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

Well the problem is, that your SQL Statement does not have any results.

Please check if your database contains some rows for this idstire.

Answer 2

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

Answer 3

If $_GET['idstire'] is not set, you are setting $idstire to 0. Is there any entry in the table for idstire=0?

You can print your php query with $idstire replaced with its value. Take that query and execute in phpmyadmin to see the error. Also verify that row exists for the value of $idstire being used in the query.