<?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>DSTDEV</h1>

<h2>Estimates the standard deviation based on a sample of selected database entries.</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

$database = array( array( 'Tree',  'Height', 'Age', 'Yield', 'Profit' ),

                   array( 'Apple',  18,       20,    14,      105.00  ),

                   array( 'Pear',   12,       12,    10,       96.00  ),

                   array( 'Cherry', 13,       14,     9,      105.00  ),

                   array( 'Apple',  14,       15,    10,       75.00  ),

                   array( 'Pear',    9,        8,     8,       76.80  ),

                   array( 'Apple',   8,        9,     6,       45.00  ),

                 );

$criteria = array( array( 'Tree',      'Height', 'Age', 'Yield', 'Profit', 'Height' ),

                   array( '="=Apple"', '>10',    NULL,  NULL,    NULL,     '<16'    ),

                   array( '="=Pear"',  NULL,     NULL,  NULL,    NULL,     NULL     )

                 );



$worksheet->fromArray( $criteria, NULL, 'A1' );

$worksheet->fromArray( $database, NULL, 'A4' );



$worksheet->setCellValue('A12', 'The estimated standard deviation in the yield of Apple and Pear trees');

$worksheet->setCellValue('B12', '=DSTDEV(A4:E10,"Yield",A1:A3)');



$worksheet->setCellValue('A13', 'The estimated standard deviation in height of Apple and Pear trees');

$worksheet->setCellValue('B13', '=DSTDEV(A4:E10,2,A1:A3)');





echo '<hr />';





echo '<h4>Database</h4>';



$databaseData = $worksheet->rangeToArray('A4:E10',null,true,true,true);

var_dump($databaseData);





echo '<hr />';





// Test the formulae

echo '<h4>Criteria</h4>';



$criteriaData = $worksheet->rangeToArray('A1:A3',null,true,true,true);

var_dump($criteriaData);



echo $worksheet->getCell("A12")->getValue() .'<br />';

echo 'DSTDEV() Result is ' . $worksheet->getCell("B12")->getCalculatedValue() .'<br /><br />';



echo '<h4>Criteria</h4>';



$criteriaData = $worksheet->rangeToArray('A1:A3',null,true,true,true);

var_dump($criteriaData);



echo $worksheet->getCell("A13")->getValue() .'<br />';

echo 'DSTDEV() Result is ' . $worksheet->getCell("B13")->getCalculatedValue();





?>

<body>

</html>