chat functionality on php application

SO has lot many questions of this type but not able to find correct solution. May be I am missing anything.

I am struggling from last few days for finding better option for Chat service. Following thing I have to keep in mind before using any option..

• It should be OS independent
• Installation should be easy
• Opensource so that can be modify as per requirement.
• Lightweight
• Chat Client should be customizable and 开发者_如何学运维lightweight
• File Sharing, Private Chat, Group Chat, emotions should be there.
• Chat should not allow user to connect with other outsider chat servers like gmail, AOL, etc..

I have developed chat service using Openfire server as chat server and Jetty applet as client. But this applet is not as userfriendly and need to work a lot to make it look like gmail chat or facebook chat.. Also I am going to use Zend framework, PHP, MySQL, Apache server. And server OS could be windows or Linux.

Here are few more questions...

• Is there way to use openfire server as chat server with some other javascript/AJAX/Dojo as Client?
• How we can use XAMPP-BOSH for Chat service? Is this XAMPP is related to XAMPP server of apache, PHP, etc...?
• How we can use Dojo.io.cometd library for chat?

Consider AjaxIM. A colleague of mine developed it. There's no PHP aspect (there was, but it is no longer supported), but the front-end is entirely written in JavaScript and the back-end uses Node.js. This is very fast and should be relatively portable. I do not know whether it supports things like file sharing or group chat, though I do know that it does allow user-to-user communication.

I have set openfire http-bind port to 8181 previously 7070.

Following changes i have done in ijab_config.js

xmpp:{ 
domain:"ipaddress", 
http_bind:"/http-bind/", 
host:"ipaddress:8181", 
port:5222, 
server_type:"Openfire", 
muc_servernode:"ipaddress",
...
} 

and following will go to .htaccess file which will be placed in htdocs

AddDefaultCharset UTF-8 
Options +MultiViews 
<IfModule mod_rewrite.c>  
      RewriteEngine On 
      RewriteRule http-bind/ http://ipaddress:8181/http-bind  [P] 
</IfModule>

Here ipaddress can be replace with localhost or domain name.