PHP สอบถามเรื่องการดึงค่าจาก Database แล้ววนลูปลง Excel ครับ

// Write data from MySQL result
$objConnect = mysql_connect("localhost","root","root") or die("Error Connect to Database");
$objDB = mysql_select_db("mydatabase");
$strSQL = "SELECT * FROM customer";
$objQuery = mysql_query($strSQL);
$i = 2;
while($objResult = mysql_fetch_array($objQuery))
{
	$objPHPExcel->getActiveSheet()->setCellValue('A' . $i, $objResult["CustomerID"]);
	$objPHPExcel->getActiveSheet()->setCellValue('B' . $i, $objResult["Name"]);
	$objPHPExcel->getActiveSheet()->setCellValue('C' . $i, $objResult["Email"]);
	$objPHPExcel->getActiveSheet()->setCellValue('D' . $i, $objResult["CountryCode"]);
	$objPHPExcel->getActiveSheet()->setCellValue('E' . $i, $objResult["Budget"]);
	$objPHPExcel->getActiveSheet()->setCellValue('F' . $i, $objResult["Used"]);
	$i++;
}
mysql_close($objConnect);

function int2ExcelColumn($id){
    $alpha = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';
    $column = ''; $num=$id;
    while($num){
        $a = $num % 26;
        $num = Math.floor(($num / 26);
        $column = substr( $alpha, $a, 1) . $column;
    }
    return $column;
}