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

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.