mysql_fetch_array() expects parameter 1 to be resource, boolean given in

session_start();
include('../config.php');


//connect to the database
mysql_select_db("syahadmin");

//query the database
$query = mysql_query("SELECT * FROM staff where staff_name = 'Aidia'");

//fetch the results /convert results into an array   //this is happening
		WHILE ($rows = mysql_fetch_array($query)) :
		//do this
		   $staff_name =$rows['staff_name'];
		   $staff_id =$rows['staff_id'];
		   $staff_email =$rows['staff_email'];
		   $staff_telno =$rows['staff_telno'];
		   $staff_address =$rows['staff_address'];
		   $staff_district =$rows['staff_district'];
		   $staff_poscode =$rows['staff_poscode'];
		   $staff_username =$rows['staff_username'];
		   $staff_password =$rows['staff_password'];
		   $staff_picture =$rows['staff_picture'];

require('mysql_table.php');

class PDF extends PDF_MySQL_Table
{
function Header()
{
	//Title
	$this->SetFont('Arial','',18);
	$this->Cell(0,6,'Staff Information',0,1,'C');
	$this->Ln(10);
	//Ensure table header is output
	parent::Header();
}
}


$pdf=new PDF();                                     
$pdf->AddPage();
//First table: put all columns automatically
$pdf->Table('SELECT `staff_name`, `staff_id`,`staff_email`,`staff_telno`,`staff_address`,`staff_poscode`,`staff_district`,`staff_state`
 from staff order by `staff_name`');
$pdf->AddPage();
//Second table: specify 3 columns
$pdf->AddCol('staff_name',43,'','C');
$pdf->AddCol('`staff_id`,',40,'staff','C');
$pdf->AddCol('staff_email',40,'','C');
$pdf->AddCol('staff_telno',40,'','C');
$pdf->AddCol('staff_address',40,'','C');
$pdf->AddCol('staff_poscode',40,'','C');
$pdf->AddCol('staff_district',40,'','C');
$pdf->AddCol('staff_state',40,'','C');
$prop=array('HeaderColor'=>array(255,150,100),
			'color1'=>array(210,245,255),
			'color2'=>array(255,255,210),
			'padding'=>2);
$pdf->Table('select staff_name,  staff_id, staff_email, staff_telno, staff_address, staff_poscode, staff_district, staff_state, 
 from staff order by staff_name limit 0,10',$prop);

//$pdf->Output("C:\Users\John\Desktop/somename.pdf",'F'); 


$pdf->Output($downloadfilename.".pdf"); 
header('Location: '.$downloadfilename.".pdf");
 endwhile;
?>