HTML : Hypertext Markup Language is the standard markup language for creating web pages and web applications.
FORM Validation : Validation of HTML form data is important to protect your form from hackers and spammers!
Files handling : File handling is an important part of any web application. You often need to open and process a file for different tasks.
File upload : A PHP script can be used with a HTML form to allow users to upload files to the server.