10
If nothing is showing up, I sometimes find there is an syntax error in my PHP. PHP debug only seems to give messages if the file parses successfully. Things like missing quotes, etc, can cause blank screens with no PHP debug messages.
As simple check for this is to run php from the command line.
* Switch to the directory containing the file you are working with.
* php -f nameoffile.php
note that the file won't run correctly, since all of the server environment isn't set up. But it will check for syntax errors, and give you an error message.
Tom
Note that I'm a XOOPS newbie, and you shouldn't take anything I say too seriously.