A simple include script problem!

[gucci`]

OK - I have a small problem but it's bugging me out.

 

The little script I'm using is

 

<?php

if (@$a) {

    include "".$a.".inc";

} else {

    include "".main.".inc";

}

?>

 

First of all and I think I should ask these questions one at a time and get the answer for the fists one before asking the second.

Thats for my own benifit, so I don't get confused.

 

Question 1: In this script if the value for $a does not exist does the script then load main.php or does it only load main.php when the variable is not pass.

 

What I mean is this: http://www.sitename.com/index.php?a=nosuchfile

 

Does main.php load

 

OR

 

http://www.sitename.com/index.php

 

Only loads when the variable is not passed.

 

Or does it load for both cases.

 

Thanks