Export ACCESS table csv

$fname = "data.csv" ;
$html_output = '';
			
$sqlcsv = " SELECT * FROM banque";
			
if (false === $result = odbc_exec($cnx, $sqlcsv)) die('Impossible de générer le fichier, voici l\'erreur :'.mysql_error());
  
  
$num_fields = odbc_num_fields($result);
 
/*for ($i = 0; $i < $num_fields; $i++) {
  $html_output.= odbc_field_name($result , $i).",";
}*/
$html_output = substr($html_output,0, -1)."\r\n";
 
while($row = odbc_fetch_row($result)){
  for ($i=0; $i < $num_fields; $i++) {
    $html_output.= $row[$i].";";
	
  }
  $html_output = substr($html_output,0, -1)."\r\n";
}
 
header('Content-Type: text/csv'); 
header('Content-Disposition: attachment; filename="data.csv"');
header('Pragma: no-cache');
header('Expires: 0');
 
echo $html_output;