Let's look at the parameters and arguments.
It's a description of the name and it's a separate page because you've seen a lot of what people don't distinguish between the two and just call it a parameter.
People who have more than 15 years of experience have seen many call them parameters.
Parameter means a variable to which data is assigned in a function.
Consider the following code.
function sum($num,$num2){
}
In the code above I'm declaring a function called sum.
Looking at the function, $num and $num2 are the parameters.
Here is the argument:
function sum($num,$num2){
}
sum(5,10);
Looking at the code above, there is a partial sum(5,10) that calls a function. Passing 5 and 10. This value is called an argument.
Now, we learned about parameters and arguments.