Cannot change CSV delimiter to tab - codeigniter

Question

I'm going to export all of my data in mySQL using PHPExcel with CSV Format. Here is my code:
function exportHartatoCSV() {
$memberid = $this->input->post('memberid');
$tahun = $this->input->post('tahunpajak');
$this->db->where('taxYear', $tahun);
$this->db->where('memberID', $memberid);
$query = $this->db->get('list_harta');
$this->load->library("excel");
$objPHPExcel = new PHPExcel();
$objPHPExcel->setActiveSheetIndex(0)
->setCellValue('A1', 'Tahun Pajak')
->setCellValue('B1', 'Pembetulan')
->setCellValue('C1', 'Kode Harta')
->setCellValue('D1', 'Jenis Harta')
->setCellValue('E1', 'Tahun Perolehan')
->setCellValue('F1', 'Harga Perolehan')
->setCellValue('G1', 'Keterangan');
$row = 2;
$workbookName = $this->MemberModel->getNPWP($memberid);
header('Content-Type: application/vnd.ms-excel');
header('Content-Disposition: attachment;filename="'.$workbookName.'.csv"');
header('Cache-Control: max-age=0');
$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'CSV');
$objWriter->setDelimiter("\t");
$objWriter->setEnclosure('');
$total = 0;
foreach ($query->result() as $key) {
$objPHPExcel->getActiveSheet()->setCellValue('A'.$row, $key->taxYear);
$objPHPExcel->getActiveSheet()->setCellValue('B'.$row, $key->pembetulan);
$objPHPExcel->getActiveSheet()->setCellValue('C'.$row, $key->hartaID);
$objPHPExcel->getActiveSheet()->setCellValue('D'.$row, $key->hartaName);
$objPHPExcel->getActiveSheet()->setCellValue('E'.$row, $key->hartaYear);
$objPHPExcel->getActiveSheet()->setCellValue('F'.$row, $key->hartaPrice);
$objPHPExcel->getActiveSheet()->setCellValue('G'.$row, $key->hartaDesc);
$total += $key->hartaPrice;
$row++;
}
$objPHPExcel->getActiveSheet()->setCellValue('E'.$row, "Total Harta:");
$objPHPExcel->getActiveSheet()->setCellValue('F'.$row, $total);
$objWriter->save('php://output');
}
I want to change the delimiter from , to tab (like writing data to the next column. But it doesn't work. The strings are stick to each other. The output is like this:
Output
But I want the output is like this:
Expected Output
What I really want is a normal-looking excel table, but with .csv format.

Answer 1

So you need tab-delimited text (csv) file or you just want "normal"-looking excel table?
You must remember that there is a system list delimiter that is used in excel by default. In windows you can set that delimiter in your Region and Language, in Additional settings. It's called as List separator there. In some countries default value is ";", in others ",".
If you don't want to change your default delimiter you have an option to choose delimiter in Excel when you open file.
Update
You can use both options, but it looks like it's easier to set the delimiter in PHPExcel export settings to that delimiter that is set by default in your client's OS, than explain them to set custom delimiter in excel when opening file.
$objWriter->setDelimiter(";");
or
$objWriter->setDelimiter(",");
Update 2
If you have clients from different countries and/or they use different operating systems (mac/linux, windows), so they may have different system separators, then you'll need to save 2 versions of each file (with both , and ; delimiters). Or you'll need to explain them how to work with it.
I'm putting this system setting screenshots just for example:
Mac OS
Windows

Answer 2

As #teeyo mentioned, you might need to make sure you import it using the delimiter in Excel (or other spreadsheet editor). It might already be correct in the data generated by CI:
To verify the data is correct in the file itself, you can open it in eg. Notepad++ and use the Show All Characters feature: