How AJAX Work in PHP

what is Ajax?

AJAX  Stand for Asynchronous Javascript and XML

AJAX is a Technique for creating fast and dynamic web pages.

AJAX allows web pages to be updated asynchronously by exchanging small amounts of data with the server behind the scenes. This  means that it is possible to update 

parts od a web page, without reloading the whole page.

Classic Web Pages, must reload the entire page if the content should change.

Example of Using AJAX:- 

1.Google Maps:- Without Reload the get Show Map. 

2.Gmail:- Without Reloading Notification of Getting Mail.

3.Youtube, Facebook:-Same as Above

AJAX allows web pages to be updated asynchronously by exchanging small amounts of data with the server behind the scenes. This means that it is possible to update parts of a web page, without reloading the whole page. Classic web pages, (which do not use AJAX) must reload the entire page if the content should change.