Umm I don't think so, you mean like see what people input into the fields? No, i have no way of doing that....one thing I noticed, but im not sure if it's why it's not working is my old VPS ran on PHP 5.3, this is on php 5.4...
but, i'm not sure if that'd cause this kind of issue.....as I thought most PHP versions were backwards compatible anyway.
I can take a look at the php code if you like (send via pm) you can obviously strip out any passwords and sql connection details.
Older versions of PHP didn't require that you check that a variable is set before testing it. However later versions do. but to be honest if it worked on 5.3 it should also work on 5.4. It could just be the error handling is wrong and the issue lies else where.