#####A example to demonstrate Long Polling using PHP and AJAX.
##Usage
- Download and copy this project to your webroot directory.
- Rename the folder to progressbar.
- Go to progressbar/ in your browser.
- The browser shows progressbar filled by 58%.
- Edit progressbar/server/progress.txt in text editor.
- See the changes in the browser as soon as you save the progress.txt file.
- The code is well documented. Read it to understand the working.