blocking warning: Warning: fclose()

Hi, I am using fopen to query my site from the clients site and then display the output of the query. The problem is when the query does not succeed it outputs this: Warning: fclose(): supplied argument is not a valid stream resource in c:\php\www\test-scripts\index.php on line 42 is there any way to "block" just this warning while keeping all other error handling as is? Thanks, -Ryan A