PhpSpreadsheet/Documentation/Examples/Calculations/DateTime/DATE.php

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<?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>PHPExcel Calculation Example</h1>
<h2>Data/Time Formulae</h2>
<h3>DATE</h3>
<?php
/** Include path **/
set_include_path(get_include_path() . PATH_SEPARATOR . '../../../../Classes/');
/** PHPExcel_IOFactory */
include 'PHPExcel.php';
// Create new PHPExcel object
$objPHPExcel = new PHPExcel();
$worksheet = $objPHPExcel->getActiveSheet();
// Add some data
$testDates = array( array(2012,3,26), array(2012,2,29), array(2012,4,1), array(2012,12,25),
array(2012,10,31), array(2012,11,5), array(2012,1,1), array(2012,3,17),
array(2011,2,29), array(7,5,3), array(2012,13,1), array(2012,11,45),
array(2012,0,0), array(2012,1,0), array(2012,0,1),
array(2012,-2,2), array(2012,2,-2), array(2012,-2,-2),
);
$testDateCount = count($testDates);
$worksheet->fromArray($testDates,NULL,'A1',true);
for ($row = 1; $row <= $testDateCount; ++$row) {
$worksheet->setCellValue('D'.$row, '=DATE(A'.$row.',B'.$row.',C'.$row.')');
$worksheet->setCellValue('E'.$row, '=D'.$row);
}
$worksheet->getStyle('E1:E'.$testDateCount)
->getNumberFormat()
->setFormatCode('yyyy-mmm-dd');
echo '<hr />';
// Test the formulae
?>
<table border="1" cellspacing="0">
<tr>
<th colspan="3">Date Value</th>
<th rowspan="2" valign="bottom">Formula</th>
<th rowspan="2" valign="bottom">Excel DateStamp</th>
<th rowspan="2" valign="bottom">Formatted DateStamp</th>
</tr>
<tr>
<th>Year</th>
<th>Month</th>
<th>Day</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)->getFormattedValue() , '</td>';
echo '<td>' , $worksheet->getCell('C'.$row)->getFormattedValue() , '</td>';
echo '<td>' , $worksheet->getCell('D'.$row)->getValue() , '</td>';
echo '<td>' , $worksheet->getCell('D'.$row)->getFormattedValue() , '</td>';
echo '<td>' , $worksheet->getCell('E'.$row)->getFormattedValue() , '</td>';
echo '</tr>';
}
?>
</table>