In Part 1 of this tutorial, we pretty much covered the basics of PHP; what it is, its basic data structures, and how it can be used in web development projects. If you did not read Part 1, you might want to check it out before you continue reading. In Part 1, we left off with the standard variables type available in PHP and how PHP does automatic type casting under the hood for your. In Part 2 here, we begin to explore some of the more advanced features of PHP, including Arrays.