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<?php
use PhpOffice\PhpSpreadsheet\Spreadsheet;
require __DIR__ . '/../../Header.php';
$helper->log('Converts a date in the form of text to a serial number.');
// Create new PhpSpreadsheet object
$spreadsheet = new Spreadsheet();
$worksheet = $spreadsheet->getActiveSheet();
// Add some data
$testDates = ['26 March 2012', '29 Feb 2012', 'April 1, 2012', '25/12/2012',
'2012-Oct-31', '5th November', 'January 1st', 'April 2012',
'17-03', '03-2012', '29 Feb 2011', '03-05-07',
'03-MAY-07', '03-13-07',
];
$testDateCount = count($testDates);
for ($row = 1; $row <= $testDateCount; ++$row) {
$worksheet->setCellValue('A' . $row, $testDates[$row - 1]);
$worksheet->setCellValue('B' . $row, '=DATEVALUE(A' . $row . ')');
$worksheet->setCellValue('C' . $row, '=B' . $row);
}
$worksheet->getStyle('C1:C' . $testDateCount)
->getNumberFormat()
->setFormatCode('yyyy-mmm-dd');
// Test the formulae
$helper->log('<strong>Warning: </strong>The PhpSpreadsheet DATEVALUE() function accepts a wider range of date formats than MS Excel DATEFORMAT() function.');
for ($row = 1; $row <= $testDateCount; ++$row) {
$helper->log('Date String: ' . $worksheet->getCell('A' . $row)->getFormattedValue());
$helper->log('Formula: ' . $worksheet->getCell('B' . $row)->getValue());
$helper->log('Excel DateStamp: ' . $worksheet->getCell('B' . $row)->getFormattedValue());
$helper->log('Formatted DateStamp' . $worksheet->getCell('C' . $row)->getFormattedValue());
$helper->log('');
}