In this PHP programming exercise, we take a look at Invoking Functions Explained in PHP, How to Invoke a Function in PHP, Function Invocation Codecademy. This is based on the “Introduction to PHP Functions” section on Codecademy. We are learning how to invoke a function in PHP. To invoke a function means to call the function. In order to call the function, you use the function name, followed by parenthesis. When we define a function, this only tells the computer to associate the name of the function to the set of instructions we define in the code block, but in order to call the function, we must invoke it! This will tell the computer to grab the instructions that are specific to the function name we use. When we refer to a function outside of our code or even in our comments, it is conventional that we refer to them by the name followed by parentheses. Learn how to invoke functions in PHP to truly begin to master PHP. Practice invoking PHP functions by creating functions using different examples. Practicing invoking PHP functions and begin to truly master the craft. Learning function invocation is a key concept in your PHP programming journey. Make sure to practice them over and over to truly begin to understand PHP functions. Thanks for watching Invoking Functions Explained in PHP, How to Invoke a Function in PHP, Function Invocation Codecademy.