<?php

namespace Samples\Sample12;

use PhpOffice\PhpSpreadsheet\IOFactory;
use PhpOffice\PhpSpreadsheet\Reader\IReadFilter;

require __DIR__ . '/../Header.php';

$inputFileType = 'Xls';
$inputFileName = __DIR__ . '/sampleData/example1.xls';
$sheetname = 'Data Sheet #3';

class MyReadFilter implements IReadFilter
{
    public function readCell($column, $row, $worksheetName = '')
    {
        // Read rows 1 to 7 and columns A to E only
        if ($row >= 1 && $row <= 7) {
            if (in_array($column, range('A', 'E'))) {
                return true;
            }
        }

        return false;
    }
}

$filterSubset = new MyReadFilter();

$helper->log('Loading file ' . pathinfo($inputFileName, PATHINFO_BASENAME) . ' using IOFactory with a defined reader type of ' . $inputFileType);
$reader = IOFactory::createReader($inputFileType);
$helper->log('Loading Sheet "' . $sheetname . '" only');
$reader->setLoadSheetsOnly($sheetname);
$helper->log('Loading Sheet using filter');
$reader->setReadFilter($filterSubset);
$spreadsheet = $reader->load($inputFileName);

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