PHP mysql_num_rows die error

Question

I want to create one page, where users add their informations.. I allready have that page created, but my real problem its down code..

I have some kind of problem, with

Answer 1

mysql_query should have the second parameter as the connection which is in your case $db

$resource = mysql_query("SELECT * FROM stiri2 WHERE idstire = " . $idstire,$db);

if this also not works then use mysql_error to know the exact error

$row=mysql_num_rows($resource);
if($row)
{

}
else
{
    mysql_error();
}

this will show you if there is problwm in mysql_num_rows