What’s Next
Now that you understand the principles behind variables, such as how they’re created and how they can be used, as well as some more in-depth concepts, you’re ready to collect input from your visitor. The first example in this chapter, in which the program’s output changed depending on what string was given in the URL, showed you a brief preview of this.
In the next section, you’ll learn about gathering input; you’ll also learn about sending input to a PHP program using the form or the URL itself, as we did in the example at the beginning of this chapter. You’ll also learn some more about performing output operations, and you’ll find that echo definitely isn’t the only way to do so.