<?php error_reporting(E_ALL); set_time_limit(0); date_default_timezone_set('Europe/London'); ?> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> <title>PHPExcel Calculation Examples</title> </head> <body> <h1>DATEVALUE</h1> <h2>Converts a date in the form of text to a serial number.</h2> <?php /** Include path **/ set_include_path(get_include_path() . PATH_SEPARATOR . '../../../../Classes/'); /** Include PHPExcel */ include 'PHPExcel.php'; // Create new PHPExcel object $objPHPExcel = new PHPExcel(); $worksheet = $objPHPExcel->getActiveSheet(); // Add some data $testDates = array( '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'); echo '<hr />'; // Test the formulae ?> <p><strong>Warning: </strong>The PHPExcel DATEVALUE() function accepts a wider range of date formats than MS Excel's DATEFORMAT() function.</p> <table border="1" cellspacing="0"> <tr> <th>Date String</th> <th>Formula</th> <th>Excel DateStamp</th> <th>Formatted DateStamp</th> </tr> <?php for ($row = 1; $row <= $testDateCount; ++$row) { echo '<tr>'; echo '<td>' , $worksheet->getCell('A'.$row)->getFormattedValue() , '</td>'; echo '<td>' , $worksheet->getCell('B'.$row)->getValue() , '</td>'; echo '<td>' , $worksheet->getCell('B'.$row)->getFormattedValue() , '</td>'; echo '<td>' , $worksheet->getCell('C'.$row)->getFormattedValue() , '</td>'; echo '</tr>'; } ?> </table>