Eli Tutorials
Part 1: Introduction to PHP Programming
Part 3: Comments and INCLUDE in PHP Programming
Part 4: Variables in Print in PHP Programming
A static page, like a form, would be created in HTML. HTML then passes this information to PHP, which can do things dynamically with the information submitted from that form, such as writing it to a file or database, or sending it through email.
A text box is where you can type in text such as a name or email address. An option box gives a list of options that can be selected from a drop down menu, such as T-Shirt sizes (small/medium/large). Radio buttons give a number of options, but the user can only select one.
The link above is the sample code created with Eli's demonstration of HTML forms and PHP programming. The link initially leads you to a simple HTML form which contains a text box that will accept the user's name, an option box which will allows the user to choose a shirt size from a drop down menu, and a radio button that will allow the user to choose one gender. After hitting submit, PHP will process the code and output the answers that the user has supplied.