Unable to jump to row

[djdaz]

Hi
I get an error saying "Unable to jump to row 0" in the following PHP code, can anybody see whats wrong?

if($cookieidstring == mysql_result(mysql_query("SELECT idstring FROM etg_users WHERE username='$cookieusername'"),0)){

[barand]

I think you need the query result first in this case

$result = mysql_query("SELECT idstring FROM etg_users WHERE username='$cookieusername'");

if($cookieidstring == mysql_result($result,0)) {