<?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>PhpSpreadsheet Reader Example #10</title>

</head>
<body>

<h1>PhpSpreadsheet Reader Example #10</h1>
<h2>Simple File Reader Using a Configurable Read Filter</h2>
<?php

require_once __DIR__ . '/../../../src/Bootstrap.php';

$inputFileType = 'Xls';
//	$inputFileType = 'Xlsx';
//	$inputFileType = 'Xml';
//	$inputFileType = 'Ods';
//	$inputFileType = 'Gnumeric';
$inputFileName = './sampleData/example1.xls';
$sheetname = 'Data Sheet #3';

class MyReadFilter implements \PhpOffice\PhpSpreadsheet\Reader\IReadFilter
{
    private $_startRow = 0;

    private $_endRow = 0;

    private $_columns = [];

    public function __construct($startRow, $endRow, $columns)
    {
        $this->_startRow = $startRow;
        $this->_endRow = $endRow;
        $this->_columns = $columns;
    }

    public function readCell($column, $row, $worksheetName = '')
    {
        if ($row >= $this->_startRow && $row <= $this->_endRow) {
            if (in_array($column, $this->_columns)) {
                return true;
            }
        }

        return false;
    }
}

$filterSubset = new MyReadFilter(9, 15, range('G', 'K'));

echo 'Loading file ',pathinfo($inputFileName, PATHINFO_BASENAME),' using IOFactory with a defined reader type of ',$inputFileType,'<br />';
$reader = \PhpOffice\PhpSpreadsheet\IOFactory::createReader($inputFileType);
echo 'Loading Sheet "',$sheetname,'" only<br />';
$reader->setLoadSheetsOnly($sheetname);
echo 'Loading Sheet using configurable filter<br />';
$reader->setReadFilter($filterSubset);
$spreadsheet = $reader->load($inputFileName);

echo '<hr />';

$sheetData = $spreadsheet->getActiveSheet()->toArray(null, true, true, true);
var_dump($sheetData);

?>
<body>
</html>