列の自動サイズ設定 phpExcel 質問する

PHPExcel で列幅を自動的に作成するにはどうすればいいですか。手動で列幅を広げるのは嫌です。他の例も見ましたが、どれもうまくいきませんでした。これが私のコードです:

$objPHPExcel->setActiveSheetIndex(0);
$objPHPExcel->getActiveSheet()->setCellValue('A1', "Company Name");
$objPHPExcel->getActiveSheet()->setCellValue('B1', "Company Type");
$objPHPExcel->getActiveSheet()->setCellValue('C1', "First Name");
$objPHPExcel->getActiveSheet()->setCellValue('D1', "Last Name");
$objPHPExcel->getActiveSheet()->setCellValue('E1', "Position");
$objPHPExcel->getActiveSheet()->setCellValue('F1', "Email");

// Set outline levels

$objPHPExcel->getActiveSheet()->getColumnDimension('E')->setOutlineLevel(1)
                                                       ->setVisible(false)
                                                       ->setCollapsed(true);

// Freeze panes

$objPHPExcel->getActiveSheet()->freezePane('A2');


// Rows to repeat at top

$objPHPExcel->getActiveSheet()->getPageSetup()->setRowsToRepeatAtTopByStartAndEnd(1, 1);




try {

    $stmt3 = $DB->prepare('SELECT * FROM companies C INNER JOIN personalInfo PI ON C.CompanyName = PI.Company_id');
    $stmt3->execute();


} catch(PDOException $e) {  
    echo $e->getMessage();  
}

$info3 = $stmt3->fetchAll();


$i = 2;
foreach($info3 as $info) {
    $objPHPExcel->getActiveSheet()->setCellValue('A' . $i, $info['CompanyName'])
                                  ->setCellValue('B' . $i, $info['CompanyType'])
                                  ->setCellValue('C' . $i, $info['firstName'])
                                  ->setCellValue('D' . $i, $info['lastName'])
                                  ->setCellValue('E' . $i, $info['position'])
                                  ->setCellValue('F' . $i, $info['email']);
    $i++;
}


// Set active sheet index to the first sheet, so Excel opens this as the first sheet
$objPHPExcel->setActiveSheetIndex(0);


// Save Excel 2007 file

$callStartTime = microtime(true);

$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel2007');
$objWriter->save(str_replace('.php', '.xlsx', __FILE__));
$callEndTime = microtime(true);
$callTime = $callEndTime - $callStartTime;

echo "Excel file has been created click <a href='Excel.xlsx'>HERE</a> to view it.";