Re: Warning: mysql_num_rows(): supplied argument is not a valid MySQL result resource in

[putraikim_n9 den]

Warning: mysql_num_rows(): supplied argument is not a valid MySQL result resource in D:\inetpub\vhosts\intake38.net\httpdocs\masuk2.php on line 18

<? session_start();

if (isset($HTTP_POST_VARS['bio_notentera']) && isset($HTTP_POST_VARS['bio_pass']))
{
// if the user has just tried to log on
$bio_notentera = $HTTP_POST_VARS['bio_notentera'];
$bio_pass = $HTTP_POST_VARS['bio_pass'];

include 'dbase.php';

$query = "SELECT * FROM biodata
WHERE bio_notentera = '$bio_notentera'
AND bio_pass = '$bio_pass'
";

$result = mysql_db_query($db,$query);


if ( mysql_num_rows($result) > 0 ) <--- at this problem