Adapting and Performing with Variable Functions PHP supports the concept of variable functions. What that means is that you can append parentheses to a variable and use it as a function call. Although not frequently used, it can be beneficial when you want to call a function dynamically based on the value stored inside of the variable. Let’s just create some examples and see that this is pretty straight forward. We’ll start by creating two functions: subaru() and nissan(). The two functions will echo out different strings. We’ll then create a $car variable and assign a string to it that matches one of the function names: either subaru or nissan. To call