public function actionExcel(){
$objPHPExcel = new PHPExcel();
$objPHPExcel->setActiveSheetIndex(0)
->setCellValue(\'A1\', \'Hello\')
->setCellValue(\'B2\', \'world!\')
->setCellValue(\'C1\', \'Hello\')
->setCellValue(\'D2\', \'world!\');
$objPHPExcel->setActiveSheetIndex(0)
->setCellValue(\'A4\', \'Miscellaneous glyphs\')
->setCellValue(\'A5\', \'eaeuaeioueiuyaouc\');
$objPHPExcel->getActiveSheet()->setTitle(\'Simple\');
$objPHPExcel->setActiveSheetIndex(0);
ob_end_clean();
ob_start();
header(\'Content-Type: application/vnd.ms-excel\');
header(\'Content-Disposition: attachment;filename="test.xls"\');
header(\'Cache-Control: max-age=0\');
$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, \'Excel5\');
$objWriter->save(\'php://output\');
}