PHP Certification Test at Brain Bench

I've passed my first test for the Brain Games - and it's the PHP4 Certification. The test was not that hard - I even managed to juggle between doing the test and doing something else (you can do the same provided you know PHP well enough). There are few questions asking about some build-in functions which I've used once or twice and couldn't seem to recall how to properly used them. Those are the question I flunked.

As my right to brag for passing the test: you can view my transcript at Brain Bench. Just fill in my transcript id 873436.