Install Library Phpspreadsheet via Composoer Autoload not working?

@mrardiyansyah,

I have been using a plain PHP application and PHP Spreadsheet for quite a few years.

I have PhpSpreadsheet installed in /var/www/ci2/vendor and use the following script to create a new instance:

PHP Code:

require '/var/www/ci2/vendor/autoload.php';  
    use PhpOffice\PhpSpreadsheet\Spreadsheet;
    use PhpOffice\PhpSpreadsheet\Writer\Xlsx;


//==============================================
PRIVATE function _convertXlsToCsv
(
  string $xls, 
  string $csv
)
:bool
{
  $result = FALSE;

  try {
    $spreadsheet = \PhpOffice\PhpSpreadsheet\IOFactory::load($xls);
    $writer = new  \PhpOffice\PhpSpreadsheet\Writer\Csv($spreadsheet);
    $writer->setUseBOM(true);
    $writer->save($csv);
  }catch (Exception $e){
    print_r($e->message(), '$e->message()', 'red');
  }
  $result = file_exists($csv);

  return $result;
}//