Chapter 5
Forms, PHP, and Form Processing
When you surf the Web, from a desktop, laptop, notepad, or smartphone, information flows from servers to your browser. But the Web is much more than a one-way street. You can also enter information into the browser to be sent to the server or processed directly by JavaScript programs on the client side.
HTML provides a complete set of form and input elements to obtain user input and upload data, including files, to the server. A form element can specify a server-side program to receive and process the uploaded data and provide a response for the user. The Web would be a much poorer place without the ability to collect and process user input. In fact, e-business and e-commerce are dependent on the interactive ...
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