Explorer. Вот код:
$SQL="SELECT * FROM downloads where id = \'".$id."\'";
$result=mysql_query($SQL);
$num_results=mysql_num_rows($result);
if ($num_results == 0)
{
print \'
Не верно заданы параметры
\';
exit;
}
$row=mysql_fetch_object($result);
$summa_book=$row->summa;
$name_book=$row->name;
$path_book=$row->path;
$summa_book=$summa_book+1;
$SQL="UPDATE downloads SET summa=\'$summa_book\' where id = \'".$id."\'";
$result=mysql_query($SQL);
mysql_close($conn);
header("Content-Disposition: attachment; filename=\'$path_book\'");
header("Content-Type: application/x-force-download; name=\\"$path_book\\"");