Simple AJAX Chat	2.8/5.0 (18 votes total) Rate: Select 1 - Terrible 2 - Poor 3 - Average 4 - Good 5 - Outstanding
March 20, 2006

This Ajax Chat is so simple, you will laugh!

try it out

if spammed or crowded, try room2 or room3

Basics

• we have 2 files - index.html and w.php
• index.html reads the content and sends your message to w.php
  
• w.php writes the content and prunes it to $maxlines lines
  

• content stored as text in chat.txt

• this uses 2 http_requests - 1 for checking the content, 1 for sending your message

The setup is as simple as it can be

2 steps

• copy index.html and w.php in a directory of your choice
• create a file called chat.txt with write-rights for php

you could also do like this:

• copy index.html and w.php
• chmod 777 the whole dir
• start the app to create the chat.txt file
• chmod 755 the dir and 777 the chat.txt

Ridiculously Simple - The Source

Feel free to use/modify it for whatever you want. It's just about the idea.

The 20 lines of JavaScript sourcecode you find in here:

• index.html

And this is the w.php, which also prunes the content:

add this on top to get a minimum-wait time:

  	$waitsecs = 5;
 	$lastvisit = $_COOKIE["lachatlv"];
	setcookie("lachatlv", time());

	if ($lastvisit != "") {
		$diff = time() - $lastvisit;
		if ($diff < $waitsecs) { die();	}

	}

This article was written by Chris at Linuxuser.at .