“Warning: mysql_query(): supplied argument is not a valid MySQL-Link” - Why?

Question

What\'s wrong with my code? I keep getting this error: Warning: mysql_query(): supplied argument is not a valid MySQL-Link resource in functions.php on line 4 error readin

Answer 1

The problem is here: mysql_query("SHOW TABLES LIKE '$gn'",$db)

There is no $db in scope.

If you are only using one database connection and you have already connected, you can just remove this argument.