Today we are going to learn how to create a simple Whatsapp-like chat system using PHP, jQuery and XML.
The reason I decided to use XML is because there are already a lot of tutorials on the internet that use databases to store chat messages. While using a database for this is still a good idea, this is another approach you can implement to relieve your database a bit. XML is light and easily extensible. It is the right technology to use for this purpose. Let's get started shall we?