hello

I believe Hampton Paulk explain it very well in the PHP Functions course.

However, in a function you define something that you want to call or use at any time you want.

Example:

function NameOfFunction (x = 1) {
    echo "x is equal to 1"
} else {
  echo "x is not equal to 1"
}

Then you have defined your function. A very simple one. first you write function to tell the code that you want to run a function. Then you name the function. Then you can make a condition. in this case x = 1.

If x = 1, then if will echo out "x is equal to 1"

If x is not equal to 1 it will echo out "x is not equal to 1"

And you just decide x by typing whatever x is. So you could write x = 2 and then it would echo out the 'else'. which is "x is not equal to 1"

That is generally how functions work.