PHP's new input_filter does not read $_GET or $_POST arrays

Question

In PHP 5.2 there was a nice security function added called \"input_filter\", so instead of saying:

$name = $_GET[\'name\'];

you can now say

Answer 1

If you are manually changing the array, surely you don't need to sanatise it anyway? Why are you changing the arrays anyway, surely you want them to be an input, rather than something you've programmatically inserted.

Perhaps more code/context would be helpful.