dBug is a PHP class which is a PHP version of COldFusion’s cfdump.
This helps developer to dbug the code which is a very structured form. It output the result in tabular form.
It supports Arrays, Classes/Objects, Database and XML Resources.You can force an object variable to be outputted as an array type variable.
We can easily customize the stylesheet and tables are toggle with expand and collapse features.

It is free. You can donwlad at http://dbug.ospinto.com/

A simple example :

dBug