[PHP] ERROR IN THIS CODE

[Jorge]

include('include/conexion.php');
        include('include/conf.php');

                                        $sql = "SELECT * FROM oposicions WHERE id = 
'$id'";----------------> I think that the problem is here.
                                
                                 
                                            $result = mysql_query($sql, $link);

                                            while( ($row=mysql_fetch_object($result)) 
) {
                                            $nome = $row->nome;


In my database exist the table oposicions with a field called id.My php version es 
4.3.38 and of mysql is 3.23.58

thank you in advance