On the fourth line you are trying to get the value of $mas['tuto_id'], but in your SQL query you only ask for the rate and no other columns. Therefore, tuto_id will not be available to use! The same problem exists for the query assigned to $web2 since no valid ID number is available.

It is good practice to add in some checks into your scripts so that you can recognise errors or problems. You should always check to see whether MySQL encountered any error when processing a query (mysql_query returns FALSE on error). Also you should check to see if the returned resuls are what you were looking for. For example, if no rows were returned you should output a message saying that nothing was returned, rather than just outputting nothing.