Well to get an idea of what you can and can't do, I'd first look for a similar existing site to what you'd like to create. Once you're on that site try to see what it was coded in by looking at the URLs. If you see something like page.php, then I think it's safe to say that it was coded in PHP. However, if you see some Java applet pop up, then it was probably coded in Java instead. That doesn't necessarily mean it's not possible in PHP though but usually it seems that Java is more appropriate for more complex things.
I'm no expert though so keep that in mind, good luck with learning it.
|