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<?php /** * PHPExcel_Shared_Date * * Copyright (c) 2006 - 2015 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 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel) * @license http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt LGPL * @version ##VERSION##, ##DATE## */ 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 /* * Names of the months of the year, indexed by shortname * Planned usage for locale settings * * @public * @var string[] */ public static $monthNames = array( 'Jan' => 'January', 'Feb' => 'February', 'Mar' => 'March', 'Apr' => 'April', 'May' => 'May', 'Jun' => 'June', 'Jul' => 'July', 'Aug' => 'August', 'Sep' => 'September', 'Oct' => 'October', 'Nov' => 'November', 'Dec' => 'December', ); /* * Names of the months of the year, indexed by shortname * Planned usage for locale settings * * @public * @var string[] */ public static $numberSuffixes = array( 'st', 'nd', 'rd', 'th', ); /* * Base calendar year to use for calculations * * @private * @var int */ protected static $excelBaseDate = self::CALENDAR_WINDOWS_1900; /** * Set the Excel calendar (Windows 1900 or Mac 1904) * * @param integer $baseDate Excel base date (1900 or 1904) * @return boolean Success or failure */ public static function setExcelCalendar($baseDate) { if (($baseDate == self::CALENDAR_WINDOWS_1900) || ($baseDate == self::CALENDAR_MAC_1904)) { self::$excelBaseDate = $baseDate; return true; } return false; } /** * Return the Excel calendar (Windows 1900 or Mac 1904) * * @return integer Excel base date (1900 or 1904) */ public static function getExcelCalendar() { return self::$excelBaseDate; } /** * Convert a date from Excel to PHP * * @param integer $dateValue Excel date/time value * @param boolean $adjustToTimezone Flag indicating whether $dateValue should be treated as * a UST timestamp, or adjusted to UST * @param string $timezone The timezone for finding the adjustment from UST * @return integer PHP serialized date/time */ public static function ExcelToPHP($dateValue = 0, $adjustToTimezone = false, $timezone = null) { if (self::$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 * 86400); if (($returnValue <= PHP_INT_MAX) && ($returnValue >= -PHP_INT_MAX)) { $returnValue = (integer) $returnValue; } } else { $hours = round($dateValue * 24); $mins = round($dateValue * 1440) - round($hours * 60); $secs = round($dateValue * 86400) - round($hours * 3600) - round($mins * 60); $returnValue = (integer) gmmktime($hours, $mins, $secs); } $timezoneAdjustment = ($adjustToTimezone) ? PHPExcel_Shared_TimeZone::getTimezoneAdjustment($timezone, $returnValue) : 0; return $returnValue + $timezoneAdjustment; } /** * Convert a date from Excel to a PHP Date/Time object * * @param integer $dateValue Excel date/time value * @return DateTime PHP date/time object */ public static function ExcelToPHPObject($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; } /** * Convert a date from PHP to Excel * * @param mixed $dateValue PHP serialized date/time or date object * @param boolean $adjustToTimezone Flag indicating whether $dateValue should be treated as * a UST timestamp, or adjusted to UST * @param string $timezone The timezone for finding the adjustment from UST * @return mixed Excel date/time value * or boolean FALSE on failure */ public static function PHPToExcel($dateValue = 0, $adjustToTimezone = false, $timezone = null) { $saveTimeZone = date_default_timezone_get(); date_default_timezone_set('UTC'); $timezoneAdjustment = ($adjustToTimezone) ? PHPExcel_Shared_TimeZone::getTimezoneAdjustment($timezone ? $timezone : $saveTimeZone, $dateValue) : 0; $retValue = false; if ((is_object($dateValue)) && ($dateValue instanceof DateTime)) { $dateValue->add(new DateInterval('PT' . $timezoneAdjustment . 'S')); $retValue = self::FormattedPHPToExcel($dateValue->format('Y'), $dateValue->format('m'), $dateValue->format('d'), $dateValue->format('H'), $dateValue->format('i'), $dateValue->format('s')); } elseif (is_numeric($dateValue)) { $dateValue += $timezoneAdjustment; $retValue = self::FormattedPHPToExcel(date('Y', $dateValue), date('m', $dateValue), date('d', $dateValue), date('H', $dateValue), date('i', $dateValue), date('s', $dateValue)); } elseif (is_string($dateValue)) { $retValue = self::stringToExcel($dateValue); } date_default_timezone_set($saveTimeZone); return $retValue; } /** * FormattedPHPToExcel * * @param integer $year * @param integer $month * @param integer $day * @param integer $hours * @param integer $minutes * @param integer $seconds * @return integer Excel date/time value */ public static function FormattedPHPToExcel($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 -= 3; } else { $month += 9; --$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; } /** * Is a given cell a date/time? * * @param PHPExcel_Cell $pCell * @return boolean */ public static function isDateTime(PHPExcel_Cell $pCell) { return self::isDateTimeFormat( $pCell->getWorksheet()->getStyle( $pCell->getCoordinate() )->getNumberFormat() ); } /** * 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()); } private static $possibleDateFormatCharacters = 'eymdHs'; /** * Is a given number format code a date/time? * * @param string $pFormatCode * @return boolean */ public static function isDateTimeFormatCode($pFormatCode = '') { if (strtolower($pFormatCode) === strtolower(PHPExcel_Style_NumberFormat::FORMAT_GENERAL)) { // "General" contains an epoch letter 'e', so we trap for it explicitly here (case-insensitive check) return false; } if (preg_match('/[0#]E[+-]0/i', $pFormatCode)) { // Scientific format return false; } // Switch on formatcode switch ($pFormatCode) { // Explicitly defined date formats 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; } // Typically number, currency or accounting (or occasionally fraction) formats if ((substr($pFormatCode, 0, 1) == '_') || (substr($pFormatCode, 0, 2) == '0 ')) { return false; } // Try checking for any of the date formatting characters that don't appear within square braces if (preg_match('/(^|\])[^\[]*['.self::$possibleDateFormatCharacters.']/i', $pFormatCode)) { // We might also have a format mask containing quoted strings... // we don't want to test for any of our characters within the quoted blocks if (strpos($pFormatCode, '"') !== false) { $segMatcher = false; foreach (explode('"', $pFormatCode) as $subVal) { // Only test in alternate array entries (the non-quoted blocks) if (($segMatcher = !$segMatcher) && (preg_match('/(^|\])[^\[]*['.self::$possibleDateFormatCharacters.']/i', $subVal))) { return true; } } return false; } return true; } // No date... return false; } /** * Convert a date/time string to Excel time * * @param string $dateValue Examples: '2009-12-31', '2009-12-31 15:59', '2009-12-31 15:59:10' * @return float|FALSE Excel date/time serial value */ public static function stringToExcel($dateValue = '') { if (strlen($dateValue) < 2) { return false; } if (!preg_match('/^(\d{1,4}[ \.\/\-][A-Z]{3,9}([ \.\/\-]\d{1,4})?|[A-Z]{3,9}[ \.\/\-]\d{1,4}([ \.\/\-]\d{1,4})?|\d{1,4}[ \.\/\-]\d{1,4}([ \.\/\-]\d{1,4})?)( \d{1,2}:\d{1,2}(:\d{1,2})?)?$/iu', $dateValue)) { return false; } $dateValueNew = PHPExcel_Calculation_DateTime::DATEVALUE($dateValue); if ($dateValueNew === PHPExcel_Calculation_Functions::VALUE()) { return false; } if (strpos($dateValue, ':') !== false) { $timeValue = PHPExcel_Calculation_DateTime::TIMEVALUE($dateValue); if ($timeValue === PHPExcel_Calculation_Functions::VALUE()) { return false; } $dateValueNew += $timeValue; } return $dateValueNew; } /** * Converts a month name (either a long or a short name) to a month number * * @param string $month Month name or abbreviation * @return integer|string Month number (1 - 12), or the original string argument if it isn't a valid month name */ public static function monthStringToNumber($month) { $monthIndex = 1; foreach (self::$monthNames as $shortMonthName => $longMonthName) { if (($month === $longMonthName) || ($month === $shortMonthName)) { return $monthIndex; } ++$monthIndex; } return $month; } /** * Strips an ordinal froma numeric value * * @param string $day Day number with an ordinal * @return integer|string The integer value with any ordinal stripped, or the original string argument if it isn't a valid numeric */ public static function dayStringToNumber($day) { $strippedDayValue = (str_replace(self::$numberSuffixes, '', $day)); if (is_numeric($strippedDayValue)) { return (integer) $strippedDayValue; } return $day; } }
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