More data validation in PHP

This tutorial shows some more data validation methods following on from the form data validation tutorial. In this tutorial, you will be shown how to implement the following data validation …

Select lists and PHP

Select lists, which are created in HTML code, can be useful when a user needs to select one or more items from a list of different items. This tutorial explains …

Constants in PHP

This tutorial explains how to define and use constants in PHP. Constants contain a fixed value that cannot be changed after it has been set. Constants are useful for when …