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<?php |
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namespace PhpOffice\PhpSpreadsheet\Calculation\DateTimeExcel; |
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use DateTimeImmutable; |
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use PhpOffice\PhpSpreadsheet\Calculation\Functions; |
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use PhpOffice\PhpSpreadsheet\Shared\Date as SharedDateHelper; |
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class DateValue |
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{ |
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/** |
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* DATEVALUE. |
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* |
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* Returns a value that represents a particular date. |
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* Use DATEVALUE to convert a date represented by a text string to an Excel or PHP date/time stamp |
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* value. |
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* |
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* NOTE: When used in a Cell Formula, MS Excel changes the cell format so that it matches the date |
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* format of your regional settings. PhpSpreadsheet does not change cell formatting in this way. |
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* |
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* Excel Function: |
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* DATEVALUE(dateValue) |
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* |
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* @param string $dateValue Text that represents a date in a Microsoft Excel date format. |
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* For example, "1/30/2008" or "30-Jan-2008" are text strings within |
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* quotation marks that represent dates. Using the default date |
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* system in Excel for Windows, date_text must represent a date from |
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* January 1, 1900, to December 31, 9999. Using the default date |
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* system in Excel for the Macintosh, date_text must represent a date |
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* from January 1, 1904, to December 31, 9999. DATEVALUE returns the |
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* #VALUE! error value if date_text is out of this range. |
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* |
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* @return mixed Excel date/time serial value, PHP date/time serial value or PHP date/time object, |
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* depending on the value of the ReturnDateType flag |
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*/ |
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public static function fromString($dateValue) |
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{ |
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$dti = new DateTimeImmutable(); |
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$baseYear = SharedDateHelper::getExcelCalendar(); |
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$dateValue = trim(Functions::flattenSingleValue($dateValue), '"'); |
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// Strip any ordinals because they're allowed in Excel (English only) |
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$dateValue = preg_replace('/(\d)(st|nd|rd|th)([ -\/])/Ui', '$1$3', $dateValue) ?? ''; |
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// Convert separators (/ . or space) to hyphens (should also handle dot used for ordinals in some countries, e.g. Denmark, Germany) |
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$dateValue = str_replace(['/', '.', '-', ' '], ' ', $dateValue); |
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$yearFound = false; |
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$t1 = explode(' ', $dateValue); |
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$t = ''; |
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foreach ($t1 as &$t) { |
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if ((is_numeric($t)) && ($t > 31)) { |
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if ($yearFound) { |
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return Functions::VALUE(); |
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} |
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if ($t < 100) { |
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$t += 1900; |
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} |
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$yearFound = true; |
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} |
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} |
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if (count($t1) === 1) { |
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// We've been fed a time value without any date |
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return ((strpos((string) $t, ':') === false)) ? Functions::Value() : 0.0; |
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} |
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unset($t); |
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$dateValue = self::t1ToString($t1, $dti, $yearFound); |
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$PHPDateArray = self::setUpArray($dateValue, $dti); |
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return self::finalResults($PHPDateArray, $dti, $baseYear); |
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} |
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private static function t1ToString(array $t1, DateTimeImmutable $dti, bool $yearFound): string |
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{ |
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if (count($t1) == 2) { |
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// We only have two parts of the date: either day/month or month/year |
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if ($yearFound) { |
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array_unshift($t1, 1); |
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} else { |
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if (is_numeric($t1[1]) && $t1[1] > 29) { |
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$t1[1] += 1900; |
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array_unshift($t1, 1); |
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} else { |
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$t1[] = $dti->format('Y'); |
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} |
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} |
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} |
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$dateValue = implode(' ', $t1); |
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return $dateValue; |
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} |
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/** |
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* Parse date. |
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* |
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* @return array|bool |
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*/ |
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private static function setUpArray(string $dateValue, DateTimeImmutable $dti) |
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{ |
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$PHPDateArray = date_parse($dateValue); |
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if (($PHPDateArray === false) || ($PHPDateArray['error_count'] > 0)) { |
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// If original count was 1, we've already returned. |
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// If it was 2, we added another. |
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// Therefore, neither of the first 2 stroks below can fail. |
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$testVal1 = strtok($dateValue, '- '); |
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$testVal2 = strtok('- '); |
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$testVal3 = strtok('- ') ?: $dti->format('Y'); |
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Helpers::adjustYear((string) $testVal1, (string) $testVal2, $testVal3); |
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$PHPDateArray = date_parse($testVal1 . '-' . $testVal2 . '-' . $testVal3); |
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if (($PHPDateArray === false) || ($PHPDateArray['error_count'] > 0)) { |
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$PHPDateArray = date_parse($testVal2 . '-' . $testVal1 . '-' . $testVal3); |
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} |
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} |
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return $PHPDateArray; |
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} |
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/** |
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* Final results. |
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* |
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* @param array|bool $PHPDateArray |
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* |
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* @return mixed Excel date/time serial value, PHP date/time serial value or PHP date/time object, |
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* depending on the value of the ReturnDateType flag |
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*/ |
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private static function finalResults($PHPDateArray, DateTimeImmutable $dti, int $baseYear) |
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{ |
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$retValue = Functions::Value(); |
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if (is_array($PHPDateArray) && $PHPDateArray['error_count'] == 0) { |
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// Execute function |
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Helpers::replaceIfEmpty($PHPDateArray['year'], $dti->format('Y')); |
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if ($PHPDateArray['year'] < $baseYear) { |
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return Functions::VALUE(); |
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} |
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Helpers::replaceIfEmpty($PHPDateArray['month'], $dti->format('m')); |
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Helpers::replaceIfEmpty($PHPDateArray['day'], $dti->format('d')); |
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$PHPDateArray['hour'] = 0; |
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$PHPDateArray['minute'] = 0; |
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$PHPDateArray['second'] = 0; |
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$month = (int) $PHPDateArray['month']; |
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$day = (int) $PHPDateArray['day']; |
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$year = (int) $PHPDateArray['year']; |
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if (!checkdate($month, $day, $year)) { |
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return ($year === 1900 && $month === 2 && $day === 29) ? Helpers::returnIn3FormatsFloat(60.0) : Functions::VALUE(); |
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} |
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$retValue = Helpers::returnIn3FormatsArray($PHPDateArray, true); |
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} |
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return $retValue; |
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} |
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} |
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PHPOffice /
PhpSpreadsheet
