embed php inside of link

hello all –

i wish to include a php function inside a link. but i notice the php wont “process” but rather the php function call is passed as a literal

https://www.myDomain.com/blah/blah/index.shtml?Parm=<?php echo get_option(‘admin_email’); ?>

rather than the admin_email being passed as a parm, the php literal call itself is being passed.

any ideas ??