I don't get FirePhp FirePhp is an extension for the Firefox add-on Firebug.
I don't get why this should be used at all. How can this tool give me more than your everyday PHP debugger? Seriously? I don't understand how to implement this, can someone please explain... video with narration perhaps?
In deep narrator voice FirePHP, with a little work, lets you send information to the firebug console. It can be rather detailed. see http://www.christophdorn.com/Blog/2009/04/03/how-to-integrate-firephp-for-ajax-development/ for the best info on it. is it better than other debugging tools? debatable. Honestly, I don't really use it much.