PHP memory optimizations

[twQ]

Well, I was wondering how would I best optimize memory use? As in...

Would it be better to allow a script to end on it's own, as in <?php stuff ?> or once it's job is complete have die() at the end?

Should I unset the variables in this script:

<?php
$f = 4;
$b = 2;
$d = 1;
$n = $_GET['name'];

echo $f,$b,$d,$n;
?>

Or would it make a difference? That's not a real script of course just random stuff but it's an example.

Any memory tips are welcome!

Thanks,
Tim

[traq]

look here