Export data and send mail attachment Codeigniter - php

Question

I would like to export the data and insert the Excel file as an attachment. How to do that with codeigniter 2.2.4.
// PHP EXPORT DATA
...
...
$objWriter = IOFactory::createWriter($objPHPExcel, 'Excel5');
header('Content-type: application/vnd.ms-excel');
header('Content-Disposition: attachment; filename="test.xls"');
header('Cache-Control: max-age=0');
$objWriter->save('php://output');
// SEND MAIL
$this->load->library('email');
$this->email->from('test#gmail.com', 'Test');
$this->email->to('test#gmail.com', 'Test');
$this->email->subject('EXPORT DATA FILE');
$this->email->message("Test content");
$this->email->attach("INSERT HERE THE EXPORTED FILE");
try {
$this->email->send();
}
catch(Exception $e) {
echo $e->getMessage();
}

Answer 1

My controller :
public function export() {
$this->load->library('PHPExcel');
$this->load->library('PHPExcel/IOFactory');
$objPHPExcel = new PHPExcel();
$objPHPExcel->getProperties()->setTitle("title")->setDescription("description");
// Assign cell values
$objPHPExcel->setActiveSheetIndex(0);
// /////////////////////////////////////////////////////
$wappi_query = 'SELECT * FROM ' . $my_table . '';
$wappi_list = $this->db->query($wappi_query)->result();
// /////////////////////////////////////////////////////
$objPHPExcel->getActiveSheet()->getColumnDimension('A')->setWidth("10");
/*Protected Sheet */
$objPHPExcel->getActiveSheet()->getProtection()->setSheet(false);
/* File information */
$objPHPExcel->getProperties()->setCreator("")->setLastModifiedBy("")->setTitle("")->setSubject("")->setDescription("")->setKeywords("")->setCategory("");
$objPHPExcel->getDefaultStyle()->getFont()->setName('Tahoma')->setSize(10)->setBold(false);
$objPHPExcel->getActiveSheet()->setCellValue('A1', "ID");
$objPHPExcel->getActiveSheet()->setCellValue('B1', "UNITY");
$i = 2;
foreach ($wappi_list as $data) {
$objPHPExcel->getActiveSheet()->setCellValue('A' . $i . '', $data->id);
$objPHPExcel->getActiveSheet()->setCellValue('B' . $i . '', $data->unity);
$i++;
}
$objWriter = IOFactory::createWriter($objPHPExcel, 'Excel5');
header('Content-type: application/vnd.ms-excel');
// It will be called file.xls
header('Content-Disposition: attachment; filename="unity_' . date('d-m-Y') . '.xls"');
header('Cache-Control: max-age=0');
$objWriter->save('php://output');
}