidayDate >= $startDate) && ($holidayDate <= $endDate)) {
929 
				if ((self::DAYOFWEEK($holidayDate,2) < 6) && (!in_array($holidayDate,$holidayCountedArray))) {
930 
					--$partWeekDays;
931 
					$holidayCountedArray[] = $holidayDate;
932 
				}
933 
			}
934 
		}
935 
 
936 
		if ($sDate > $eDate) {
937 
			return 0 - ($wholeWeekDays + $partWeekDays);
938 
		}
939 
		return $wholeWeekDays + $partWeekDays;
940 
	}	//	function NETWORKDAYS()
941 
 
942 
 
943 
	/**
944 
	 * WORKDAY
945 
	 *
946 
	 * Returns the date that is the indicated number of working days before or after a date (the
947 
	 * starting date). Working days exclude weekends and any dates identified as holidays.
948 
	 * Use WORKDAY to exclude weekends or holidays when you calculate invoice due dates, expected
949 
	 * delivery times, or the number of days of work performed.
950 
	 *
951 
	 * Excel Function:
952 
	 *		WORKDAY(startDate,endDays[,holidays[,holiday[,...]]])
953 
	 *
954 
	 * @access	public
955 
	 * @category Date/Time Functions
956 
	 * @param	mixed		$startDate		Excel date serial value (float), PHP date timestamp (integer),
957 
	 *										PHP DateTime object, or a standard date string
958 
	 * @param	integer		$endDays		The number of nonweekend and nonholiday days before or after
959 
	 *										startDate. A positive value for days yields a future date; a
960 
	 *										negative value yields a past date.
961 
	 * @param	mixed		$holidays,...	Optional series of Excel date serial value (float), PHP date
962 
	 *										timestamp (integer), PHP DateTime object, or a standard date
963 
	 *										strings that will be excluded from the working calendar, such
964 
	 *										as state and federal holidays and floating holidays.
965 
	 * @return	mixed	Excel date/time serial value, PHP date/time serial value or PHP date/time object,
966 
	 *						depending on the value of the ReturnDateType flag
967 
	 */
968 
	public static function WORKDAY($startDate,$endDays) {
969 
		//	Retrieve the mandatory start date and days that are referenced in the function definition
970 
		$startDate	= PHPExcel_Calculation_Functions::flattenSingleValue($startDate);
971 
		$endDays	= PHPExcel_Calculation_Functions::flattenSingleValue($endDays);
972 
		//	Flush the mandatory start date and days that are referenced in the function definition, and get the optional days
973 
		$dateArgs = PHPExcel_Calculation_Functions::flattenArray(func_get_args());
974 
		array_shift($dateArgs);
975 
		array_shift($dateArgs);
976 
 
977 
		if ((is_string($startDate = self::_getDateValue($startDate))) || (!is_numeric($endDays))) {
978 
			return PHPExcel_Calculation_Functions::VALUE();
979 
		}
980 
		$startDate = (float) floor($startDate);
981 
		$endDays = (int) floor($endDays);
982 
		//	If endDays is 0, we always return startDate
983 
		if ($endDays == 0) { return $startDate; }
984 
 
985 
		$decrementing = ($endDays < 0) ? True : False;
986 
 
987 
		//	Adjust the start date if it falls over a weekend
988 
 
989 
		$startDoW = self::DAYOFWEEK($startDate,3);
990 
		if (self::DAYOFWEEK($startDate,3) >= 5) {
991 
			$startDate += ($decrementing) ? -$startDoW + 4: 7 - $startDoW;
992 
			($decrementing) ? $endDays++ : $endDays--;
993 
		}
994 
 
995 
		//	Add endDays
996 
		$endDate = (float) $startDate + (intval($endDays / 5) * 7) + ($endDays % 5);
997 
 
998 
		//	Adjust the calculated end date if it falls over a weekend
999 
		$endDoW = self::DAYOFWEEK($endDate,3);
1000 
		if ($endDoW >= 5) {
1001 
			$endDate += ($decrementing) ? -$endDoW + 4: 7 - $endDoW;
1002 
		}
1003 
 
1004 
		//	Test any extra holiday parameters
1005 
		if (!empty($dateArgs)) {
1006 
			$holidayCountedArray = $holidayDates = array();
1007 
			foreach ($dateArgs as $holidayDate) {
1008 
				if (($holidayDate !== NULL) && (trim($holidayDate) > '')) {
1009 
					if (is_string($holidayDate = self::_getDateValue($holidayDate))) {
1010 
						return PHPExcel_Calculation_Functions::VALUE();
1011 
					}
1012 
					if (self::DAYOFWEEK($holidayDate,3) < 5) {
1013 
						$holidayDates[] = $holidayDate;
1014 
					}
1015 
				}
1016 
			}
1017 
			if ($decrementing) {
1018 
				rsort($holidayDates, SORT_NUMERIC);
1019 
			} else {
1020 
				sort($holidayDates, SORT_NUMERIC);
1021 
			}
1022 
			foreach ($holidayDates as $holidayDate) {
1023 
				if ($decrementing) {
1024 
					if (($holidayDate <= $startDate) && ($holidayDate >= $endDate)) {
1025 
						if (!in_array($holidayDate,$holidayCountedArray)) {
1026 
							--$endDate;
1027 
							$holidayCountedArray[] = $holidayDate;
1028 
						}
1029 
					}
1030 
				} else {
1031 
					if (($holidayDate >= $startDate) && ($holidayDate <= $endDate)) {
1032 
						if (!in_array($holidayDate,$holidayCountedArray)) {
1033 
							++$endDate;
1034 
							$holidayCountedArray[] = $holidayDate;
1035 
						}
1036 
					}
1037 
				}
1038 
				//	Adjust the calculated end date if it falls over a weekend
1039 
				$endDoW = self::DAYOFWEEK($endDate,3);
1040 
				if ($endDoW >= 5) {
1041 
					$endDate += ($decrementing) ? -$endDoW + 4: 7 - $endDoW;
1042 
				}
1043 
 
1044 
			}
1045 
		}
1046 
 
1047 
		switch (PHPExcel_Calculation_Functions::getReturnDateType()) {
1048 
			case PHPExcel_Calculation_Functions::RETURNDATE_EXCEL :
1049 
					return (float) $endDate;
1050 
			case PHPExcel_Calculation_Functions::RETURNDATE_PHP_NUMERIC :
1051 
					return (integer) PHPExcel_Shared_Date::ExcelToPHP($endDate);
1052 
			case PHPExcel_Calculation_Functions::RETURNDATE_PHP_OBJECT :
1053 
					return PHPExcel_Shared_Date::ExcelToPHPObject($endDate);
1054 
		}
1055 
	}	//	function WORKDAY()
1056 
 
1057 
 
1058 
	/**
1059 
	 * DAYOFMONTH
1060 
	 *
1061 
	 * Returns the day of the month, for a specified date. The day is given as an integer
1062 
	 * ranging from 1 to 31.
1063 
	 *
1064 
	 * Excel Function:
1065 
	 *		DAY(dateValue)
1066 
	 *
1067 
	 * @param	mixed	$dateValue		Excel date serial value (float), PHP date timestamp (integer),
1068 
	 *									PHP DateTime object, or a standard date string
1069 
	 * @return	int		Day of the month
1070 
	 */
1071 
	public static function DAYOFMONTH($dateValue = 1) {
1072 
		$dateValue	= PHPExcel_Calculation_Functions::flattenSingleValue($dateValue);
1073 
 
1074 
		if (is_string($dateValue = self::_getDateValue($dateValue))) {
1075 
			return PHPExcel_Calculation_Functions::VALUE();
1076 
		} elseif ($dateValue == 0.0) {
1077 
			return 0;
1078 
		} elseif ($dateValue < 0.0) {
1079 
			return PHPExcel_Calculation_Functions::NaN();
1080 
		}
1081 
 
1082 
		// Execute function
1083 
		$PHPDateObject = PHPExcel_Shared_Date::ExcelToPHPObject($dateValue);
1084 
 
1085 
		return (int) $PHPDateObject->format('j');
1086 
	}	//	function DAYOFMONTH()
1087 
 
1088 
 
1089 
	/**
1090 
	 * DAYOFWEEK
1091 
	 *
1092 
	 * Returns the day of the week for a specified date. The day is given as an integer
1093 
	 * ranging from 0 to 7 (dependent on the requested style).
1094 
	 *
1095 
	 * Excel Function:
1096 
	 *		WEEKDAY(dateValue[,style])
1097 
	 *
1098 
	 * @param	mixed	$dateValue		Excel date serial value (float), PHP date timestamp (integer),
1099 
	 *									PHP DateTime object, or a standard date string
1100 
	 * @param	int		$style			A number that determines the type of return value
1101 
	 *										1 or omitted	Numbers 1 (Sunday) through 7 (Saturday).
1102 
	 *										2				Numbers 1 (Monday) through 7 (Sunday).
1103 
	 *										3				Numbers 0 (Monday) through 6 (Sunday).
1104 
	 * @return	int		Day of the week value
1105 
	 */
1106 
	public static function DAYOFWEEK($dateValue = 1, $style = 1) {
1107 
		$dateValue	= PHPExcel_Calculation_Functions::flattenSingleValue($dateValue);
1108 
		$style		= PHPExcel_Calculation_Functions::flattenSingleValue($style);
1109 
 
1110 
		if (!is_numeric($style)) {
1111 
			return PHPExcel_Calculation_Functions::VALUE();
1112 
		} elseif (($style < 1) || ($style > 3)) {
1113 
			return PHPExcel_Calculation_Functions::NaN();
1114 
		}
1115 
		$style = floor($style);
1116 
 
1117 
		if (is_string($dateValue = self::_getDateValue($dateValue))) {
1118 
			return PHPExcel_Calculation_Functions::VALUE();
1119 
		} elseif ($dateValue < 0.0) {
1120 
			return PHPExcel_Calculation_Functions::NaN();
1121 
		}
1122 
 
1123 
		// Execute function
1124 
		$PHPDateObject = PHPExcel_Shared_Date::ExcelToPHPObject($dateValue);
1125 
		$DoW = $PHPDateObject->format('w');
1126 
 
1127 
		$firstDay = 1;
1128 
		switch ($style) {
1129 
			case 1: ++$DoW;
1130 
					break;
1131 
			case 2: if ($DoW == 0) { $DoW = 7; }
1132 
					break;
1133 
			case 3: if ($DoW == 0) { $DoW = 7; }
1134 
					$firstDay = 0;
1135 
					--$DoW;
1136 
					break;
1137 
		}
1138 
		if (PHPExcel_Calculation_Functions::getCompatibilityMode() == PHPExcel_Calculation_Functions::COMPATIBILITY_EXCEL) {
1139 
			//	Test for Excel's 1900 leap year, and introduce the error as required
1140 
			if (($PHPDateObject->format('Y') == 1900) && ($PHPDateObject->format('n') <= 2)) {
1141 
				--$DoW;
1142 
				if ($DoW < $firstDay) {
1143 
					$DoW += 7;
1144 
				}
1145 
			}
1146 
		}
1147 
 
1148 
		return (int) $DoW;
1149 
	}	//	function DAYOFWEEK()
1150 
 
1151 
 
1152 
	/**
1153 
	 * WEEKOFYEAR
1154 
	 *
1155 
	 * Returns the week of the year for a specified date.
1156 
	 * The WEEKNUM function considers the week containing January 1 to be the first week of the year.
1157 
	 * However, there is a European standard that defines the first week as the one with the majority
1158 
	 * of days (four or more) falling in the new year. This means that for years in which there are
1159 
	 * three days or less in the first week of January, the WEEKNUM function returns week numbers
1160 
	 * that are incorrect according to the European standard.
1161 
	 *
1162 
	 * Excel Function:
1163 
	 *		WEEKNUM(dateValue[,style])
1164 
	 *
1165 
	 * @param	mixed	$dateValue		Excel date serial value (float), PHP date timestamp (integer),
1166 
	 *									PHP DateTime object, or a standard date string
1167 
	 * @param	boolean	$method			Week begins on Sunday or Monday
1168 
	 *										1 or omitted	Week begins on Sunday.
1169 
	 *										2				Week begins on Monday.
1170 
	 * @return	int		Week Number
1171 
	 */
1172 
	public static function WEEKOFYEAR($dateValue = 1, $method = 1) {
1173 
		$dateValue	= PHPExcel_Calculation_Functions::flattenSingleValue($dateValue);
1174 
		$method		= PHPExcel_Calculation_Functions::flattenSingleValue($method);
1175 
 
1176 
		if (!is_numeric($method)) {
1177 
			return PHPExcel_Calculation_Functions::VALUE();
1178 
		} elseif (($method < 1) || ($method > 2)) {
1179 
			return PHPExcel_Calculation_Functions::NaN();
1180 
		}
1181 
		$method = floor($method);
1182 
 
1183 
		if (is_string($dateValue = self::_getDateValue($dateValue))) {
1184 
			return PHPExcel_Calculation_Functions::VALUE();
1185 
		} elseif ($dateValue < 0.0) {
1186 
			return PHPExcel_Calculation_Functions::NaN();
1187 
		}
1188 
 
1189 
		// Execute function
1190 
		$PHPDateObject = PHPExcel_Shared_Date::ExcelToPHPObject($dateValue);
1191 
		$dayOfYear = $PHPDateObject->format('z');
1192 
		$dow = $PHPDateObject->format('w');
1193 
		$PHPDateObject->modify('-'.$dayOfYear.' days');
1194 
		$dow = $PHPDateObject->format('w');
1195 
		$daysInFirstWeek = 7 - (($dow + (2 - $method)) % 7);
1196 
		$dayOfYear -= $daysInFirstWeek;
1197 
		$weekOfYear = ceil($dayOfYear / 7) + 1;
1198 
 
1199 
		return (int) $weekOfYear;
1200 
	}	//	function WEEKOFYEAR()
1201 
 
1202 
 
1203 
	/**
1204 
	 * MONTHOFYEAR
1205 
	 *
1206 
	 * Returns the month of a date represented by a serial number.
1207 
	 * The month is given as an integer, ranging from 1 (January) to 12 (December).
1208 
	 *
1209 
	 * Excel Function:
1210 
	 *		MONTH(dateValue)
1211 
	 *
1212 
	 * @param	mixed	$dateValue		Excel date serial value (float), PHP date timestamp (integer),
1213 
	 *									PHP DateTime object, or a standard date string
1214 
	 * @return	int		Month of the year
1215 
	 */
1216 
	public static function MONTHOFYEAR($dateValue = 1) {
1217 
		$dateValue	= PHPExcel_Calculation_Functions::flattenSingleValue($dateValue);
1218 
 
1219 
		if (is_string($dateValue = self::_getDateValue($dateValue))) {
1220 
			return PHPExcel_Calculation_Functions::VALUE();
1221 
		} elseif ($dateValue < 0.0) {
1222 
			return PHPExcel_Calculation_Functions::NaN();
1223 
		}
1224 
 
1225 
		// Execute function
1226 
		$PHPDateObject = PHPExcel_Shared_Date::ExcelToPHPObject($dateValue);
1227 
 
1228 
		return (int) $PHPDateObject->format('n');
1229 
	}	//	function MONTHOFYEAR()
1230 
 
1231 
 
1232 
	/**
1233 
	 * YEAR
1234 
	 *
1235 
	 * Returns the year corresponding to a date.
1236 
	 * The year is returned as an integer in the range 1900-9999.
1237 
	 *
1238 
	 * Excel Function:
1239 
	 *		YEAR(dateValue)
1240 
	 *
1241 
	 * @param	mixed	$dateValue		Excel date serial value (float), PHP date timestamp (integer),
1242 
	 *									PHP DateTime object, or a standard date string
1243 
	 * @return	int		Year
1244 
	 */
1245 
	public static function YEAR($dateValue = 1) {
1246 
		$dateValue	= PHPExcel_Calculation_Functions::flattenSingleValue($dateValue);
1247 
 
1248 
		if (is_string($dateValue = self::_getDateValue($dateValue))) {
1249 
			return PHPExcel_Calculation_Functions::VALUE();
1250 
		} elseif ($dateValue < 0.0) {
1251 
			return PHPExcel_Calculation_Functions::NaN();
1252 
		}
1253 
 
1254 
		// Execute function
1255 
		$PHPDateObject = PHPExcel_Shared_Date::ExcelToPHPObject($dateValue);
1256 
 
1257 
		return (int) $PHPDateObject->format('Y');
1258 
	}	//	function YEAR()
1259 
 
1260 
 
1261 
	/**
1262 
	 * HOUROFDAY
1263 
	 *
1264 
	 * Returns the hour of a time value.
1265 
	 * The hour is given as an integer, ranging from 0 (12:00 A.M.) to 23 (11:00 P.M.).
1266 
	 *
1267 
	 * Excel Function:
1268 
	 *		HOUR(timeValue)
1269 
	 *
1270 
	 * @param	mixed	$timeValue		Excel date serial value (float), PHP date timestamp (integer),
1271 
	 *									PHP DateTime object, or a standard time string
1272 
	 * @return	int		Hour
1273 
	 */
1274 
	public static function HOUROFDAY($timeValue = 0) {
1275 
		$timeValue	= PHPExcel_Calculation_Functions::flattenSingleValue($timeValue);
1276 
 
1277 
		if (!is_numeric($timeValue)) {
1278 
			if (PHPExcel_Calculation_Functions::getCompatibilityMode() == PHPExcel_Calculation_Functions::COMPATIBILITY_GNUMERIC) {
1279 
				$testVal = strtok($timeValue,'/-: ');
1280 
				if (strlen($testVal) < strlen($timeValue)) {
1281 
					return PHPExcel_Calculation_Functions::VALUE();
1282 
				}
1283 
			}
1284 
			$timeValue = self::_getTimeValue($timeValue);
1285 
			if (is_string($timeValue)) {
1286 
				return PHPExcel_Calculation_Functions::VALUE();
1287 
			}
1288 
		}
1289 
		// Execute function
1290 
		if ($timeValue >= 1) {
1291 
			$timeValue = fmod($timeValue,1);
1292 
		} elseif ($timeValue < 0.0) {
1293 
			return PHPExcel_Calculation_Functions::NaN();
1294 
		}
1295 
		$timeValue = PHPExcel_Shared_Date::ExcelToPHP($timeValue);
1296 
 
1297 
		return (int) gmdate('G',$timeValue);
1298 
	}	//	function HOUROFDAY()
1299 
 
1300 
 
1301 
	/**
1302 
	 * MINUTEOFHOUR
1303 
	 *
1304 
	 * Returns the minutes of a time value.
1305 
	 * The minute is given as an integer, ranging from 0 to 59.
1306 
	 *
1307 
	 * Excel Function:
1308 
	 *		MINUTE(timeValue)
1309 
	 *
1310 
	 * @param	mixed	$timeValue		Excel date serial value (float), PHP date timestamp (integer),
1311 
	 *									PHP DateTime object, or a standard time string
1312 
	 * @return	int		Minute
1313 
	 */
1314 
	public static function MINUTEOFHOUR($timeValue = 0) {
1315 
		$timeValue = $timeTester	= PHPExcel_Calculation_Functions::flattenSingleValue($timeValue);
1316 
 
1317 
		if (!is_numeric($timeValue)) {
1318 
			if (PHPExcel_Calculation_Functions::getCompatibilityMode() == PHPExcel_Calculation_Functions::COMPATIBILITY_GNUMERIC) {
1319 
				$testVal = strtok($timeValue,'/-: ');
1320 
				if (strlen($testVal) < strlen($timeValue)) {
1321 
					return PHPExcel_Calculation_Functions::VALUE();
1322 
				}
1323 
			}
1324 
			$timeValue = self::_getTimeValue($timeValue);
1325 
			if (is_string($timeValue)) {
1326 
				return PHPExcel_Calculation_Functions::VALUE();
1327 
			}
1328 
		}
1329 
		// Execute function
1330 
		if ($timeValue >= 1) {
1331 
			$timeValue = fmod($timeValue,1);
1332 
		} elseif ($timeValue < 0.0) {
1333 
			return PHPExcel_Calculation_Functions::NaN();
1334 
		}
1335 
		$timeValue = PHPExcel_Shared_Date::ExcelToPHP($timeValue);
1336 
 
1337 
		return (int) gmdate('i',$timeValue);
1338 
	}	//	function MINUTEOFHOUR()
1339 
 
1340 
 
1341 
	/**
1342 
	 * SECONDOFMINUTE
1343 
	 *
1344 
	 * Returns the seconds of a time value.
1345 
	 * The second is given as an integer in the range 0 (zero) to 59.
1346 
	 *
1347 
	 * Excel Function:
1348 
	 *		SECOND(timeValue)
1349 
	 *
1350 
	 * @param	mixed	$timeValue		Excel date serial value (float), PHP date timestamp (integer),
1351 
	 *									PHP DateTime object, or a standard time string
1352 
	 * @return	int		Second
1353 
	 */
1354 
	public static function SECONDOFMINUTE($timeValue = 0) {
1355 
		$timeValue	= PHPExcel_Calculation_Functions::flattenSingleValue($timeValue);
1356 
 
1357 
		if (!is_numeric($timeValue)) {
1358 
			if (PHPExcel_Calculation_Functions::getCompatibilityMode() == PHPExcel_Calculation_Functions::COMPATIBILITY_GNUMERIC) {
1359 
				$testVal = strtok($timeValue,'/-: ');
1360 
				if (strlen($testVal) < strlen($timeValue)) {
1361 
					return PHPExcel_Calculation_Functions::VALUE();
1362 
				}
1363 
			}
1364 
			$timeValue = self::_getTimeValue($timeValue);
1365 
			if (is_string($timeValue)) {
1366 
				return PHPExcel_Calculation_Functions::VALUE();
1367 
			}
1368 
		}
1369 
		// Execute function
1370 
		if ($timeValue >= 1) {
1371 
			$timeValue = fmod($timeValue,1);
1372 
		} elseif ($timeValue < 0.0) {
1373 
			return PHPExcel_Calculation_Functions::NaN();
1374 
		}
1375 
		$timeValue = PHPExcel_Shared_Date::ExcelToPHP($timeValue);
1376 
 
1377 
		return (int) gmdate('s',$timeValue);
1378 
	}	//	function SECONDOFMINUTE()
1379 
 
1380 
 
1381 
	/**
1382 
	 * EDATE
1383 
	 *
1384 
	 * Returns the serial number that represents the date that is the indicated number of months
1385 
	 * before or after a specified date (the start_date).
1386 
	 * Use EDATE to calculate maturity dates or due dates that fall on the same day of the month
1387 
	 * as the date of issue.
1388 
	 *
1389 
	 * Excel Function:
1390 
	 *		EDATE(dateValue,adjustmentMonths)
1391 
	 *
1392 
	 * @param	mixed	$dateValue			Excel date serial value (float), PHP date timestamp (integer),
1393 
	 *										PHP DateTime object, or a standard date string
1394 
	 * @param	int		$adjustmentMonths	The number of months before or after start_date.
1395 
	 *										A positive value for months yields a future date;
1396 
	 *										a negative value yields a past date.
1397 
	 * @return	mixed	Excel date/time serial value, PHP date/time serial value or PHP date/time object,
1398 
	 *						depending on the value of the ReturnDateType flag
1399 
	 */
1400 
	public static function EDATE($dateValue = 1, $adjustmentMonths = 0) {
1401 
		$dateValue			= PHPExcel_Calculation_Functions::flattenSingleValue($dateValue);
1402 
		$adjustmentMonths	= PHPExcel_Calculation_Functions::flattenSingleValue($adjustmentMonths);
1403 
 
1404 
		if (!is_numeric($adjustmentMonths)) {
1405 
			return PHPExcel_Calculation_Functions::VALUE();
1406 
		}
1407 
		$adjustmentMonths = floor($adjustmentMonths);
1408 
 
1409 
		if (is_string($dateValue = self::_getDateValue($dateValue))) {
1410 
			return PHPExcel_Calculation_Functions::VALUE();
1411 
		}
1412 
 
1413 
		// Execute function
1414 
		$PHPDateObject = self::_adjustDateByMonths($dateValue,$adjustmentMonths);
1415 
 
1416 
		switch (PHPExcel_Calculation_Functions::getReturnDateType()) {
1417 
			case PHPExcel_Calculation_Functions::RETURNDATE_EXCEL :
1418 
					return (float) PHPExcel_Shared_Date::PHPToExcel($PHPDateObject);
1419 
			case PHPExcel_Calculation_Functions::RETURNDATE_PHP_NUMERIC :
1420 
					return (integer) PHPExcel_Shared_Date::ExcelToPHP(PHPExcel_Shared_Date::PHPToExcel($PHPDateObject));
1421 
			case PHPExcel_Calculation_Functions::RETURNDATE_PHP_OBJECT :
1422 
					return $PHPDateObject;
1423 
		}
1424 
	}	//	function EDATE()
1425 
 
1426 
 
1427 
	/**
1428 
	 * EOMONTH
1429 
	 *
1430 
	 * Returns the date value for the last day of the month that is the indicated number of months
1431 
	 * before or after start_date.
1432 
	 * Use EOMONTH to calculate maturity dates or due dates that fall on the last day of the month.
1433 
	 *
1434 
	 * Excel Function:
1435 
	 *		EOMONTH(dateValue,adjustmentMonths)
1436 
	 *
1437 
	 * @param	mixed	$dateValue			Excel date serial value (float), PHP date timestamp (integer),
1438 
	 *										PHP DateTime object, or a standard date string
1439 
	 * @param	int		$adjustmentMonths	The number of months before or after start_date.
1440 
	 *										A positive value for months yields a future date;
1441 
	 *										a negative value yields a past date.
1442 
	 * @return	mixed	Excel date/time serial value, PHP date/time serial value or PHP date/time object,
1443 
	 *						depending on the value of the ReturnDateType flag
1444 
	 */
1445 
	public static function EOMONTH($dateValue = 1, $adjustmentMonths = 0) {
1446 
		$dateValue			= PHPExcel_Calculation_Functions::flattenSingleValue($dateValue);
1447 
		$adjustmentMonths	= PHPExcel_Calculation_Functions::flattenSingleValue($adjustmentMonths);
1448 
 
1449 
		if (!is_numeric($adjustmentMonths)) {
1450 
			return PHPExcel_Calculation_Functions::VALUE();
1451 
		}
1452 
		$adjustmentMonths = floor($adjustmentMonths);
1453 
 
1454 
		if (is_string($dateValue = self::_getDateValue($dateValue))) {
1455 
			return PHPExcel_Calculation_Functions::VALUE();
1456 
		}
1457 
 
1458 
		// Execute function
1459 
		$PHPDateObject = self::_adjustDateByMonths($dateValue,$adjustmentMonths+1);
1460 
		$adjustDays = (int) $PHPDateObject->format('d');
1461 
		$adjustDaysString = '-'.$adjustDays.' days';
1462 
		$PHPDateObject->modify($adjustDaysString);
1463 
 
1464 
		switch (PHPExcel_Calculation_Functions::getReturnDateType()) {
1465 
			case PHPExcel_Calculation_Functions::RETURNDATE_EXCEL :
1466 
					return (float) PHPExcel_Shared_Date::PHPToExcel($PHPDateObject);
1467 
			case PHPExcel_Calculation_Functions::RETURNDATE_PHP_NUMERIC :
1468 
					return (integer) PHPExcel_Shared_Date::ExcelToPHP(PHPExcel_Shared_Date::PHPToExcel($PHPDateObject));
1469 
			case PHPExcel_Calculation_Functions::RETURNDATE_PHP_OBJECT :
1470 
					return $PHPDateObject;
1471 
		}
1472 
	}	//	function EOMONTH()
1473 
 
1474 
}	//	class PHPExcel_Calculation_DateTime
1475