PHP require_once failed to open stream permission denied

Question

I keep getting the error below even after changing the permissions of the folder. I don\'t know what to do. Not sure why. Any help would be greatly appreciated. I\'m working

Answer 1

The problem was not a permission issue. The file I was including was named mysql_connect.php which I think conflicts with either one of mysql's files or functions so the server was confusing my file for that and wouldn't require_once() or include_once() or include() the file. Hence the permission denied fatal error. I change the name of the file and all is well. Thanks to you all for trying to help me out.