16 questions about File uploading and Form handling in PHP programming

16 questions about File uploading and Form handling in PHP programming

1. Do we need to do something specific to do form handling in PHP?
2. How file uploading has to be enabled in a HTML form?
3. How PHP handles file uploading process?
4. What are configuration variables available in PHP for forms?
5. What configuration variables available in PHP for file uploading?
6. What are register_globals in PHP and how these are related to forms?
7. How form data can be accessed in a PHP script?
8. How form data can be secure from bad user inputs?…