The PHP Chat need a java chat server, it offers you 3 mode to meet your different requirements for your website chat room.

1) Chat server hosted by your own.
Please download and install 123FlashChat Server first, we provide Windows/Linux/Mac system packages.
http://www.123flashchat.com/download.html.

2) Chat server hosted by 123flashchat.
Please purchase a host from 123flashchat: http://www.123flashchat.com/host.html
Or apply a 15 days trial host here: http://www.123flashchat.com/host/apply.php

3) Chat server hosted by 123flashchat free of charge.
This chat server mode aims at testing the basic functions, only supported 1 room, no video chat function, you can select the mode 1 or 2 to get the full functions and control your chat room.