In this lesson, you learn:

• That PHP’s magic quotes feature adds extra backslashes to text.

• How to use the stripslashes() function to fix the problem.

Learn how to do a sequence of checks on a value passed to a PHP page.

Topics covered:

• Understand why you need server-side and client-side validation.

• Know how to check whether a value sent to the server is a valid number.

Learn:

• How to get form data into JavaScript variables.

• How to check that data for errors.

• How to report errors to the user.

Learn:

• How to append form data to a file.

• How to read back data from the file.

• Know how to do some basic security stuff.

Learn:

• How to use the <textarea> tag.

• How to use PHP’s mail function to send an email message.

Learn:

• How PHP fetches form data.

• How to fetch data from post and get forms.

In this lesson, you learn that:

• Browsers send form data to Web servers along with URLs.

• get attaches form data to a URL. post puts it in a separate HTTP header.

• URL encoding handles special characters in URLs.

• The basic attributes of <form> are action and method.

• The basic attributes of <input> are type, name, and size.

• The basic attribute of <button> is type.