[php/mysql] query con variabile..

[piero.mac]

$query_level_info = "SELECT next_level, name_level 
                            FROM `level` 
                            WHERE this_level = {$row_exp_inf['Exp']} ";

oppure

$query_level_info = "SELECT next_level, name_level 
                            FROM `level` 
                            WHERE this_level = $row_exp_inf[Exp] ";

oppure

$query_level_info = "SELECT next_level, name_level 
                            FROM `level` 
                            WHERE this_level = " .$row_exp_inf['Exp'];

ammesso che "this_level" sia un campo numerico e la variabile contenga un numero....