Chapter 6: Validation Functions

Published: 25 June 2026
on channel: Marianne Gibson

In this video, we continue our PHP chapter by learning how to validate form data before processing it.

When users submit an HTML form, we need to make sure the information is complete, usable, and safe to work with in PHP. Client-side validation with HTML5 and JavaScript can help guide the user, but server-side validation with PHP is still necessary because client-side validation can be bypassed.

By the end of this video, you should understand why validation should happen before processing form data and how these PHP functions can help make your form processing more reliable.

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