Balazs Kovacs has posted an introduction to using forms in a PHP script, a vital part of any online application.

If you have ever made any HTML page or started dynamic web programming then you probably have already meet with forms. Forms are special components which allows your site visitors to supply various information on the HTML page.

His example goes all the way from showing an example of an HTML form out to handling the data submitted to it and validating that to ensure correctness.