PHPExcel can't generate data from database - php

Question

When i open the Excel file message appear:
the file you are trying to open, 'filename".xls', is in a different format than specified by the file extension. verify that the fileis not corrupted and is from a trusted source before opening the file."
The output is like this:
ÐÏࡱá;þÿ þÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
>¶#d‹‹dggÿÿÿÿÿ .....
Here is my code..
<?php
require_once 'database.php';
include 'PHPExcel.php';
$phpExcel = new PHPExcel();
$phpExcel->getActiveSheet()->setTitle("My Sheet");
$phpExcel->setActiveSheetIndex(0)
->setCellValue('A1', 'Name.')
->setCellValue('B1', 'Age');
$qry_table = ("SELECT * FROM MEMBERS");
$inc=2;
while($data_array = mysql_fetch_array($qry_table))
{
$name = $data_array['Name'];
$age = $data_array['Age'];
$$phpExcel->setActiveSheetIndex(0)
->setCellValue('A'.$inc, $name)
->setCellValue('B'.$inc, $age);
$inc++;
}
$phpExcel->setActiveSheetIndex(0);
header("Content-Type: application/vnd.ms-excel");
header("Content-Disposition: attachment; filename=\"filename.xls\"");
header("Cache-Control: max-age=0");
$objWriter = PHPExcel_IOFactory::createWriter($phpExcel, "Excel5");
$objWriter->save("php://output");
exit;

Answer 1

Where's your "mysql_query()" to query the database?
Change
$qry_table = ("SELECT * FROM MEMBERS");
to
$qry_table = mysql_query("SELECT * FROM MEMBERS");
//Edit:
And you've got a pointer ref. to an a variable which does not exsits
Change:
$$phpExcel->setActiveSheetIndex(0)
->setCellValue('A'.$inc, $name)
->setCellValue('B'.$inc, $age);
to:
$phpExcel->setActiveSheetIndex(0)
->setCellValue('A'.$inc, $name);
$phpExcel->setActiveSheetIndex(0)
->setCellValue('B'.$inc, $age);

Answer 2

When you get this error, we always recommend opening the file in a text editor and checking for leading or trailing white spaces (spaces, tabs, newlines), or a BOM marker, or any obvious PHP error messages in plain text in the file.
Try saving the file to your webserver, then opening it and see if the same error occurs