How do you add php code to an ez-page?

I wan't to put this:

PHP Code:
<?php

    
require_once("rsslib.php");

    
$url "http://simplefeed.consumerreports.org/rss/?f=96678890-01dc-11dc-3c7e-00001a1a9134";

    echo 
RSS_Display($url100);

?>
into my More Information ez-pages, but haven't found an answer by searching, so, thought I'd ask.