PHPExcel_Shared

# Source for file Date.php Documentation is available at Date.php <?php /** * PHPExcel * * Copyright (c) 2006 - 2010 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_Shared * @copyright Copyright (c) 2006 - 2010 PHPExcel (http://www.codeplex.com/PHPExcel) * @license http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt LGPL * @version 1.7.2, 2010-01-11 */ /** PHPExcel root directory */ if (!defined('PHPEXCEL_ROOT')) { /** * @ignore */ define('PHPEXCEL_ROOT', dirname(__FILE__) . '/../../'); } /** PHPExcel_Cell */ require_once PHPEXCEL_ROOT . 'PHPExcel/Cell.php'; /** PHPExcel_Style_NumberFormat */ require_once PHPEXCEL_ROOT . 'PHPExcel/Style/NumberFormat.php'; /** * PHPExcel_Shared_Date * * @category PHPExcel * @package PHPExcel_Shared * @copyright Copyright (c) 2006 - 2010 PHPExcel (http://www.codeplex.com/PHPExcel) */ class PHPExcel_Shared_Date { /** constants */ const CALENDAR_WINDOWS_1900 = 1900; // Base date of 1st Jan 1900 = 1.0 const CALENDAR_MAC_1904 = 1904; // Base date of 2nd Jan 1904 = 1.0 private static $ExcelBaseDate = self::CALENDAR_WINDOWS_1900; public static $dateTimeObjectType = 'DateTime'; /** * Set the Excel calendar (Windows 1900 or Mac 1904) * * @param integer $baseDate Excel base date * @return boolean Success or failure */ public static function setExcelCalendar($baseDate) { if (($baseDate == self::CALENDAR_WINDOWS_1900) || ($baseDate == self::CALENDAR_MAC_1904)) { self::$ExcelBaseDate = $baseDate; return True; } return False; } // function setExcelCalendar() /** * Return the Excel calendar (Windows 1900 or Mac 1904) * * @return integer $baseDate Excel base date */ public static function getExcelCalendar() { return self::$ExcelBaseDate; } // function getExcelCalendar() /** * Convert a date from Excel to PHP * * @param long $dateValue Excel date/time value * @return long PHP serialized date/time */ public static function ExcelToPHP($dateValue = 0) { if (self::$ExcelBaseDate == self::CALENDAR_WINDOWS_1900) { $myExcelBaseDate = 25569; // Adjust for the spurious 29-Feb-1900 (Day 60) if ($dateValue < 60) { --$myExcelBaseDate; } } else { $myExcelBaseDate = 24107; } // Perform conversion if ($dateValue >= 1) { $utcDays = $dateValue - $myExcelBaseDate; $returnValue = round($utcDays * 24 * 60 * 60); if (($returnValue <= PHP_INT_MAX) && ($returnValue >= -PHP_INT_MAX)) { $returnValue = (integer) $returnValue; } } else { $hours = round($dateValue * 24); $mins = round($dateValue * 24 * 60) - round($hours * 60); $secs = round($dateValue * 24 * 60 * 60) - round($hours * 60 * 60) - round($mins * 60); $returnValue = (integer) gmmktime($hours, $mins, $secs); } // Return return $returnValue; } // function ExcelToPHP() /** * Convert a date from Excel to a PHP Date/Time object * * @param long $dateValue Excel date/time value * @return long PHP date/time object */ public static function ExcelToPHPObject($dateValue = 0) { $dateTime = self::ExcelToPHP($dateValue); $days = floor($dateTime / 86400); $time = round((($dateTime / 86400) - $days) * 86400); $hours = round($time / 3600); $minutes = round($time / 60) - ($hours * 60); $seconds = round($time) - ($hours * 3600) - ($minutes * 60); $dateObj = date_create('1-Jan-1970+'.$days.' days'); $dateObj->setTime($hours,$minutes,$seconds); return $dateObj; } // function ExcelToPHPObject() /** * Convert a date from PHP to Excel * * @param mixed $dateValue PHP serialized date/time or date object * @return mixed Excel date/time value * or boolean False on failure */ public static function PHPToExcel($dateValue = 0) { $saveTimeZone = date_default_timezone_get(); date_default_timezone_set('UTC'); $retValue = False; if ((is_object($dateValue)) && ($dateValue instanceof self::$dateTimeObjectType)) { $retValue = self::FormattedPHPToExcel( $dateValue->format('Y'), $dateValue->format('m'), $dateValue->format('d'), $dateValue->format('H'), $dateValue->format('i'), $dateValue->format('s') ); } elseif (is_numeric($dateValue)) { $retValue = self::FormattedPHPToExcel( date('Y',$dateValue), date('m',$dateValue), date('d',$dateValue), date('H',$dateValue), date('i',$dateValue), date('s',$dateValue) ); } date_default_timezone_set($saveTimeZone); return $retValue; } // function PHPToExcel() /** * FormattedPHPToExcel * * @param long $year * @param long $month * @param long $day * @param long $hours * @param long $minutes * @param long $seconds * @return long Excel date/time value */ public static function FormattedPHPToExcel($year, $month, $day, $hours=0, $minutes=0, $seconds=0) { if (self::$ExcelBaseDate == self::CALENDAR_WINDOWS_1900) { // // Fudge factor for the erroneous fact that the year 1900 is treated as a Leap Year in MS Excel // This affects every date following 28th February 1900 // $excel1900isLeapYear = True; if (($year == 1900) && ($month <= 2)) { $excel1900isLeapYear = False; } $myExcelBaseDate = 2415020; } else { $myExcelBaseDate = 2416481; $excel1900isLeapYear = False; } // Julian base date Adjustment if ($month > 2) { $month = $month - 3; } else { $month = $month + 9; --$year; } // Calculate the Julian Date, then subtract the Excel base date (JD 2415020 = 31-Dec-1899 Giving Excel Date of 0) $century = substr($year,0,2); $decade = substr($year,2,2); $excelDate = floor((146097 * $century) / 4) + floor((1461 * $decade) / 4) + floor((153 * $month + 2) / 5) + $day + 1721119 - $myExcelBaseDate + $excel1900isLeapYear; $excelTime = (($hours * 3600) + ($minutes * 60) + $seconds) / 86400; return (float) $excelDate + $excelTime; } // function FormattedPHPToExcel() /** * Is a given cell a date/time? * * @param PHPExcel_Cell $pCell * @return boolean */ public static function isDateTime(PHPExcel_Cell $pCell) { return self::isDateTimeFormat($pCell->getParent()->getStyle($pCell->getCoordinate())->getNumberFormat()); } // function isDateTime() /** * Is a given number format a date/time? * * @param PHPExcel_Style_NumberFormat $pFormat * @return boolean */ public static function isDateTimeFormat(PHPExcel_Style_NumberFormat $pFormat) { return self::isDateTimeFormatCode($pFormat->getFormatCode()); } // function isDateTimeFormat() private static $possibleDateFormatCharacters = 'ymdHis'; /** * Is a given number format code a date/time? * * @param string $pFormatCode * @return boolean */ public static function isDateTimeFormatCode($pFormatCode = '') { // Switch on formatcode switch ($pFormatCode) { case PHPExcel_Style_NumberFormat::FORMAT_DATE_YYYYMMDD: case PHPExcel_Style_NumberFormat::FORMAT_DATE_YYYYMMDD2: case PHPExcel_Style_NumberFormat::FORMAT_DATE_DDMMYYYY: case PHPExcel_Style_NumberFormat::FORMAT_DATE_DMYSLASH: case PHPExcel_Style_NumberFormat::FORMAT_DATE_DMYMINUS: case PHPExcel_Style_NumberFormat::FORMAT_DATE_DMMINUS: case PHPExcel_Style_NumberFormat::FORMAT_DATE_MYMINUS: case PHPExcel_Style_NumberFormat::FORMAT_DATE_DATETIME: case PHPExcel_Style_NumberFormat::FORMAT_DATE_TIME1: case PHPExcel_Style_NumberFormat::FORMAT_DATE_TIME2: case PHPExcel_Style_NumberFormat::FORMAT_DATE_TIME3: case PHPExcel_Style_NumberFormat::FORMAT_DATE_TIME4: case PHPExcel_Style_NumberFormat::FORMAT_DATE_TIME5: case PHPExcel_Style_NumberFormat::FORMAT_DATE_TIME6: case PHPExcel_Style_NumberFormat::FORMAT_DATE_TIME7: case PHPExcel_Style_NumberFormat::FORMAT_DATE_TIME8: case PHPExcel_Style_NumberFormat::FORMAT_DATE_YYYYMMDDSLASH: case PHPExcel_Style_NumberFormat::FORMAT_DATE_XLSX14: case PHPExcel_Style_NumberFormat::FORMAT_DATE_XLSX15: case PHPExcel_Style_NumberFormat::FORMAT_DATE_XLSX16: case PHPExcel_Style_NumberFormat::FORMAT_DATE_XLSX17: case PHPExcel_Style_NumberFormat::FORMAT_DATE_XLSX22: return true; } // Try checking for any of the date formatting characters that don't appear within square braces if (preg_match('/(^|\])[^\[]*['.self::$possibleDateFormatCharacters.']/i',$pFormatCode)) { return true; } // No date... return false; } // function isDateTimeFormatCode() } Documentation generated on Mon, 11 Jan 2010 08:07:41 +0100 by phpDocumentor 1.4.1