[Artlav]

I'm really confused by this. Don't debuggers come embedded into any IDE worth using?

How could someone start programming this century without access to one?

[pathartl]

In the PHP world I'd argue most developers don't use an IDE, let alone a debugger. Setting a debugger up with Xdebug or ZendDebugger is also not easy for those less experienced with setting up the actual PHP environment.