Salvare il risultato di una query in un array

[marketto]

$db = mysql_connect($host, $user_db, $pass_db) or die(mysql_error());
mysql_select_db($nome_db,$db) or die(mysql_error());
$res = mysql_query ("SELECT * FROM tabella WHERE id = $id") or die(mysql_error());
$temp=array();
if (mysql_num_rows($res) != 0){
	while ($row=mysql_fetch_assoc($res))
		$temp[]=$row;
} else
	echo "No Records!";
echo "<pre>\n";
print_r($temp);
echo "</pre>\n";