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Directory >> /var/www/html/back/vendor/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Calculation/DateTimeExcel/

File / Folder	Size	Action
.	-
Constants.php	1.077KB	edt ren
Current.php	2.216KB	edt ren
Date.php	7.305KB	edt ren
DateParts.php	5.083KB	edt ren
DateValue.php	6.673KB	edt ren
Days.php	2.208KB	edt ren
Days360.php	5.161KB	edt ren
Difference.php	5.96KB	edt ren
Helpers.php	9.075KB	edt ren
Month.php	4.487KB	edt ren
NetworkDays.php	4.188KB	edt ren
Time.php	5.011KB	edt ren
TimeParts.php	4.356KB	edt ren
TimeValue.php	4.229KB	edt ren
Week.php	10.061KB	edt ren
WorkDay.php	7.222KB	edt ren
YearFrac.php	5.695KB	edt ren

<?php

namespace PhpOffice\PhpSpreadsheet\Calculation\DateTimeExcel;

use DateInterval;
use DateTime;
use PhpOffice\PhpSpreadsheet\Calculation\ArrayEnabled;
use PhpOffice\PhpSpreadsheet\Calculation\Exception;
use PhpOffice\PhpSpreadsheet\Calculation\Information\ExcelError;
use PhpOffice\PhpSpreadsheet\Shared\Date as SharedDateHelper;

class Difference
{
    use ArrayEnabled;

/**
     * DATEDIF.
     *
     * @param mixed $startDate Excel date serial value, PHP date/time stamp, PHP DateTime object
     *                                    or a standard date string
     *                         Or can be an array of date values
     * @param mixed $endDate Excel date serial value, PHP date/time stamp, PHP DateTime object
     *                                    or a standard date string
     *                         Or can be an array of date values
     * @param array|string $unit
     *                         Or can be an array of unit values
     *
     * @return array|int|string Interval between the dates
     *         If an array of values is passed for the $startDate or $endDays,arguments, then the returned result
     *            will also be an array with matching dimensions
     */
    public static function interval($startDate, $endDate, $unit = 'D')
    {
        if (is_array($startDate) || is_array($endDate) || is_array($unit)) {
            return self::evaluateArrayArguments([self::class, __FUNCTION__], $startDate, $endDate, $unit);
        }

try {
            $startDate = Helpers::getDateValue($startDate);
            $endDate = Helpers::getDateValue($endDate);
            $difference = self::initialDiff($startDate, $endDate);
            $unit = strtoupper($unit);
        } catch (Exception $e) {
            return $e->getMessage();
        }

// Execute function
        $PHPStartDateObject = SharedDateHelper::excelToDateTimeObject($startDate);
        $startDays = (int) $PHPStartDateObject->format('j');
        //$startMonths = (int) $PHPStartDateObject->format('n');
        $startYears = (int) $PHPStartDateObject->format('Y');

$PHPEndDateObject = SharedDateHelper::excelToDateTimeObject($endDate);
        $endDays = (int) $PHPEndDateObject->format('j');
        //$endMonths = (int) $PHPEndDateObject->format('n');
        $endYears = (int) $PHPEndDateObject->format('Y');

$PHPDiffDateObject = $PHPEndDateObject->diff($PHPStartDateObject);

$retVal = false;
        $retVal = self::replaceRetValue($retVal, $unit, 'D') ?? self::datedifD($difference);
        $retVal = self::replaceRetValue($retVal, $unit, 'M') ?? self::datedifM($PHPDiffDateObject);
        $retVal = self::replaceRetValue($retVal, $unit, 'MD') ?? self::datedifMD($startDays, $endDays, $PHPEndDateObject, $PHPDiffDateObject);
        $retVal = self::replaceRetValue($retVal, $unit, 'Y') ?? self::datedifY($PHPDiffDateObject);
        $retVal = self::replaceRetValue($retVal, $unit, 'YD') ?? self::datedifYD($difference, $startYears, $endYears, $PHPStartDateObject, $PHPEndDateObject);
        $retVal = self::replaceRetValue($retVal, $unit, 'YM') ?? self::datedifYM($PHPDiffDateObject);

return is_bool($retVal) ? ExcelError::VALUE() : $retVal;
    }

private static function initialDiff(float $startDate, float $endDate): float
    {
        // Validate parameters
        if ($startDate > $endDate) {
            throw new Exception(ExcelError::NAN());
        }

return $endDate - $startDate;
    }

/**
     * Decide whether it's time to set retVal.
     *
     * @param bool|int $retVal
     *
     * @return null|bool|int
     */
    private static function replaceRetValue($retVal, string $unit, string $compare)
    {
        if ($retVal !== false || $unit !== $compare) {
            return $retVal;
        }

return null;
    }

private static function datedifD(float $difference): int
    {
        return (int) $difference;
    }

private static function datedifM(DateInterval $PHPDiffDateObject): int
    {
        return 12 * (int) $PHPDiffDateObject->format('%y') + (int) $PHPDiffDateObject->format('%m');
    }

private static function datedifMD(int $startDays, int $endDays, DateTime $PHPEndDateObject, DateInterval $PHPDiffDateObject): int
    {
        if ($endDays < $startDays) {
            $retVal = $endDays;
            $PHPEndDateObject->modify('-' . $endDays . ' days');
            $adjustDays = (int) $PHPEndDateObject->format('j');
            $retVal += ($adjustDays - $startDays);
        } else {
            $retVal = (int) $PHPDiffDateObject->format('%d');
        }

return $retVal;
    }

private static function datedifY(DateInterval $PHPDiffDateObject): int
    {
        return (int) $PHPDiffDateObject->format('%y');
    }

private static function datedifYD(float $difference, int $startYears, int $endYears, DateTime $PHPStartDateObject, DateTime $PHPEndDateObject): int
    {
        $retVal = (int) $difference;
        if ($endYears > $startYears) {
            $isLeapStartYear = $PHPStartDateObject->format('L');
            $wasLeapEndYear = $PHPEndDateObject->format('L');

// Adjust end year to be as close as possible as start year
            while ($PHPEndDateObject >= $PHPStartDateObject) {
                $PHPEndDateObject->modify('-1 year');
                //$endYears = $PHPEndDateObject->format('Y');
            }
            $PHPEndDateObject->modify('+1 year');

// Get the result
            $retVal = (int) $PHPEndDateObject->diff($PHPStartDateObject)->days;

// Adjust for leap years cases
            $isLeapEndYear = $PHPEndDateObject->format('L');
            $limit = new DateTime($PHPEndDateObject->format('Y-02-29'));
            if (!$isLeapStartYear && !$wasLeapEndYear && $isLeapEndYear && $PHPEndDateObject >= $limit) {
                --$retVal;
            }
        }

return (int) $retVal;
    }

private static function datedifYM(DateInterval $PHPDiffDateObject): int
    {
        return (int) $PHPDiffDateObject->format('%m');
    }
}