How do I do this

I am trying to set up my template in wordpress but I need to make it so that the posts HTML code isn't entered the same as on the home page on the permalink page. I am trying to say only show this HTML code if the URL isn't for a permalink page. Here is a sample URL: http://mysite.com/2007/08/20/post-name/

Here is the code I am using:

<?php if (!preg_match("#^(/[.*]+/[.*]+/[.*]+/[.*]+/)$#", $_SERVER['REQUEST_URI'])) : ?>

// HTML code here

<?php endif; ?>

PHP:

Please help.

 

<?php
$_URL = $_SERVER['REQUEST_URI'];
if (substr($_URL,(strlen($_URL)-1),1)!="/")
echo "Not Permalink!";
// HTML code here
?>

PHP:

I don't know PHP so bare with me. I'm trying my best.

 

if (!preg_match('/20\d{2}\/[01][0-9]\/[0-3][0-9]\//', $_SERVER['REQUEST_URI']))

PHP:

This should do it.

 

Thanks a ton nico. It works perfectly.