How can the error message "Die Datei 'test.xlsx' kann von Excel nicht geöffnet werden, da das Dateiformat ungültig ist" be resolved?

The error message "Die Datei 'test.xlsx' kann von Excel nicht geöffnet werden, da das Dateiformat ungültig ist" indicates that the Excel file 'test.xlsx' is corrupted or in an invalid format. To resolve this issue, you can try to repair the file using Excel's built-in repair function or try opening the file in a different spreadsheet program to see if it can be read. 

// Example PHP code to try and open the Excel file using a different library
require 'vendor/autoload.php'; // Include the PHPExcel library

$inputFileName = 'test.xlsx'; // Path to the Excel file

$inputFileType = \PhpOffice\PhpSpreadsheet\IOFactory::identify($inputFileName);
$reader = \PhpOffice\PhpSpreadsheet\IOFactory::createReader($inputFileType);

$spreadsheet = $reader->load($inputFileName);

// Now you can work with the $spreadsheet object to read the data from the Excel file

Keywords

Excel file format PHPExcel invalid error message

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