Read Xlsx file from a string

Question

I have an Xlsx file content in a string, loaded from the database.

Currently, I create the spreadsheet using a temp file:

file_put_contents($fileName, $bundle['package_blank']);
$wobook = \PhpOffice\PhpSpreadsheet\IOFactory::load($fileName);
unlink($fileName);

Any way to read it directly from memory without having to write it in a temporary file?