Need help with some PHP

Hi

Im new to working with PHP so apologies if this sounds simple but im trying to pass variables through my site and it doesnt seem to be working.

Basically i have a form with a list and a submit button. The list is called 'choice' and the form links to a php page where the variable 'choice' should be displayed.

But when i choose my selection and then press submit my choice hasnt showed up.

The code i got which should display the choice is:

<?php echo $choice?>

im pretty sure this is right but its not working

any help much appreciated