show some code to admins only

i want to add code to my footer but have it only appear for admins. i want a link to dashboard.

this code didn’t work. i tried a few variations. i obviously know little php! thanks for any help…

<?php global $current_user;
get_currentuserinfo();
?>

<?php if ( $current_user->ID == 10 ) { ?>
text that logged in admin users will see – like a link to dashboard
<?php } else { ?>
text for anyone
<?php } ?>