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<?php
namespace PhpOffice\PhpSpreadsheet\Calculation\DateTimeExcel;
use DateTimeInterface;
use PhpOffice\PhpSpreadsheet\Calculation\ArrayEnabled;
use PhpOffice\PhpSpreadsheet\Calculation\Exception;
use PhpOffice\PhpSpreadsheet\Calculation\Information\ExcelError;
use PhpOffice\PhpSpreadsheet\Shared\Date as SharedDateHelper;
class Days
{
use ArrayEnabled;
/**
* DAYS.
*
* Returns the number of days between two dates
*
* Excel Function:
* DAYS(endDate, startDate)
*
* @param array|DateTimeInterface|float|int|string $endDate Excel date serial value (float),
* PHP date timestamp (integer), PHP DateTime object, or a standard date string
* Or can be an array of date values
* @param array|DateTimeInterface|float|int|string $startDate Excel date serial value (float),
* PHP date timestamp (integer), PHP DateTime object, or a standard date string
* Or can be an array of date values
*
* @return array|int|string Number of days between start date and end date or an error
* If an array of values is passed for the $startDate or $endDays,arguments, then the returned result
* will also be an array with matching dimensions
*/
public static function between($endDate, $startDate)
{
if (is_array($endDate) || is_array($startDate)) {
return self::evaluateArrayArguments([self::class, __FUNCTION__], $endDate, $startDate);
}
try {
$startDate = Helpers::getDateValue($startDate);
$endDate = Helpers::getDateValue($endDate);
} catch (Exception $e) {
return $e->getMessage();
}
// Execute function
$PHPStartDateObject = SharedDateHelper::excelToDateTimeObject($startDate);
$PHPEndDateObject = SharedDateHelper::excelToDateTimeObject($endDate);
$days = ExcelError::VALUE();
$diff = $PHPStartDateObject->diff($PHPEndDateObject);
if ($diff !== false && !is_bool($diff->days)) {
$days = $diff->days;
if ($diff->invert) {
$days = -$days;
}
}
return $days;
}
}
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