In this PHP tutorial class we take a look at Review of PHP Functions, Intro to PHP Functions, Review Create a PHP Function, Invoke a Function in PHP. In this lesson, we go over how functions work in PHP. We go through creating functions in PHP. We also learn how to invoke functions in PHP. Learning how to create functions in PHP and invoke them is extremely important. We also learn how to use function parameters and learn how to pass in data as arguments in our functions! Learning how to pass in arguments into our PHP functions is a key concept that we learn and is vital to understand in order to become an advanced PHP developer. Make sure you practice creating PHP functions before you move on to the next lessons. Understanding how return values work in PHP functions is also very important. Learning how to pass return values of one function into another function is also a key concept we go over in this section of our Learn PHP course. Make sure to practice making PHP functions, and practice passing in arguments into your functions to truly see how functions work in PHP. Thanks for watching Review of PHP Functions, Intro to PHP Functions, Review, Create a PHP Function, Invoke a Function,.