csv to excel conversion

PHPExcel is deprecated. You must use PhpSpreadsheet.

With PhpSpreadsheet, you can convert csv to xlsx by the following code:

$reader = \PhpOffice\PhpSpreadsheet\IOFactory::createReader('Csv');

// If the files uses a delimiter other than a comma (e.g. a tab), then tell the reader
// $reader->setDelimiter("\t");
// If the files uses an encoding other than UTF-8 or ASCII, then tell the reader
// $reader->setInputEncoding('UTF-16LE');

$objPHPExcel = $reader->load('/home/superman/projects/test/csv-app/file.csv');
$objWriter = \PhpOffice\PhpSpreadsheet\IOFactory::createWriter($objPHPExcel, 'Xlsx');
$objWriter->save('excel_file.xlsx');

Note: PHPExcel is now listed as DEPRECATED.

Users are directed to PhpSpreadsheet.

Using PhpSpreadheet:

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

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

$spreadsheet = new Spreadsheet();
$reader = new \PhpOffice\PhpSpreadsheet\Reader\Csv();

/* Set CSV parsing options */

$reader->setDelimiter(',');
$reader->setEnclosure('"');
$reader->setSheetIndex(0);

/* Load a CSV file and save as a XLS */

$spreadsheet = $reader->load('../../uploads/test.csv');
$writer = new Xlsx($spreadsheet);
$writer->save('test.xlsx');

$spreadsheet->disconnectWorksheets();
unset($spreadsheet);

This one worked for me like a charm ! Cheers !!!