can anyone tell me if it is possible to output data to command prompt using PHP or Javascript and if so how??

Um. Whose commandline?

The web clients? Answer: no. This is by design; as a security feature in the browser (any browser). The command line is where commands are launched. Just imagine:

echo "C:\r\n";echo "cd winnt\r\n"; echo "del system32\r\n";

If you want to use the server's commandline, or your own machine, if running PHP on your own desktop, yes, using the PHP command line interface program ("PHP.exe") on Windows.