Read XLS in PHP using PhpSpreadsheet

<?php
require 'vendor/autoload.php';

use PhpOffice\PhpSpreadsheet\Spreadsheet;
use PhpOffice\PhpSpreadsheet\Writer\Xlsx;

$spreadsheet   = new Spreadsheet();
$inputFileType = 'Xlsx';
$inputFileName = './mysheet.xlsx';
/** Create a new Reader of the type defined in $inputFileType **/
$reader = \PhpOffice\PhpSpreadsheet\IOFactory::createReader($inputFileType);
/** Advise the Reader that we only want to load cell data **/
$reader->setReadDataOnly(true);
$worksheetData = $reader->listWorksheetInfo($inputFileName);
foreach ($worksheetData as $worksheet) {
    $sheetName = $worksheet['worksheetName'];
    echo "<h4>$sheetName</h4>";

    /** Load $inputFileName to a Spreadsheet Object **/
    $reader->setLoadSheetsOnly($sheetName);
    $spreadsheet = $reader->load($inputFileName);
    $worksheet   = $spreadsheet->getActiveSheet();
    print_r($worksheet->toArray());
}