如何在PHP中打开Excel文件？

composer require phpoffice/phpexcel

require 'vendor/autoload.php';

use PHPExcel;
use PHPExcel_IOFactory;

$objPHPExcel = PHPExcel_IOFactory::load("example.xls");
$worksheet = $objPHPExcel->getActiveSheet();
$cell = $worksheet->getCell('A1')->getValue();

echo $cell;

composer require phpoffice/phpspreadsheet

require 'vendor/autoload.php';

use PhpOffice\PhpSpreadsheet\IOFactory;

$spreadsheet = IOFactory::load("example.xlsx");
$worksheet = $spreadsheet->getActiveSheet();
$cell = $worksheet->getCell('A1')->getValue();

echo $cell;

$excel = new COM("Excel.Application") or die("Unable to instantiate Excel");
$workbook = $excel->Workbooks->Open("example.xls");
$worksheet = $workbook->Worksheets(1);
$cell = $worksheet->Range("A1")->Value;

echo $cell;

$workbook->Close();
$excel->Quit();