How to hide some php code in single.php using pay-with-a-like plugin

Hi
is it possible to hide some php code in template file? using this code:

<?php
if ( function_exists( 'wpmudev_pwal_html' ) ) {
     $html = '<div>SOME PHP CODE</div>'; // html code to be protected (required)
     $id = 1; // An optional unique id if you are using the function more than once on a single page
     $description = 'video'; // Optional description of the protected content
     echo wpmudev_pwal_html( $html, $id, $description );
}
?>

How to hide some php code in file ???